Ali Shariat - Academia.edu (original) (raw)

Papers by Ali Shariat

Research paper thumbnail of Erector Spinae Plane (ESP) Block Decreases Narcotic Requirement in Patients Undergoing Subcutaneous ICD Placement Under Sedation

Introduction: Providing adequate analgesia during subcutaneous ICD implantation can be a challeng... more Introduction: Providing adequate analgesia during subcutaneous ICD implantation can be a challenge. The use of regional techniques such as erector spinae plane (ESP) block can provide both analgesia and attenuate the risk of opioid use especially in high-risk patient populations. Methods: This was a single center, prospective study of patients undergoing SICD implantation from February 2020 to February 2022. Patients were older than 18 years of age and randomly assigned to receive ESP block or traditional wound infiltration. The primary outcome was the overall use of perioperative analgesic medications in the ESP block versus the surgical wound infiltration group. Descriptive data are reported as count, mean, or median, as appropriate. For group comparisons, Fisher’s exact test was used for categorical variables; the student t-test was used for normally distributed continuous variables, and the Krustal-Wallis test was used for skewed continuous variables, as appropriate. Results: 24...

Research paper thumbnail of High turnover for ambulatory orthopedic surgery

Current Opinion in Anaesthesiology

Purpose of review The trend in the perioperative management of patients having orthopedic surgery... more Purpose of review The trend in the perioperative management of patients having orthopedic surgery in the ambulatory setting emphasizes time-efficiency and rapid turnovers. Anesthetic techniques and management continue to evolve to increase efficiency and decrease time spent in recovery. Recent findings Minimizing time patients spend in phase 1 recovery or bypassing phase 1 altogether, known as fast-tracking, has become an important goal in containing costs in high turnover, ambulatory settings. Anesthetic techniques, particularly implementation of regional anesthesia and multimodal analgesia, have evolved to maximize efficiency. Summary Anesthetic goals in the setting of high-turnover orthopedic surgery include effective multimodal analgesia, decreasing monotherapy with opioids, and patient education. Regional anesthesia as part of a multimodal analgesic regimen is increasingly used in ambulatory surgery fast-tracking protocols.

Research paper thumbnail of Regional Analgesia for Cardiac Surgery. Part 2: Peripheral Regional Analgesia for Cardiac Surgery

Seminars in Cardiothoracic and Vascular Anesthesia, 2021

The introduction of regional analgesia in the past decades have revolutionized postoperative pain... more The introduction of regional analgesia in the past decades have revolutionized postoperative pain management for various types of surgery, particularly orthopedic surgery. Nowadays, they are being constantly introduced into other types of surgeries including cardiac surgeries. Neuraxial and paravertebral plexus blocks for cardiac surgery are considered as deep blocks and have the risk of hematoma formation in the setting of anticoagulation associated with cardiac surgeries. Moreover, hemodynamic compromise resulting from sympathectomy in patients with limited cardiac reserve further limits the use of neuraxial techniques. A multitude of fascial plane blocks involving chest wall have been developed, which have been shown the potential to be included in the regional analgesia armamentarium for cardiac surgery. In myofascial plane blocks, the local anesthetic spreads passively and targets the intermediate and terminal branches of intercostal nerves. They are useful as important adjunct...

Research paper thumbnail of The Effect of Add-on Buprenorphine to Matrix Program in Reduction of Craving and Relapse Among People With Methamphetamine Use Disorder

Journal of Clinical Psychopharmacology, 2021

Background Methamphetamine addiction is a global issue. Buprenorphine might have beneficial roles... more Background Methamphetamine addiction is a global issue. Buprenorphine might have beneficial roles in reducing craving to methamphetamine use via altering neurotransmission signaling and dopaminergic system-related reward mechanisms. Procedures This clinical trial was performed in 2019 to 2020 in Khorshid Hospital, Isfahan, Iran. The study was conducted on patients with methamphetamine use disorder. The intervention group received sublingual buprenorphine for 8 weeks, and the other group also received placebo tablets. Patients were followed up and visited every month for the next 4 months. Both groups were treated simultaneously by matrix program for 2 months and observed for the next 4 months. Patients filled out the Cocaine Craving Questionnaire-Brief (CCQ-Brief) every week during intervention time (first 2 months) and every month during follow up visits (4 months). The Depression Anxiety Stress Scale (DASS-21) was also filled out before and after interventions for all of the patie...

