Dr. Alejandro Moreira Grecco - Academia.edu (original) (raw)

Uploads

Papers by Dr. Alejandro Moreira Grecco

Rev Argent Coloproctologia, 2011

Fluorescence Imaging for Surgeons, 2015

The use of a multimodal optical system that expands the surgeon’s light spectrum of view can impr... more The use of a multimodal optical system that expands the surgeon’s light spectrum of view can improve surgical performance making structures clearly visible during laparoscopic and open surgery. This allows for shorter procedural duration and improved prevention and incidence of ureteral injury associated with complex pelvic surgery. Optical imaging using invisible NIR fluorescent light has several advantages over currently available intraoperative techniques. First, visualization of the ureters does not require ionizing radiation, and uses only safe wavelengths of light for ample excitation. Secondly, because fluorescence emission is invisible to the human eye, the surgical field is not stained or changed in any way. The blue dyes that are currently used stain the surgical field and have relatively poor contrast. Thirdly, imaging can be performed in real-time (up to 15 frames per second) with the merged image from the color video and NIR fluorescent cameras providing anatomical landmarks that are easily identifiable. More work is needed to identify the optimal contrast agent and light wavelength with which it is most optimally visualized. Overall, this field of knowledge is of great interest and reports a great growing potential.

Rev. argent. coloproctología, 2009

Resumo: Introducción: Las macroligaduras son una variante de las ligaduras elásticas tradicionale... more Resumo: Introducción: Las macroligaduras son una variante de las ligaduras elásticas tradicionales para hemorroides. El objetivo de este estudio es evaluar los resultados a corto y largo plazo de esta técnica. Pacientes y Métodos: Pacientes con hemorroides internas ...

Prensa méd. …, 2007

Base de dados : LILACS. Pesquisa : 503978 [Identificador único]. Referências encontradas : 1 [ref... more Base de dados : LILACS. Pesquisa : 503978 [Identificador único]. Referências encontradas : 1 [refinar]. Mostrando: 1 .. 1 no formato [Detalhado]. página 1 de 1, 1 / 1, LILACS, seleciona. para imprimir. Fotocópia. experimental, Documentos relacionados. Id: 503978. ...

Introduction: Endometriosis is a clinical entity characterized by the presence of endometrial tis... more Introduction: Endometriosis is a clinical entity characterized by the presence of endometrial tissue from the endometrium, with the rectocolonic condition being the most aggressive.Objectives: To evaluate the feasibility of colorectal resections, a complex pathology that must be addressed in a multidisciplinary way, and to report the results obtained from more than 10 years of work.Design: single group retrospective.Material and methods: Descriptive and retrospective study of case series, in a period between 2005 and early 2017. 29 patients were evaluated. The evaluation was carried out in a multidisciplinary way.Results: We have operated 171 deep endometriosis, the mean age 34.04 years. 29 required resections of the colon, in 27 a previous resection was performed with colorectal anastomosis and 2 sigmoidectomies. The anastomoses were with mechanical suturing, 17 colorectal terminations and 12 lateral terminations. Twenty-eight anastomoses were performed between 7 and 5 cm from the ...

Background: Anastomotic leak (AL) is one of the most feared complication of colorectal surgery. I... more Background: Anastomotic leak (AL) is one of the most feared complication of colorectal surgery. Its development is dependent of patient and surgery factors. Of these, bowel perfusion is one of the most important. Fluorescent angiography (FA) allows the identification in real time of the bowel perfusion.Objective: to describe the experience in the use of FA during colorectal surgery in a University Hospital setting in Buenos Aires, to register the change in surgical plan according to the FA findings and record the incidence of AL.Material y methods: Between January 2016 and June 2018, 37 patients with scheduled colorectal resections and FA bowel perfusion assessment were included.Results: Perfusion assessment with FA was possible in all cases with an extra operative time of 3 to 9 minutes, a change in surgical plan was registered in 4 cases (10.81%) and 2 AL were recorded (5.41%).Conclusions: FA during colorectal surgery is feasible, with minimum extra operative time and results in a...

Introduction: Endometriosis is a clinical entity characterized by the presence of endometrial tis... more Introduction: Endometriosis is a clinical entity characterized by the presence of endometrial tissue outside the endometrium, being the most aggressive rectocolonic condition. Design: Descriptive, retrospective case series study. Objective: Evaluate the feasibility of colorectal resections in this complex pathology that must be approached in a multidisciplinary way and report the results obtained from more than 10 years of work. Material and methods: In the period between 2005 and early 2017, 29 patients were evaluated in a multidisciplinary way. Results: One hundred and seventy-one patients were operated on for deep endometriosis, mean age 34 years. Twentynine patients required colon resection, 27 anterior resection and 2 sigmoidectomies. Seventeen end-to-end and 12 endtoside stapled anastomoses were performed. Twenty-eight anastomoses were performed between 7 and 5 cm from the anal margin and one at 4 cm. In the latter, a protective transverse colostomy was made. The mean operativ...

Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a therapeutic option for patients wit... more Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a therapeutic option for patients with unresectable peritoneal carcinomatosis. The steps and the surgical technique of the PIPAC technique are thoroughly described.

