Role of the Truview EVO2 laryngoscope in the airway management of elective surgical patients: A comparison with the Macintosh laryngoscope (original) (raw)
Related papers
Journal of Anaesthesiology Clinical Pharmacology, 2011
Background: Background: The Truview EVO2 TM laryngoscope is a recently introduced device with a unique blade that provides a magnified laryngeal view at 42° anterior reflected view. It facilitates visualization of the glottis without alignment of oral, pharyngeal, and tracheal axes. We compared the view obtained at laryngoscopy, intubating conditions and hemodynamic parameters of Truview with Macintosh blade. Materials and Methods: Materials and Methods: In prospective, randomized and controlled manner, 200 patients of ASA I and II of either sex (20-50 years), presenting for surgery requiring tracheal intubation, were assigned to undergo intubation using a Truview or Macintosh laryngoscope. Visualization of the vocal cord, ease of intubation, time taken for intubation, number of attempts, and hemodynamic parameters were evaluated. Results: Results: Truview provided better results for the laryngeal view using Cormack and Lehane grading, particularly in patients with higher airway Mallampati grading (P < 0.05). The time taken for intubation (33.06 ± 5.6 vs. 23.11 ± 57 seconds) was more with Truview than with Macintosh blade (P < 0.01). The Percentage of Glottic Opening (POGO) score was significantly higher (97.26 ± 8) in Truview as that observed with Macintosh blade (83.70 ± 21.5). Hemodynamic parameters increased after tracheal intubation from pre-intubation value (P < 0.05) in both the groups, but they were comparable amongst the groups. No postoperative adverse events were noted. Conclusion: Conclusion: Tracheal intubation using Truview blade provided consistently improved laryngeal view as compared to Macintosh blade without the need to align the oral, pharyngeal and tracheal axes, with equal attempts for successful intubation and similar changes in hemodynamics. However, the time taken for intubation was more with Truview.
Saudi Journal of Anaesthesia, 2013
Background: The Truview EVO2 blade facilitates the view of vocal cords by indirect laryngoscopy and does not require the proper alignment of the oral, pharyngeal and tracheal axes as with the Macintosh blade. Methods: In a crossover fashion, we prospectively compared the view obtained at laryngoscopy with Truview EVO2 and the Macintosh blade in 110 adult patients of either sex between the age of 18 and 60 years, who were scheduled to undergo general anesthesia with endotracheal intubation. The patients were intubated with the second laryngoscope. The preoperative airway variables, laryngoscopic view, difficulty of intubation scale (IDS) score, duration of intubation, and degree of difficulty percentage of glottic opening (POGO score) of use with each laryngoscope were compared. Results: The IDS score was low and comparable between the two laryngoscopes. The laryngeal view was easy; Modified Cormack Lehane (MCL) grade 2a or less in 98.14% of the cases with the Truview laryngoscope compared to 78.7% of the cases with the Macintosh laryngoscope. Nineteen patients of MCL grade 3, one patient of grade 2b, and seven patients of grade 2a view with the Macintosh laryngoscope had MCL grade 1 view with the Truview laryngoscope. The duration of intubation was comparable between Truview and Macintosh laryngoscopes (12.1±3.8 s vs. 10.9±2.1 s). Conclusion: Truview laryngoscope performed comparably to Macintosh laryngoscope in patients with normal airway; however, the Truview laryngoscope may be a better option in difficult airway situations when the Macintosh blade fails to show the glottic opening.
Journal of Experimental and Clinical Medicine, 2011
This study aims to compare Macintosh laryngoscope and Truview EVO2 video-laryngoscope with respect to the quality of glottic image, the success rate of intubation and their impact on the duration of intubation, hemodynamic responses and also related complications in patients with expected difficult intubation according to the Mallampati scoring system. Sixty patients in ASA I-II group ranging from 18-65 years of age were included in the study. Patients were randomly divided into two groups of 30 cases as group M (the group intubated with Macintosh laryngoscope) and Group V (the group intubated with Truview EVO2 video-laryngoscope). C-L (Cormack-Lehanne) score detected during intubation, duration of intubation, neck extansion needs, the success of intubation, complications, and antihypertensive requirement were recorded. Preoperatively, before induction, after induction, immediately after intubation, after intubation, 1st, 2nd, 3rd, 4th and 5 minute heart rate, systolic artesial pressure, diastolic arterial pressure, mean arterial pressure, peripheral oxygen saturation were recorded. There was a significant difference between both groups as for the quality of glottic images obtained. C-L III score was rated for 1 patient in Group M, and 10 patients in Group V (p<0.05). Duration of intubation was 23 secs in Group M, and 42 secs in Group V, respectively (p<0.05). During intubation neck extension was significantly higher in Group M (p<0.05). Bleeding complication was observed in one patient's mouth during intubation in Group M while no complications were observed in Group V (p>0.05). Number of attempts of intubation, hemodynamic parameters and need for antihypertensive showed no significant difference between the two groups (p>0.05). Truview EVO2 video-laryngoscope may be preferred to Macintosh blade laryngoscope because of better glottic and orafaringeal image acquisition in patients expected with difficult intubation and providing successful intubation in patients with contraindicated neck extension.