Research paper thumbnail of Use of Serratus Anterior Plane and Transversus Thoracis Plane Blocks for Subcutaneous Implantable Cardioverter-Defibrillator (S-ICD) Implantation Decreases Intraoperative Opioid Requirements

Journal of Cardiothoracic and Vascular Anesthesia, 2021

OBJECTIVES The present study investigated whether regional anesthetic techniques, especially trun... more OBJECTIVES The present study investigated whether regional anesthetic techniques, especially truncal blocks, can provide adjunct anesthesia without the additional risk of general anesthesia and neuraxial techniques for subcutaneous implantable cardioverter-defibrillator (S-ICD) implantation. DESIGN Single-center, prospective, randomized study. SETTING Holding area and operating room at a single-center tertiary care hospital. PARTICIPANTS The study comprised 22 American Society of Anesthesiologists (ASA) physical status 3 or 4 patients with severe cardiac disease undergoing S-ICD implantation. INTERVENTIONS Patients received either a combination of serratus anterior plane block and transversus thoracis plane block or surgical infiltration of local anesthetics. MEASUREMENTS AND MAIN RESULTS Perioperative analgesic medication in the fascial plane block group versus the surgical wound infiltration group, visual analog pain scale score (0-10), intraoperative vital signs, total procedure time, and length of stay in the intensive care unit were measured. Total intraoperative fentanyl requirements (µg) were significantly less in the truncal block group versus the surgical infiltration group (45 [25-50] v 90 [50-100]; p = 0.026), and no patients had any adverse sequelae related to the study. Median intraoperative propofol use in the surgical infiltration group was 66.48 (47.30-73.73) µg/kg/min, and 65.95 (51.86-104.86) µg/kg/min for the truncal block group. This difference between the groups was not statistically significant (p = 0.293). CONCLUSIONS The performance of both the serratus anterior plane block and transversus thoracis plane blocks for S-ICD implantation are appropriate and may have the benefit of decreasing intraoperative opioid requirements.

Research paper thumbnail of An ICN-based publish-subscribe platform to deliver UAV service in smart cities

2016 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS), 2016

Intelligent Transportation Systems (ITS) play significant role in the management of traffic conge... more Intelligent Transportation Systems (ITS) play significant role in the management of traffic congestion in large cities. However, current ITS platforms are not suitable for real-time traffic control mainly due to the facts that 1) the contents are not rich enough to provide detailed information of current transportation network state, 2) there is no sophisticated notification system to alert the ITS platform about major issues in real-time. Unmanned Autonomous Vehicles (UAV) are promising candidates to provide rich content for traffic control systems in large cities and enable real-time notifications, especially when deployed on a platform that is content-oriented. This paper presents a sensor as a service platform to host live content streams (video, data) from a diverse set of input streams including UAVs, city cameras, loop detectors, etc., and to make the data available to a broad range of customers using a novel data dissemination layer. The data-dissemination layer is a content-oriented system based on information-centric networking, a new paradigm that puts content first, and which inherently enables content mobility and content security (through encryption on demand). To support real-time notification, we have implemented publish/subscribe overlay system based on the ICN paradigm. have also conducted live demos with UAVs providing live transportation video data in the system.

Research paper thumbnail of Successful Use of Serratus Plane Block as Primary Anesthetic for Video-Assisted Thoracoscopic Surgery (VATS)–Assisted Pleural Effusion Drainage

Journal of Cardiothoracic and Vascular Anesthesia, 2018

Research paper thumbnail of Serratus Anterior Plane Block for Transapical Off-Pump Mitral Valve Repair with Neochord Implantation

Journal of Cardiothoracic and Vascular Anesthesia, 2019

Research paper thumbnail of Regional Techniques for Cardiac and Cardiac-Related Procedures