Journal of Coloproctology, Oct 1, 2017

Rev Argent Coloproctologia, 2011

Fluorescence Imaging for Surgeons, 2015

The use of a multimodal optical system that expands the surgeon’s light spectrum of view can impr... more The use of a multimodal optical system that expands the surgeon’s light spectrum of view can improve surgical performance making structures clearly visible during laparoscopic and open surgery. This allows for shorter procedural duration and improved prevention and incidence of ureteral injury associated with complex pelvic surgery. Optical imaging using invisible NIR fluorescent light has several advantages over currently available intraoperative techniques. First, visualization of the ureters does not require ionizing radiation, and uses only safe wavelengths of light for ample excitation. Secondly, because fluorescence emission is invisible to the human eye, the surgical field is not stained or changed in any way. The blue dyes that are currently used stain the surgical field and have relatively poor contrast. Thirdly, imaging can be performed in real-time (up to 15 frames per second) with the merged image from the color video and NIR fluorescent cameras providing anatomical landmarks that are easily identifiable. More work is needed to identify the optimal contrast agent and light wavelength with which it is most optimally visualized. Overall, this field of knowledge is of great interest and reports a great growing potential.

Rev. argent. coloproctología, 2009

Resumo: Introducción: Las macroligaduras son una variante de las ligaduras elásticas tradicionale... more Resumo: Introducción: Las macroligaduras son una variante de las ligaduras elásticas tradicionales para hemorroides. El objetivo de este estudio es evaluar los resultados a corto y largo plazo de esta técnica. Pacientes y Métodos: Pacientes con hemorroides internas ...

Prensa méd. …, 2007

Base de dados : LILACS. Pesquisa : 503978 [Identificador único]. Referências encontradas : 1 [ref... more Base de dados : LILACS. Pesquisa : 503978 [Identificador único]. Referências encontradas : 1 [refinar]. Mostrando: 1 .. 1 no formato [Detalhado]. página 1 de 1, 1 / 1, LILACS, seleciona. para imprimir. Fotocópia. experimental, Documentos relacionados. Id: 503978. ...

Introduction: Endometriosis is a clinical entity characterized by the presence of endometrial tis... more Introduction: Endometriosis is a clinical entity characterized by the presence of endometrial tissue from the endometrium, with the rectocolonic condition being the most aggressive.Objectives: To evaluate the feasibility of colorectal resections, a complex pathology that must be addressed in a multidisciplinary way, and to report the results obtained from more than 10 years of work.Design: single group retrospective.Material and methods: Descriptive and retrospective study of case series, in a period between 2005 and early 2017. 29 patients were evaluated. The evaluation was carried out in a multidisciplinary way.Results: We have operated 171 deep endometriosis, the mean age 34.04 years. 29 required resections of the colon, in 27 a previous resection was performed with colorectal anastomosis and 2 sigmoidectomies. The anastomoses were with mechanical suturing, 17 colorectal terminations and 12 lateral terminations. Twenty-eight anastomoses were performed between 7 and 5 cm from the ...

Background: Anastomotic leak (AL) is one of the most feared complication of colorectal surgery. I... more Background: Anastomotic leak (AL) is one of the most feared complication of colorectal surgery. Its development is dependent of patient and surgery factors. Of these, bowel perfusion is one of the most important. Fluorescent angiography (FA) allows the identification in real time of the bowel perfusion.Objective: to describe the experience in the use of FA during colorectal surgery in a University Hospital setting in Buenos Aires, to register the change in surgical plan according to the FA findings and record the incidence of AL.Material y methods: Between January 2016 and June 2018, 37 patients with scheduled colorectal resections and FA bowel perfusion assessment were included.Results: Perfusion assessment with FA was possible in all cases with an extra operative time of 3 to 9 minutes, a change in surgical plan was registered in 4 cases (10.81%) and 2 AL were recorded (5.41%).Conclusions: FA during colorectal surgery is feasible, with minimum extra operative time and results in a...

Introduction: Endometriosis is a clinical entity characterized by the presence of endometrial tis... more Introduction: Endometriosis is a clinical entity characterized by the presence of endometrial tissue outside the endometrium, being the most aggressive rectocolonic condition. Design: Descriptive, retrospective case series study. Objective: Evaluate the feasibility of colorectal resections in this complex pathology that must be approached in a multidisciplinary way and report the results obtained from more than 10 years of work. Material and methods: In the period between 2005 and early 2017, 29 patients were evaluated in a multidisciplinary way. Results: One hundred and seventy-one patients were operated on for deep endometriosis, mean age 34 years. Twentynine patients required colon resection, 27 anterior resection and 2 sigmoidectomies. Seventeen end-to-end and 12 endtoside stapled anastomoses were performed. Twenty-eight anastomoses were performed between 7 and 5 cm from the anal margin and one at 4 cm. In the latter, a protective transverse colostomy was made. The mean operativ...

Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a therapeutic option for patients wit... more Pressurized intraperitoneal aerosol chemotherapy (PIPAC) is a therapeutic option for patients with unresectable peritoneal carcinomatosis. The steps and the surgical technique of the PIPAC technique are thoroughly described.

Journal of Coloproctology, Oct 1, 2017