British Journal of Anaesthesia, 2009
Background. The Pentax Airwayscope w , the Glidescope w , and the Truview EVO2 w constitute three novel laryngoscopes that facilitate visualization of the vocal cords without alignment of the oral, pharyngeal, and tracheal axes. We compared these devices with the Macintosh laryngoscope in a simulated easy and difficult laryngoscopy. Methods. Thirty-five experienced anaesthetists were allowed up to three attempts to intubate in each of four laryngoscopy scenarios in a Laerdal w SimMan w manikin. The time required to perform tracheal intubation, the success rate, number of intubation attempts and of optimization manoeuvres, and the severity of dental compression were recorded. Results. In the simulated easy laryngoscopy scenarios, there was no difference between the study devices and the Macintosh in success of tracheal intubation. In more difficult tracheal intubation scenarios, the Glidescope w and Pentax AWS w , and to a lesser extent the Truview EVO2 w laryngoscope demonstrated advantages over the Macintosh laryngoscope including a better view of the glottis, greater success of tracheal intubation, and ease of device use. The Pentax AWS w was more successful in achieving tracheal intubation, required less time to successfully perform tracheal intubation, caused less dental trauma, and was considered by the anaesthetists to be easier to use. Conclusions. The Pentax AWS w laryngoscope demonstrated more advantages over the Macintosh laryngoscope than either the Truview EVO2 w or the Glidescope w laryngoscope, when used by experienced anaesthetists in difficult tracheal intubation scenarios.
Evaluation of the Truview™ EVO2 laryngoscope for nasotracheal intubation
Saudi Journal of Anaesthesia, 2012
Background: the truview™ EVo2 laryngoscope, with its unique optical lens system and blade tip angulation, has proved its usefulness in providing adequate laryngeal exposure and intubation via the oral route. However, the same has not been evaluated for nasotracheal intubation. Aim: We evaluated the suitability of the truview™ EVo2 laryngoscope for nasotracheal intubation. Methods: Fifty aSa grade i and ii elective surgical patients were studied. Patients aged below 15 years or having difficult airway were excluded. Under standard anesthesia protocol, nasotracheal intubation was performed using a truview™ EVo2 laryngoscope and, in cases of inability to complete intubation in three attempts, the Macintosh laryngoscope was used. time taken for intubation, use of Magill's forceps and need for optimization maneuvers were noted. the primary outcome was percentage of successful intubation, while hemodynamic changes and duration of intubation were taken as secondary outcomes. Results: Majority (94%) could be intubated successfully with the truview™ EVo2 laryngoscope. average time taken for intubation was 50.1 s. the hemodynamic changes were not clinically significant. Regression analysis revealed lack of association between duration of intubation and hemodynamic changes. there were no serious complications. Conclusion: the truview™ EVo2 laryngoscope is a useful tool in performing nasotracheal intubation, ensuring a high level of success rate among patients with normal airway anatomy.
EJCMM, 2023
Background: The essence of anaesthesia practice in every case is uneventful laryngoscopy and intubation. The current study compared the King Vision Video Laryngoscope (KVVL) channelled blade to the Macintosh laryngoscope (ML) in terms of laryngoscopic view, laryngoscopic time, and time required to complete tracheal intubation with the head in neutral position. We aimed to see if there were any drawbacks to using the King Vision Video Laryngoscope in routine clinical practice in terms of hemodynamics. Methods: Eighty patients undergoing elective surgery requiring general anaesthesia and tracheal intubation were randomly assigned to receive either the King Vision Video Laryngoscope or the Macintosh laryngoscope for tracheal intubation. Data were collected during and after laryngoscopy and endotracheal intubation which included laryngoscopic view, time and side effects after a standardised general anaesthetic. Results: The average tracheal intubation time (TTI) for the King Vision Video Laryngoscope and the Macintosh laryngoscope were 24.9 and 26.5 seconds, respectively (p =0.596). The mean duration of laryngoscopy (DOL) for the King Vision Video Laryngoscope and the Macintosh laryngoscope was 46.5 and 46.4 seconds, respectively (p = 0.925). Only 37.5% of the ML group had a Cormack Lehane grade 1 glottic view, whereas all of the KVVL group had a grade 1 glottic view. For KVVL and ML, the percentages of patients who did not require optimisation manoeuvres were 72.5% and 27.5%, respectively. Both groups experienced comparable changes in hemodynamic profile. Conclusion: The King Vision Video Laryngoscope has comparable efficacy in terms of intubation time, laryngoscopy duration, success rate, and ease of intubation. Although King Vision provided a higher percentage of the best laryngoscopic view with fewer optimization manoeuvres eventhough without statistical significance, it provides no additional benefit in European Journal of Molecular & Clinical Medicine ISSN 2515-8260 Volume 09, Issue 07, 2022 9648 terms of hemodynamic response to intubation. The need for a sniffing position is not needed in KVVL group. As a result, we conclude that the King Vision Video Laryngoscope can be used for tracheal intubation in routine clinical practice.