Journal of Cardiothoracic and Vascular Anesthesia, 2018

The following review aims at providing a detailed summary of regional techniques suitable for car... more The following review aims at providing a detailed summary of regional techniques suitable for cardiac and cardiac related procedures, possible indications, and concerns and considerations. Cardiac surgery and postoperative pain Pain after cardiac surgery is similar to other postoperative pain, occurring as a direct result of surgical manipulation and trauma. Acute pain is most commonly related to the inflammatory response triggered by surgical incision, retraction, and suturing. Mediators of inflammation are local and systemic, including bradykinins, serotonin, prostaglandins, histamine, leukotrienes, and cytokines.(7) Pain is worst in the first few days following surgery and generally improves rapidly with tissue healing. Risk factors for severe acute postoperative pain after cardiac surgery mimic most other postoperative pain: younger patient age (< 60 years old), longer duration of surgery, and extent of surgery.(8) In most cases, postoperative pain resolves quickly, over days to weeks, and can be managed with oral opioid or non-opioid analgesics. However, for some patients, gastrointestinal, respiratory, or cognitive side effects may prohibit effective treatment options. Furthermore, a subset of patients go on to develop chronic postsurgical pain, defined by the International Association for the Study of Pain as postoperative pain lasting > 2 months and not explained by pre-existing pain or ongoing trauma.(9) Following sternotomy 30-50% of patients report chronic pain with 5-10% of that rated severe, as defined by >5/10 on a numerical rating scale (NRS).(10) Risk factors include emergent surgery, reoperation, depression, hypothyroidism, sternal healing, female gender, higher New York Heart Association (NYHA) classification, rib fractures, large chest circumference, pre-existing chronic pain, and persistent acute pain (NRS > 4 on third postoperative day) requiring opioid use.(11-13) While use of the internal thoracic artery for bypass grafting has been shown to be a risk factor in some studies, overall rates of non-anginal chronic postsurgical pain are similar in bypass and valve replacement surgeries,(14) suggesting the more common inciting factor of sternotomy and rib manipulation. However, development of chronic poststernotomy pain does not appear to correlate to wound healing, as CT findings of incomplete sternal union do not correlate with pain scores unless there is significant lack of ossification and dehiscence of

Research paper thumbnail of Successful popliteal and femoral nerve blocks in a patient with severe Guillain‐Barré syndrome

Anaesthesia Cases, 2016

SummaryWe report the successful use of peripheral nerve blocks for open reduction and internal fi... more SummaryWe report the successful use of peripheral nerve blocks for open reduction and internal fixation of a tri‐malleolar ankle fracture in a patient with Guillain‐Barré syndrome (GBS) with severe respiratory insufficiency and bulbar weakness. The patient had no adverse neurological sequelae. Peripheral nerve blocks can be safely administered and should be considered in patients with GBS who are at high risk for complications from general anaesthesia.

Research paper thumbnail of Successful Use of Serratus and Transversus Thoracic Plane Blocks for Subcutaneous Implantable Cardioverter-Defibrillator Placement

Journal of Cardiothoracic and Vascular Anesthesia, 2017

Research paper thumbnail of Sports medicine and hand surgery

Decision-Making in Orthopedic and Regional Anesthesiology

Research paper thumbnail of Implantation of the subcutaneous implantable cardioverter-defibrillator with retroperitoneal generator placement in a child with hypoplastic left heart syndrome

HeartRhythm Case Reports, 2015

Research paper thumbnail of Comparison of shear bond strength of resin-modified glass ionomer and composite resin to three pulp capping agents

Journal of dental research, dental clinics, dental prospects, 2013

Background and aims. Present study was designed to compare the bonding strength of resin-modified... more Background and aims. Present study was designed to compare the bonding strength of resin-modified glass ionomer (RMGI) and composite resin to mineral trioxide aggregate (MTA), MTA mixed with Na2HPO4 (NAMTA), and calcium-enriched mixture (CEM). Materials and methods. Thirty specimens of each CEM, NAMTA, and MTA were prepared. Composite and RMGI restorations were then placed on the samples (15 samples in six subgroups). Shear bond strength was assessed using universal testing machine. Data were analyzed with two-way ANOVA and post-hoc Tukey test. To compare the bond strength in subgroups, one-away ANOVA was applied. Significance level was set at P < 0.05. Results. Bond strength was significantly higher to composite samples compared to RMGI samples (p<0.001). The difference in bond strength of composite samples between MTA and CEM subgroups (P=0.026) as well as MTA and NAMTA subgroups (P= 0.019) was significant, but the difference between NAMTA and CEM subgroups (P=0.56) was not ...

Research paper thumbnail of Gas/Water IFT Measurements Using the Pendant Drop Method at HP/HT Conditions: The Selected Plane vs. Computerized Image Processing Methods

Proceedings of SPE Annual Technical Conference and Exhibition, 2012

This paper presents a comparative evaluation of gas-water interfacial tensions (IFT) measured usi... more This paper presents a comparative evaluation of gas-water interfacial tensions (IFT) measured using the pendant drop technique and computed using either the Selected Plane (SP) or the Computerized Image Processing (CIP) Methods at high- pressure/high-temperature (HP/HT) conditions. Both the SP and CIP Methods are based on solutions to the Young-Laplace equation. The SP Method, which is derived from an approximate solution originally developed by Bashforth and Adams (1883), is dependent on just two pendant droplet dimensions. Further, the solutions were generated for the air-water system at pressures and temperatures much lower than typically encountered in oil and natural gas reservoirs. However, these solutions are often extrapolated mathematically to HP/HT conditions. Although it is relatively simple to use, the IFT computational accuracy using the SP Method is questionable since it is dependent on the precision to which the two pendant droplet dimensions are measured. However, im...

