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Biomedical subjects

A Bernardes

Publications and source records attributed to A Bernardes.

6 recordsLinked to original sources
PubMed2004

A simple intra-operative maneuver to decrease a duodenal ulcer hemorrhage temporarily: description and anatomical bases.

Intraoperative hemostatic suture to treat a bleeding duodenal ulcer is sometimes difficult when there is massive hemorrhage. The aims of this paper are: (1) to describe a practical and easy intraoperative procedure which quickly decreases a massively bleeding duodenal ulcer, allowing the surgeon to identify the bleeding site clearly and obtain definitive hemostasis by suturing the involved vessels with a low risk of common bile duct lesion; and (2) to study in cadavers the anatomical basis of this surgical procedure already successfully performed on patients. Fourteen patients with massive duodenal ulcer bleeding, after unsuccessful endoscopic hemostasis, were operated on and included in this study. After surgical anterior gastroduodenotomy, the surgeon introduced a finger in a downward and forward direction in the bursa omentalis vestibule through the omental foramen. This simple and quick procedure decreased hemorrhage by compressing the gastroduodenal artery against the first part of the posterior surface of the duodenum. Twenty-four fresh blocks of normal tissue were removed from cadavers and were injected with silicone rubber through the common hepatic artery. The distance between the gastroduodenal artery and the omental foramen was measured. With this maneuver the surgeon can clearly see the exact bleeding site and perform an adequate suture with a minor risk of common bile duct lesion.

Blood Loss, Surgical↗
PubMed1996

Mesenteric arteriovenous fistula causing portal hypertension and bleeding duodenal varices.

We report a case of portal hypertension associated with a non-traumatic arteriovenous fistula, presenting with bleeding duodenal varices. The patient was admitted for melaena. Emergency endoscopy showed oesophageal varices with no signs of recent bleeding and with no blood in the upper gastrointestinal tract. Arteriography of the coeliac axis and superior mesenteric artery failed to detect any bleeding source. Endoscopy was repeated because of persistent bleeding and revealed active bleeding from varices in the distal duodenum. The patient underwent surgery and a large paraduodenal varicose vein associated with an arteriovenous fistula was found. Resection of the paramural varix and surgical occlusion of the arteriovenous fistula were effective in the control of bleeding. Liver biopsy revealed mild portal fibrosis without cirrhosis. Three years after surgery the patient still has oesophageal varices but has not had recurrent bleeding. There was regression of intraduodenal varices.

Aged↗
PubMed1992

[Diaphanization: modifications of organ weight and volume].

The diaphanization of organs previously injected with coloured substances is an excellent auxiliary method of numerous morphological studies. The authors studied 52 organs, among 15 were taken from human beings and 37 from dogs, with the aim of knowing theirs weight and volume modifications after diaphanization. The organs were diaphanizated with several impregnations in 10% formaldehyde, perydrol, acetone and at least embedding in a mixture of methylsalicylate and benzyl benzoate by vacuum process. After each embedding, weight and volume of each organ were measured. The variations that the organs suffered were statistically considered, under a few aspects: 1-global organs' variations after each embedding 2-different organs' variations 3-comparison between human being and experimental animals. In all cases, the authors noticed a great decrease of weight and volume, especially after dehydration steps with acetone and clearing with the mixture of methylsalicylate and benzyl benzoate. We also didn't find any significant difference between human organs and those taken from dogs.

Animals↗
PubMedDate not supplied

Subfascial endoscopic transaxillary augmentation mammaplasty.

Video endoscopy for breast hypoplasia and glabellar frown lines has been used since 1996 at our private clinic. Breast augmentation with an S-shape incision for transaxillary access is utilized to introduce the implant, in a submuscular or subglandular and, recently (since October 1998), in a subfascial location. From August 1998 through January 1999, 62 patients underwent endoscopic surgeries; 49 were submuscular, 5 subglandular, and 8 subfascial. McGhan 410, anatomical biodimensional implants 155 to 235 g, were used. We observed three cases of complications, two of them malpositioning (rotation), needing reoperation, and one hematoma, treated with drainage. Patient satisfaction was high, especially regarding the axillary incision. There have been no capsular contractions to date.

Adolescent↗
PubMedDate not supplied

Full-face laser resurfacing and rhytidectomy.

The Ultrapulse CO2 laser (Coherent Inc., Palo Alto, CA, USA) was used in 239 patients, from March 1996 to July 1998, for full-face laser resurfacing. In 106 (43%) of these patients rhytidectomy was performed in the same procedure. All patients submitted to laser resurfacing were prepared for 1 to 2 months beforehand with retinoic acid and hydroquinone. The procedures were done under local anesthesia controlled by an anesthesiologist. A clear film dressing impregnated with silicone gel (Silon TSR; Bio-Med Sciences, Bethlehem, PA, USA) was used for 6 to 7 days and complete healing was observed in 7 to 10 days. Complications were exclusively dermatologic, without relation to surgery. No necrosis of the cutaneous flap was observed. Skin biopsies of 10 consecutive patients undergoing the combined procedures revealed no vascular impairment to the dermis. The patients were able to resume their activities 2 weeks after the procedure.

Adolescent↗