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Dive into the research topics where Pedro Onari is active.

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Featured researches published by Pedro Onari.


Revista do Colégio Brasileiro de Cirurgiões | 1998

Cardiomiectomia com fundoplicatura parcial videolaparoscópica no tratamento do megaesôfago não avançado: estudo de 50 casos

Carlos Eduardo Domene; Marco Aurélio Santo; Pedro Onari; Paula Volpe; Henrique Walter Pinotti

This is a prospective study of 50 patients with non-advanced achalasia treated by videolaparoscopic cardiomyectomy with partial fundoplication. The technical standardization of the operative procedure was evaluated, and the patients studied by clinical evaluation, endoscopy, eletromanometry, radiology and 24 hour pHmetry. The operation was completed laparoscopically in all patients, with no convertion to laparotomy. There were six (12%) intra-operative complications (mucosal perforation, pleural lesion and subcutaneous emphysema), two (4%) immediate post-operative ocurrencies and one (2%) death. There was no late complication. Clinical evaluation showed significant improvement of dysphagia, no regurgitation and weight gain after operation, and excellent and good results were obtained in 97.9% of the patients. In the post-operative period ocurred radiological improvement of esophageal dilatation and less endoscopic esophagitis. The eletromanometry showed significative decrease of lower esophageal sphincter pressure after operation, as well as 24 hour pHmetry verified less esophageal stasis and no gastro-esophageal refluxo There was no difference in the treatment of chagasic or non-chagasic patients. The benefits of laparoscopic surgery were obtained: less pain, early oral intake, short hospitalization and fast return to norma activities.


Revista do Colégio Brasileiro de Cirurgiões | 2000

Colecistectomia laparoscópica: estruturação de um modelo de trabalho

Henrique Walter Pinotti; Carlos Eduardo Domene; Paula Volpe; Marco Aurélio Santo; Pedro Onari

The authors showed the results of 1772 laparoscopic cholecystectomies, 1700 of them consecutevely without mortality and low morbidity and fast post-operative recovery. From the 1772 patients, 12,4% were over 70 years old; 49% of them had associated diseases. Surgical risk were evaluated from ASA I to IV. Chronic cholecystitis were present in 94,8% of the patients while, 3,6% had acute cholecystitis, and 0,2% gallblader cancer. Intraoperative cholangiography was performed in 83% of the cases. There were 67 patients with choledocolithiasis, 29 of them with no pre-operative clinical suspection. Conversion rate was less than 1%. Operative technique was standartized, beginning with the patient position in operative bed, trocars positioning, gallblader presentation with the graspers, as well as the timing of the structures dissection. The importance of the technical sistematization utilized is underlined, as well as the use of special instruments for dissection. It is presented a working model for surgical formation on alimentary tract laparoscopic surgery, in a progressive and sistematized way. It begins with the organization of a motivated surgical team, working together in order to improve the laparoscopic surgery methodology. The model for surgical formation of is responsible for the excellent results obtained.


Journal of Laparoendoscopic & Advanced Surgical Techniques | 1998

Laparoscopic treatment of traumatic diaphragmatic hernia.

Carlos Eduardo Domene; Paula Volpe; Marco Aurélio Santo; Pedro Onari; Sergio Szachnowicz; Henrique Walter Pinotti


Arquivos De Gastroenterologia | 2001

Videolaparoscopic cholecystectomy. Analysis of the clinical and functional aspects of mechanical lifting of the abdominal wall

Marco Aurélio Santo; Carlos Eduardo Domene; Ary Nasi; Pedro Onari; Paula Volpe; Henrique Walter Pinotti


Rev. Hosp. Clin. Fac. Med. Univ. Säo Paulo | 1998

Esofagectomia por videocirurgia

Carlos Eduardo Domene; Paula Volpe; Marco Aurélio Santo; Pedro Onari; José Ribas Milanez de Campos; Henrique Walter Pinotti


ABCD arq. bras. cir. dig | 1997

Laparoscopic treatment of megaesophagus: results of cardiomyectomy with fundoplication

Carlos Eduardo Domene; Marco Aurélio Santo; Pedro Onari; Paula Volpe; Henrique Walter Pinotti


Rev. Hosp. Clin. Fac. Med. Univ. Säo Paulo | 1998

Neoplasias sincronicas de esofago e estomago: importancia diagnostica e terapeutica

Carlos Eduardo Domene; Paula Volpe; Adriana Pinotti; Marco Aurélio Santo; Pedro Onari; Ivan Cecconello; Henrique Walter Pinotti


Rev. bras. cir | 1997

Fechamento de deiscência de esternotomia através de transposiçäo de retalho de grande omento por videolaparoscopia

André Bezerra de Menezes Reiff; Antenor Bonatto Junior; Hélio Kawakami; Pedro Onari; Carlos Eduardo Domene; José Marcos Mélega


Rev. Hosp. Clin. Fac. Med. Univ. Säo Paulo | 1997

Correçäo laparoscópica de hernia difragmatica traumática crônica: relato de caso e revisäo da literatura

Carlos Eduardo Domene; Paula Volpe; Marco Aurélio Santo; Pedro Onari; Sergio Szachnowicz; Fabio Cesar Atui; Henrique Walter Pinotti


Rev. Hosp. Clin. Fac. Med. Univ. Säo Paulo | 1997

Obtençäo de retalho de epiplon por via laparoscopica para reconstrucao de defeito da parede toracica

Carlos Eduardo Domene; Paula Volpe; Pedro Onari; Ingrid Birbojm; Sergio Szachnowicz; Lian Fabio Barreira; André Bezerra de Menezes Reiff; Henrique Walter Pinotti

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Paula Volpe

University of São Paulo

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Ary Nasi

University of São Paulo

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