Research paper thumbnail of A Laboratory Study of the Effects of Fluid Compositions on Gas-Water Interfacial Tension at HP/HT Reservoir Conditions

All Days, 2011

This paper presents the second phase of a comprehensive, three-year laboratory study designed to ... more This paper presents the second phase of a comprehensive, three-year laboratory study designed to measure gas-water interfacial tension (IFT) at high-pressure/high-temperature (i.e., HP/HT) reservoir conditions. The first phase of our laboratory study (Rushing, et al., 2008a) evaluated the effects of pressure and temperature as well as common nonhydrocarbon contaminants (i.e., CO2 and N2) in the gas phase on gas-water IFT for several dry gas mixtures with specific gas gravities ranging from 0.5781 to 0.7664. These gas mixtures contained primarily methane but also had small percentages of ethane and propane. Carbon dioxide or nitrogen concentrations ranged from 0, 5, 10 and 20 mole% each. All measurements were made with distilled water.The second phase of our study, which is presented in this paper, extends the work of Rushing, et al. (2008a) with the primary objective of evaluating the effects of gas phase hydrocarbon composition on gas-water IFTs at HP/HT reservoir conditions. Gas c...

Research paper thumbnail of Reply to Dr Murgatroyd et al

Regional Anesthesia and Pain Medicine, 2013

is inserted out-of-plane (OOP) lateral to the femoral nerve. Needle tip position is confirmed by ... more is inserted out-of-plane (OOP) lateral to the femoral nerve. Needle tip position is confirmed by local anesthetic spread under fascia iliaca. B, Longitudinal parasagittal view of the needle with its tip in position under fascia iliaca. Cephalad spread of local anesthetic between fascia iliaca and the iliopsoas muscle can be visualized in real time. Letters to the Editor Regional Anesthesia and Pain Medicine • Volume 38, Number 5, September-October 2013

Research paper thumbnail of Laboratory Measurements of CO2-H2O Interfacial Tension at HP/HT Conditions: Implications for CO2 Sequestration in Deep Aquifers

Carbon Management Technology Conference, 2012

... Principle physical mechanisms by which CO2 movement may be impeded or even halted in an aquif... more ... Principle physical mechanisms by which CO2 movement may be impeded or even halted in an aquifer include structural/stratigraphic; residual fluid; and hydrodynamic (Oloruntobi and LaForce, 2009; Larkin, 2010) trapping. ...

Research paper thumbnail of Robust QoS-guaranteed network engineering in interference-aware wireless networks

2013 Proceedings IEEE INFOCOM, 2013

ABSTRACT Due to the time-varying nature of wireless networks, it is required to find robust optim... more ABSTRACT Due to the time-varying nature of wireless networks, it is required to find robust optimal methods to control the behavior and performance of such networks; however, this is a challenging task since robustness metrics and QoS-based (Quality of service) constraints in a wireless environment are typically highly non-linear and non-convex. This paper explores the possibility of using graph theoretic metrics to provide robustness in a wireless network at the presence of a set of QoS constraints. In particular, we are interested in robust planning of a wireless network for a given demand matrix while preserving end-to-end delay for input demands below a given threshold set. To this end, we show that the upper bound of end-to-end round trip time between two nodes of a network can be approximated by point-to-point network criticality (or resistance distance) of the network. We construct a convex optimization problem to provide a delay-guaranteed jointly optimal allocation of transmit powers and link flows. We show that the solution provides a robust behavior, i.e. it is insensitive to the environmental changes such as wireless link disruption, this is expected because network criticality is a robustness metric. Our framework can be applied to a wide range of SINR (Signal to Interference plus Noise Ratio) values.

Research paper thumbnail of Block to Block Interaction Effect in Naturally Fractured Reservoirs

All Days, 2006

Initially, gravity drainage mechanism in naturally fractured reservoirs was modeled and validated... more Initially, gravity drainage mechanism in naturally fractured reservoirs was modeled and validated by solving the available analytical equations (e.g. Firoozabadi and Hauge method in 1990). Block to block interaction effect has been included in this model. Then the effects of different parameters on recovery process were investigated and compared with the production mechanism of different models, such as, dual porosity, dual permeability. This work determined that the most effective parameters on recovery process are block height and matrix permeability. Also in the case of capillary continuity between the blocks, vertical fracture permeability has no effect on recovery process. The main conclusion drawn from this work is that reinfiltration causes a reduction in the production rate; however, it has no effect on ultimate recovery. Also it was concluded that trickled oil from blocks above always prefers to reinfiltrate into the matrix blocks below rather than flowing through the fract...