Journal of Evolution of Medical and Dental Sciences, 2016
BACKGROUND The laryngoscopic manoeuvre by Macintosh laryngoscope (M) causes maximum movement of the cervical spine which may be hazardous in patients with suspected/confirmed cervical spine injury carrying risk of neurological deterioration. The Truview PCD laryngoscope (T) is a modified laryngoscope blade which provides a good vision of the larynx in patients with limited neck extension. AIMS The present study was planned to determine whether Truview Laryngoscope can be used routinely for endotracheal intubation in place of Macintosh Laryngoscope in patients with normal distribution of airway characteristics in cervical in-line position. MATERIAL AND METHOD The study was conducted in 174 patients of age group of 18-60 years of either sex, of ASA I and II scheduled for elective surgery under general anaesthesia. The patients were randomly divided in two groups, i.e. group M and group T according to laryngoscope used. Intubation was performed in cervical in-line position, laryngoscopic view using Cormack and Lehane grading and subjective intubation difficulty score (IDS) was recorded. RESULTS The Truview laryngoscope provides a better laryngoscopic view as suggested by improved Cormack and Lehane grading. Intubation difficulty score was lower in Truview (1.56±0.69) as compared to Macintosh (3.14±0.95). CONCLUSION In view of better Cormack and Lehane grading and less intubation difficulty score, Truview is a better option for intubation in cervical in-line position.
IP innovative publication pvt. ltd, 2019
Introduction: Failure to secure the airway can lead to adverse cardiopulmonary events, brain damage or even anaesthetic death. The advent of various optical or video laryngoscopes have brought about a revolution in airway management. Truview PCD TM laryngoscope is a recently introduced device with a unique blade and prismatic lens which without external manipulation makes visualization of laryngeal inlet much easier. We have therefore compared glottic visualization haemodynamic response and ease of intubation between Truview PCD TM , McCoy and Macintosh laryngoscope blades. Material and Methods: Patients were randomly allocated into three groups of 40 each. Group I-Truview PCD TM laryngoscope, group II-McCoy laryngoscope and group III-Macintosh laryngoscope group. After induction patients were intubated with appropriate blade according to the group allocated. Visualization of laryngeal inlet was graded using Modified Cormack and lehane. Ease of intubation was also graded and hemodynamic parameters were noted on following occasions. Baseline (T1), before induction (T2), after induction (T3), immediately after intubation (T4), 1 min, 3 min and 5 min after intubation (T5,T6 and T7 respectively).
Anesthesiology Research and Practice, 2011
Background and Objective. The Airtraq laryngoscope (Prodol Meditec, Vizcaya, Spain) is a novel tracheal intubation device. Studies, performed until now, have compared the Airtraq with the Macintosh laryngoscope, concluding that it reduces the intubation times and increase the success rate at first intubation attempt, decreasing the Cormack-Lehane score. The aim of the study was to evaluate if, in unskillful anesthesiology residents during the laryngoscopy, the Airtraq compared with the Macintosh laryngoscope improves the laryngeal view, decreasing the Cormack-Lehane score.Methods. A prospective, randomized, crossed-over trial was carried out on 60 patients. Each one of the patients were intubated using both devices by unskillful (less than two hundred intubations with the Macintosh laryngoscope and 10 intubations using the Airtraq) anesthesiology residents. The Cormack-Lehane score, the success rate at first intubation attempt, and the laryngoscopy and intubation times were compared...
Open Access Macedonian Journal of Medical Sciences, 2021
BACKGROUND: Management of the airway in patients undergoing surgery is increasingly difficult. The airway management in the operating room in terms of the initial action of anesthesia is very important. Video-laryngoscopy has been shown to provide a better view of the larynx’s structure compared to direct visualization. AIM: We describe our experience using a custom made and inexpensive tool for a video-laryngoscopy. METHODS: This is an experimental research with single randomized clinical trial conducted at the Anesthesiology Department of Sanglah General Hospital Denpasar. There were 270 patients divides into three group with conventional, O-Mac® and Mc-GRATH™ BF laryngoscope, aged 18–65 years old, with Mallampati grade 1–2, randomly selected, and signed informed consent. RESULTS: Intubation time fastest with O-Mac® median 26 (15–36) s, p = 0.000. Laryngoscopy time fastest with O-Mac® median 5.5 (2–13 s), p = 0.000. O-Mac® does not use many tools, p = 0.000. All three did not prod...