Biomedical subjects

P Onari

Publications and source records attributed to P Onari.

8 recordsLinked to original sources

PubMed2001

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

BACKGROUND: Mechanical lifting of the abdominal wall, a method based on traction and consequent elevation of the abdominal wall, is an alternative procedure to create enough intra-abdominal space necessary for videolaparoscopic surgery, dispensing the need for intraperitoneal gas insufflation. OBJECTIVE: This study aims to evaluate the technical feasibility of this procedure to carry out a videolaparoscopic cholecystectomy, while analyzing the clinical and functional aspects of this technique. PATIENTS AND METHODS: In the Digestive Tract Surgery Discipline of the Medical School at the University of São Paulo, São Paulo, SP, Brazil, was created the equipment to perform videolaparoscopic surgery using this method. The equipment has two sections: an external part which consisted of a frame attached to the operating table, inside which there is a sliding steel cable, moved by a ratched which is located at the lower end of one of the frame rods; the internal rod, the support, has an "L" shape, and its horizontal branch is made up of three turning rods and which is connected to the steel cable after insertion into the abdominal cavity. Ten patients underwent videolaparoscopic cholecystectomy using this equipment. The time taken to install the equipment, the operating area characteristics, the interference from the lifting equipment on surgical movements and on the intra-operative cholangiography, the measurements made of the force used during traction and extension of the abdominal wall elevation, and the medication required for postoperative analgesia were all evaluated. RESULTS: There were no intra-operative complications, and in none of the cases was it found necessary to convert to open surgery. We considered the insertion a safe and uncomplicated procedure, and the traction system efficient. Apart from the elevation of the abdominal wall, the distribution of the viscera inside the abdominal cavity is fundamental for the operating area. Depending on the position of the epigastric trocar, the lifting equipment can interfere with the surgical instruments mobility. It may be necessary to reposition the support to perform the intra-operative cholangiography. The tensional force applied to the peritoneal surface by the lifting rods is small, and no additional postoperative pain was observed using this procedure. CONCLUSION: These results show that using the equipment described in this study, mechanical lifting of the abdominal wall is a feasible alternative for undertaking videolaparoscopic cholecystectomy.

Abdominal Muscles↗

PubMed1998

Laparoscopic treatment of traumatic diaphragmatic hernia.

Traumatic diaphragmatic hernia is rare, but is of utmost importance due to its high morbidity and mortality. It is markedly important in patients with blunt abdominal trauma, and diagnosis is difficult because of the numerous associated injuries. A patient with few symptoms of chronic traumatic diaphragmatic hernia is described, who underwent surgery due to a gastric volvulus. Laparoscopic surgery permits repair of these injuries through an abdominal approach, avoiding a thoracic incision or selective intubation.

Adolescent↗

PubMed1998

Omental flap obtained by laparoscopic surgery for reconstruction of the chest wall.

The reconstruction of complex defects of the chest wall after infection of the sternotomy wound presents a great challenge. Various options have been described for these reconstructions using muscle and omental flaps to fill the space and cover the defect. A case of reconstruction of a large defect of the chest cage and abdominal wall in a 62-year-old patient is presented. After surgery for revascularization of the myocardium, the patient developed mediastinitis, osteomyelitis, and necrosis of the sternum. The pectoralis major muscle was utilized for the reconstruction, but total loss of the flap occurred. After débridement, an omental flap obtained by laparoscopy was employed based on the left gastroepiploic artery. The omentum was transposed without complications through the abdominal wall defect. An overlay skin graft with the omentum as receptor bed completed the closure. There are advantages in using minimally invasive videolaparoscopy compared with laparotomy in obtaining the omentum, with the same result regarding reconstruction of the defect.

Humans↗

PubMedDate not supplied

[Training of surgeons in laparoscopic surgery of the digestive system. Experience in 1,818 interventions without accidents and mortality].

UNLABELLED: Since the beginning or laparoscopic surgery on University of Sao Paulo Medical School Clinics Hospital, the Digestive Surgery Division established an educational program for surgeons of the alimentary tract. PURPOSE: The course structure includes the information on medical school, extension in laparoscopic surgery league, and surgical formation during the residence, mainly in the fourth year, with a three months period in the Laparoscopic Surgery Unit. METHOD: This model of surgical formation is certainly responsible for the excellent results obtained. RESULTS: An example is the performing of 1818 cholecystectomies in the Laparoscopic Surgery Unit from 1990 till 1998, with 0.9% convertion, and no mortality. The absence of operative accidents or complications give support to the orientation assumed in our Division. CONCLUSION: In a university hospital there is the necessity of professional formation in a well structured program, with humanistic and technical education, in a large period of rotation, but with a solid information and practical structure.

Cholecystectomy, Laparoscopic↗

PubMedDate not supplied

[Synchronous esophageal and stomach neoplasm: importance of diagnosis and treatment].

The association of esophageal and gastric cancer has been described because of the better technology in methods for diagnosis. In surgery for esophageal cancer, a gastric tube is often prepared to provide a new route for oral ingestion. Although patients with simultaneous esophageal cancer and gastric cancer have been reported, it is often difficult to diagnose the coexistence of gastric cancer preoperatively due to the presence of esophageal stenosis. In this paper we report on one case of the rare combination of squamous cell cancer of the esophagus and simultaneous adenocarcinoma of the stomach.

Adenocarcinoma, Mucinous↗

PubMedDate not supplied

[Esophagectomy using videosurgery].

This is a report of 10 cases of esophagetomy by videosurgery. Five patients had esophageal carcinoma and five had achalasia. The patients who had neoplasia were submitted to thoracoscopic, laparoscopic and cervicotomy and the others who had benign pathology were submitted to laparoscopic with transdiafragmatic approach and cervicotomy. The evolution was very satisfactory but there were complications that had no relation with the method. The follow up is being made and we have no sure about real results.

Adult↗

PubMedDate not supplied

[Reconstruction of a thoracic wall defect using a flap of omentum obtained by laparoscopy].

Reconstructive of complex chest wall defects following infected sternotomy represents a surgical challenge. Several options were described for these defects reconstructions, using muscles flaps and omentum which provided obliteration of dead space and coverage. We present a reconstruction of a major chest and abdominal wall defect in a 62-year old patient, who had mediastinitis, osteomyelitis and necrosis of sternum after myocardial revascularization. The pectoralis major was used unsuccessfully, with total loose of the flap. After wound failure, a flap of omentum based on the left gastroepiploic vessels was obtained by a laparoscopic surgery, with no complication. The omentum was translocated through the defect that reached the abdominal wall covering the defect and allowing the use of split-thickness grafts. The laparoscopic procedure showed advantages over the laparotomy in the management of omentum, with the same results in the reconstruction of the defect added the advantages of a minimal invasive procedure, mainly in patient with bad clinical conditions.

Humans↗

PubMedDate not supplied

[Laparoscopic repair of chronic traumatic diaphragmatic hernia: case report and review of the literature].

The management of diaphragmatic injury would appear to be a simple matter of suturing the defect. However, preoperative diagnosis can be difficult and even at the time of surgery some diaphragmatic injuries can be overlooked if careful exploration in not done. Associated injuries tend to divert attention from the diaphragmatic injury. Laparoscopic diagnosis and repair have been described with successful.

Adolescent↗