Research paper thumbnail of Erector Spinae Plane (ESP) Block Decreases Narcotic Requirement in Patients Undergoing Subcutaneous ICD Placement Under Sedation

Introduction: Providing adequate analgesia during subcutaneous ICD implantation can be a challeng... more Introduction: Providing adequate analgesia during subcutaneous ICD implantation can be a challenge. The use of regional techniques such as erector spinae plane (ESP) block can provide both analgesia and attenuate the risk of opioid use especially in high-risk patient populations. Methods: This was a single center, prospective study of patients undergoing SICD implantation from February 2020 to February 2022. Patients were older than 18 years of age and randomly assigned to receive ESP block or traditional wound infiltration. The primary outcome was the overall use of perioperative analgesic medications in the ESP block versus the surgical wound infiltration group. Descriptive data are reported as count, mean, or median, as appropriate. For group comparisons, Fisher’s exact test was used for categorical variables; the student t-test was used for normally distributed continuous variables, and the Krustal-Wallis test was used for skewed continuous variables, as appropriate. Results: 24...

Research paper thumbnail of High turnover for ambulatory orthopedic surgery

Current Opinion in Anaesthesiology

Purpose of review The trend in the perioperative management of patients having orthopedic surgery... more Purpose of review The trend in the perioperative management of patients having orthopedic surgery in the ambulatory setting emphasizes time-efficiency and rapid turnovers. Anesthetic techniques and management continue to evolve to increase efficiency and decrease time spent in recovery. Recent findings Minimizing time patients spend in phase 1 recovery or bypassing phase 1 altogether, known as fast-tracking, has become an important goal in containing costs in high turnover, ambulatory settings. Anesthetic techniques, particularly implementation of regional anesthesia and multimodal analgesia, have evolved to maximize efficiency. Summary Anesthetic goals in the setting of high-turnover orthopedic surgery include effective multimodal analgesia, decreasing monotherapy with opioids, and patient education. Regional anesthesia as part of a multimodal analgesic regimen is increasingly used in ambulatory surgery fast-tracking protocols.

Research paper thumbnail of Regional Analgesia for Cardiac Surgery. Part 2: Peripheral Regional Analgesia for Cardiac Surgery

Seminars in Cardiothoracic and Vascular Anesthesia, 2021

The introduction of regional analgesia in the past decades have revolutionized postoperative pain... more The introduction of regional analgesia in the past decades have revolutionized postoperative pain management for various types of surgery, particularly orthopedic surgery. Nowadays, they are being constantly introduced into other types of surgeries including cardiac surgeries. Neuraxial and paravertebral plexus blocks for cardiac surgery are considered as deep blocks and have the risk of hematoma formation in the setting of anticoagulation associated with cardiac surgeries. Moreover, hemodynamic compromise resulting from sympathectomy in patients with limited cardiac reserve further limits the use of neuraxial techniques. A multitude of fascial plane blocks involving chest wall have been developed, which have been shown the potential to be included in the regional analgesia armamentarium for cardiac surgery. In myofascial plane blocks, the local anesthetic spreads passively and targets the intermediate and terminal branches of intercostal nerves. They are useful as important adjunct...

Research paper thumbnail of The Effect of Add-on Buprenorphine to Matrix Program in Reduction of Craving and Relapse Among People With Methamphetamine Use Disorder

Journal of Clinical Psychopharmacology, 2021

Background Methamphetamine addiction is a global issue. Buprenorphine might have beneficial roles... more Background Methamphetamine addiction is a global issue. Buprenorphine might have beneficial roles in reducing craving to methamphetamine use via altering neurotransmission signaling and dopaminergic system-related reward mechanisms. Procedures This clinical trial was performed in 2019 to 2020 in Khorshid Hospital, Isfahan, Iran. The study was conducted on patients with methamphetamine use disorder. The intervention group received sublingual buprenorphine for 8 weeks, and the other group also received placebo tablets. Patients were followed up and visited every month for the next 4 months. Both groups were treated simultaneously by matrix program for 2 months and observed for the next 4 months. Patients filled out the Cocaine Craving Questionnaire-Brief (CCQ-Brief) every week during intervention time (first 2 months) and every month during follow up visits (4 months). The Depression Anxiety Stress Scale (DASS-21) was also filled out before and after interventions for all of the patie...

Research paper thumbnail of Use of Serratus Anterior Plane and Transversus Thoracis Plane Blocks for Subcutaneous Implantable Cardioverter-Defibrillator (S-ICD) Implantation Decreases Intraoperative Opioid Requirements

Journal of Cardiothoracic and Vascular Anesthesia, 2021

OBJECTIVES The present study investigated whether regional anesthetic techniques, especially trun... more OBJECTIVES The present study investigated whether regional anesthetic techniques, especially truncal blocks, can provide adjunct anesthesia without the additional risk of general anesthesia and neuraxial techniques for subcutaneous implantable cardioverter-defibrillator (S-ICD) implantation. DESIGN Single-center, prospective, randomized study. SETTING Holding area and operating room at a single-center tertiary care hospital. PARTICIPANTS The study comprised 22 American Society of Anesthesiologists (ASA) physical status 3 or 4 patients with severe cardiac disease undergoing S-ICD implantation. INTERVENTIONS Patients received either a combination of serratus anterior plane block and transversus thoracis plane block or surgical infiltration of local anesthetics. MEASUREMENTS AND MAIN RESULTS Perioperative analgesic medication in the fascial plane block group versus the surgical wound infiltration group, visual analog pain scale score (0-10), intraoperative vital signs, total procedure time, and length of stay in the intensive care unit were measured. Total intraoperative fentanyl requirements (µg) were significantly less in the truncal block group versus the surgical infiltration group (45 [25-50] v 90 [50-100]; p = 0.026), and no patients had any adverse sequelae related to the study. Median intraoperative propofol use in the surgical infiltration group was 66.48 (47.30-73.73) µg/kg/min, and 65.95 (51.86-104.86) µg/kg/min for the truncal block group. This difference between the groups was not statistically significant (p = 0.293). CONCLUSIONS The performance of both the serratus anterior plane block and transversus thoracis plane blocks for S-ICD implantation are appropriate and may have the benefit of decreasing intraoperative opioid requirements.

Research paper thumbnail of An ICN-based publish-subscribe platform to deliver UAV service in smart cities

2016 IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS), 2016

Intelligent Transportation Systems (ITS) play significant role in the management of traffic conge... more Intelligent Transportation Systems (ITS) play significant role in the management of traffic congestion in large cities. However, current ITS platforms are not suitable for real-time traffic control mainly due to the facts that 1) the contents are not rich enough to provide detailed information of current transportation network state, 2) there is no sophisticated notification system to alert the ITS platform about major issues in real-time. Unmanned Autonomous Vehicles (UAV) are promising candidates to provide rich content for traffic control systems in large cities and enable real-time notifications, especially when deployed on a platform that is content-oriented. This paper presents a sensor as a service platform to host live content streams (video, data) from a diverse set of input streams including UAVs, city cameras, loop detectors, etc., and to make the data available to a broad range of customers using a novel data dissemination layer. The data-dissemination layer is a content-oriented system based on information-centric networking, a new paradigm that puts content first, and which inherently enables content mobility and content security (through encryption on demand). To support real-time notification, we have implemented publish/subscribe overlay system based on the ICN paradigm. have also conducted live demos with UAVs providing live transportation video data in the system.

Research paper thumbnail of Successful Use of Serratus Plane Block as Primary Anesthetic for Video-Assisted Thoracoscopic Surgery (VATS)–Assisted Pleural Effusion Drainage

Journal of Cardiothoracic and Vascular Anesthesia, 2018

Research paper thumbnail of Serratus Anterior Plane Block for Transapical Off-Pump Mitral Valve Repair with Neochord Implantation

Journal of Cardiothoracic and Vascular Anesthesia, 2019

Research paper thumbnail of Regional Techniques for Cardiac and Cardiac-Related Procedures

Journal of Cardiothoracic and Vascular Anesthesia, 2018

The following review aims at providing a detailed summary of regional techniques suitable for car... more The following review aims at providing a detailed summary of regional techniques suitable for cardiac and cardiac related procedures, possible indications, and concerns and considerations. Cardiac surgery and postoperative pain Pain after cardiac surgery is similar to other postoperative pain, occurring as a direct result of surgical manipulation and trauma. Acute pain is most commonly related to the inflammatory response triggered by surgical incision, retraction, and suturing. Mediators of inflammation are local and systemic, including bradykinins, serotonin, prostaglandins, histamine, leukotrienes, and cytokines.(7) Pain is worst in the first few days following surgery and generally improves rapidly with tissue healing. Risk factors for severe acute postoperative pain after cardiac surgery mimic most other postoperative pain: younger patient age (< 60 years old), longer duration of surgery, and extent of surgery.(8) In most cases, postoperative pain resolves quickly, over days to weeks, and can be managed with oral opioid or non-opioid analgesics. However, for some patients, gastrointestinal, respiratory, or cognitive side effects may prohibit effective treatment options. Furthermore, a subset of patients go on to develop chronic postsurgical pain, defined by the International Association for the Study of Pain as postoperative pain lasting > 2 months and not explained by pre-existing pain or ongoing trauma.(9) Following sternotomy 30-50% of patients report chronic pain with 5-10% of that rated severe, as defined by >5/10 on a numerical rating scale (NRS).(10) Risk factors include emergent surgery, reoperation, depression, hypothyroidism, sternal healing, female gender, higher New York Heart Association (NYHA) classification, rib fractures, large chest circumference, pre-existing chronic pain, and persistent acute pain (NRS > 4 on third postoperative day) requiring opioid use.(11-13) While use of the internal thoracic artery for bypass grafting has been shown to be a risk factor in some studies, overall rates of non-anginal chronic postsurgical pain are similar in bypass and valve replacement surgeries,(14) suggesting the more common inciting factor of sternotomy and rib manipulation. However, development of chronic poststernotomy pain does not appear to correlate to wound healing, as CT findings of incomplete sternal union do not correlate with pain scores unless there is significant lack of ossification and dehiscence of

Research paper thumbnail of Successful popliteal and femoral nerve blocks in a patient with severe Guillain‐Barré syndrome

Anaesthesia Cases, 2016

SummaryWe report the successful use of peripheral nerve blocks for open reduction and internal fi... more SummaryWe report the successful use of peripheral nerve blocks for open reduction and internal fixation of a tri‐malleolar ankle fracture in a patient with Guillain‐Barré syndrome (GBS) with severe respiratory insufficiency and bulbar weakness. The patient had no adverse neurological sequelae. Peripheral nerve blocks can be safely administered and should be considered in patients with GBS who are at high risk for complications from general anaesthesia.

Research paper thumbnail of Successful Use of Serratus and Transversus Thoracic Plane Blocks for Subcutaneous Implantable Cardioverter-Defibrillator Placement

Journal of Cardiothoracic and Vascular Anesthesia, 2017

Research paper thumbnail of Sports medicine and hand surgery

Decision-Making in Orthopedic and Regional Anesthesiology

Research paper thumbnail of Implantation of the subcutaneous implantable cardioverter-defibrillator with retroperitoneal generator placement in a child with hypoplastic left heart syndrome

HeartRhythm Case Reports, 2015

Research paper thumbnail of Comparison of shear bond strength of resin-modified glass ionomer and composite resin to three pulp capping agents

Journal of dental research, dental clinics, dental prospects, 2013

Background and aims. Present study was designed to compare the bonding strength of resin-modified... more Background and aims. Present study was designed to compare the bonding strength of resin-modified glass ionomer (RMGI) and composite resin to mineral trioxide aggregate (MTA), MTA mixed with Na2HPO4 (NAMTA), and calcium-enriched mixture (CEM). Materials and methods. Thirty specimens of each CEM, NAMTA, and MTA were prepared. Composite and RMGI restorations were then placed on the samples (15 samples in six subgroups). Shear bond strength was assessed using universal testing machine. Data were analyzed with two-way ANOVA and post-hoc Tukey test. To compare the bond strength in subgroups, one-away ANOVA was applied. Significance level was set at P < 0.05. Results. Bond strength was significantly higher to composite samples compared to RMGI samples (p<0.001). The difference in bond strength of composite samples between MTA and CEM subgroups (P=0.026) as well as MTA and NAMTA subgroups (P= 0.019) was significant, but the difference between NAMTA and CEM subgroups (P=0.56) was not ...

Research paper thumbnail of Gas/Water IFT Measurements Using the Pendant Drop Method at HP/HT Conditions: The Selected Plane vs. Computerized Image Processing Methods

Proceedings of SPE Annual Technical Conference and Exhibition, 2012

This paper presents a comparative evaluation of gas-water interfacial tensions (IFT) measured usi... more This paper presents a comparative evaluation of gas-water interfacial tensions (IFT) measured using the pendant drop technique and computed using either the Selected Plane (SP) or the Computerized Image Processing (CIP) Methods at high- pressure/high-temperature (HP/HT) conditions. Both the SP and CIP Methods are based on solutions to the Young-Laplace equation. The SP Method, which is derived from an approximate solution originally developed by Bashforth and Adams (1883), is dependent on just two pendant droplet dimensions. Further, the solutions were generated for the air-water system at pressures and temperatures much lower than typically encountered in oil and natural gas reservoirs. However, these solutions are often extrapolated mathematically to HP/HT conditions. Although it is relatively simple to use, the IFT computational accuracy using the SP Method is questionable since it is dependent on the precision to which the two pendant droplet dimensions are measured. However, im...

Research paper thumbnail of A Laboratory Study of the Effects of Fluid Compositions on Gas-Water Interfacial Tension at HP/HT Reservoir Conditions

All Days, 2011

This paper presents the second phase of a comprehensive, three-year laboratory study designed to ... more This paper presents the second phase of a comprehensive, three-year laboratory study designed to measure gas-water interfacial tension (IFT) at high-pressure/high-temperature (i.e., HP/HT) reservoir conditions. The first phase of our laboratory study (Rushing, et al., 2008a) evaluated the effects of pressure and temperature as well as common nonhydrocarbon contaminants (i.e., CO2 and N2) in the gas phase on gas-water IFT for several dry gas mixtures with specific gas gravities ranging from 0.5781 to 0.7664. These gas mixtures contained primarily methane but also had small percentages of ethane and propane. Carbon dioxide or nitrogen concentrations ranged from 0, 5, 10 and 20 mole% each. All measurements were made with distilled water.The second phase of our study, which is presented in this paper, extends the work of Rushing, et al. (2008a) with the primary objective of evaluating the effects of gas phase hydrocarbon composition on gas-water IFTs at HP/HT reservoir conditions. Gas c...

Research paper thumbnail of Reply to Dr Murgatroyd et al

Regional Anesthesia and Pain Medicine, 2013

is inserted out-of-plane (OOP) lateral to the femoral nerve. Needle tip position is confirmed by ... more is inserted out-of-plane (OOP) lateral to the femoral nerve. Needle tip position is confirmed by local anesthetic spread under fascia iliaca. B, Longitudinal parasagittal view of the needle with its tip in position under fascia iliaca. Cephalad spread of local anesthetic between fascia iliaca and the iliopsoas muscle can be visualized in real time. Letters to the Editor Regional Anesthesia and Pain Medicine • Volume 38, Number 5, September-October 2013

Research paper thumbnail of Laboratory Measurements of CO2-H2O Interfacial Tension at HP/HT Conditions: Implications for CO2 Sequestration in Deep Aquifers

Carbon Management Technology Conference, 2012

... Principle physical mechanisms by which CO2 movement may be impeded or even halted in an aquif... more ... Principle physical mechanisms by which CO2 movement may be impeded or even halted in an aquifer include structural/stratigraphic; residual fluid; and hydrodynamic (Oloruntobi and LaForce, 2009; Larkin, 2010) trapping. ...

Research paper thumbnail of Robust QoS-guaranteed network engineering in interference-aware wireless networks

2013 Proceedings IEEE INFOCOM, 2013

ABSTRACT Due to the time-varying nature of wireless networks, it is required to find robust optim... more ABSTRACT Due to the time-varying nature of wireless networks, it is required to find robust optimal methods to control the behavior and performance of such networks; however, this is a challenging task since robustness metrics and QoS-based (Quality of service) constraints in a wireless environment are typically highly non-linear and non-convex. This paper explores the possibility of using graph theoretic metrics to provide robustness in a wireless network at the presence of a set of QoS constraints. In particular, we are interested in robust planning of a wireless network for a given demand matrix while preserving end-to-end delay for input demands below a given threshold set. To this end, we show that the upper bound of end-to-end round trip time between two nodes of a network can be approximated by point-to-point network criticality (or resistance distance) of the network. We construct a convex optimization problem to provide a delay-guaranteed jointly optimal allocation of transmit powers and link flows. We show that the solution provides a robust behavior, i.e. it is insensitive to the environmental changes such as wireless link disruption, this is expected because network criticality is a robustness metric. Our framework can be applied to a wide range of SINR (Signal to Interference plus Noise Ratio) values.

Research paper thumbnail of Block to Block Interaction Effect in Naturally Fractured Reservoirs

All Days, 2006

Initially, gravity drainage mechanism in naturally fractured reservoirs was modeled and validated... more Initially, gravity drainage mechanism in naturally fractured reservoirs was modeled and validated by solving the available analytical equations (e.g. Firoozabadi and Hauge method in 1990). Block to block interaction effect has been included in this model. Then the effects of different parameters on recovery process were investigated and compared with the production mechanism of different models, such as, dual porosity, dual permeability. This work determined that the most effective parameters on recovery process are block height and matrix permeability. Also in the case of capillary continuity between the blocks, vertical fracture permeability has no effect on recovery process. The main conclusion drawn from this work is that reinfiltration causes a reduction in the production rate; however, it has no effect on ultimate recovery. Also it was concluded that trickled oil from blocks above always prefers to reinfiltrate into the matrix blocks below rather than flowing through the fract...