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Biomedical subjects

F Prevost

Publications and source records attributed to F Prevost.

10 recordsLinked to original sources
PubMed1987

[Total esophagectomy by stripping without thoracotomy in cancer of the pharynx, esophagus and cardia. 34 cases].

Total oesophagectomy by stripping without thoracotomy was performed in 34 cancer patients to reduce operative mortality and morbidity in those with impaired respiratory function. The carcinoma was located in the pharynx in 20 cases, on the cardia in 9 cases and on the lower oesophagus in 5 cases. Reconstruction in the posterior mediastinum was effected with the descending colon in 32 patients. The operative mortality rate was 11.8% and fistulization developed in 20.6% of the cases. Eight patients (26.5%) required post-operative endoscopic dilatation. Ninety per 100 of the patients who survived surgery resumed satisfactory feeding. Thus, these patients with high operative risk who underwent oesophagectomy by stripping without thoracotomy benefited from tumoral excision and normal feeding with results comparable to those of other types of oesophagectomy.

Adult↗
PubMed1986

[Efficacy of hyperselective vagotomy on duodenal ulcer. 284 cases].

Two hundred and eighty-four patients who underwent highly selective vagotomy for duodenal or prepyloric ulcer were followed up for at least 1 year, and 47.9% of them for at least 5 years (mean : 58 months). The actuarial recurrence rates were 4.7% at 3 years, 9.6% at 5 years and 13.1% at 7 years. These results do not agree with the recently published figure of 20%. The authors insist on the necessity to dissect the lower oesophagus on a length of at least 5 cm. In duodenal ulcers, this technical detail should result in a cure rate of about 90% at 5 years.

Actuarial Analysis↗
PubMed1985

[Horizontal laparotomy in biliary tract surgery].

For operations on the biliary tract the transverse horizontal incision has the same advantages as the subcostal approach: strong abdominal wall, little influence on ventilation and wide access to the subhepatic region. But in addition, the abdominal wall nerves are preserved as much as possible, post-operative evisceration, it is occurs, can easily be repaired and subsequent surgery can be performed using the same route.

Biliary Tract Surgical Procedures↗
PubMed1985

[Effects of cholecystectomy on functional signs associated with cholelithiasis].

Two hundred hospital patients with gallstones who had been cholecystectomized on account of typical biliary colics were investigated for migraine, headache, malaise, vertigo, flatulence, diarrhoea or constipation 2, 6, 12 and 24 months after the operation. The study showed that these symptoms are common in patients with biliary lithiasis, particularly women, and that their frequency increases with the duration of the disease. The beneficial effects of cholecystectomy are uncertain and appear to decrease with time ; only 30% of the patients seemed to improve after surgery. It is concluded that these symptoms betray real functional disorders, that cholecystectomy is not the appropriate treatment for them and that any improvement observed may be credited to the placebo effects of the operation.

Adult↗
PubMed1985

Sleep, dreaming, and adaptation to a stressful intellectual activity.

Sixteen male subjects slept in the laboratory for 4 consecutive nights. Night 1 was an adaptation night and night 2 was a baseline night of uninterrupted sleep. On nights 3 and 4 subjects were asked to complete "intelligence" tests prior to sleep. One half of the subjects attempted to complete difficult versions of "intelligence" tests without knowing that they could not be completed in te time allotted. The other subjects were given easier versions of the same tests that they were able to complete in the time allotted. Night 3 was a night of uninterrupted sleep and night 4 involved REM period awakenings for the purpose of dream collection. Stressful manipulation consisted of telling the subjects before the administration of either set of tests that an average university student should complete most of the items within the allotted time. On night 3 both groups showed a significant increase in sleep latency and a significant decrease in REM density compared to the baseline night. On night 4 subjects in the difficult condition experienced significantly more anxiety in their dreams and somewhat higher levels of incorporation of the presleep material than subjects in the easy condition. Our findings suggest that following a stressful experience uninterrupted sleep has more short term adaptive value than a procedure which enhances dream recall and that subjects who incorporate elements from a presleep stressful event into their remembered dreams show less adaptation on awakening than subjects who do not.

Adaptation, Psychological↗
PubMed1985

Choledochoscopy in common bile duct surgery for choledocholithiasis: A must: Eight years experience in 441 consecutive patients.

Between 1975 and 1983, 441 choledochoscopy were performed in a series of 451 consecutive patients undergoing surgical common biliary duct exploration for choledocholithiasis. In 127 patients (27.8%), no stones were found. Forty-five cases (10%) of choledocholithiasis missed by surgical and radiologic exploration methods were found by choledochoscopy. Therefore the retained stone rate decreased from 10 per cent to 2 per cent. Fourteen patients (3%) died at surgery, ten of whom (2%) were over 70. Postoperative biliary tract was drained in 98 patients (8%) using external drainage. Biliary tract patency was checked on the tenth postoperative day by the tube cholangiography. When retained stones were not found, T-tube was removed on the 20th day after surgery. When retained stones were found (11 patients, 2%) an endoscopic papillotomy was performed. Choledochoscopy is a significant addition in biliary surgery. It reduces operative mortality and morbidity, decreases retained stone rate, diminishes indications for biliary anastomosis and sphincterotomy, and is easy to perform without specific training. Its extensive and systematic use is advocated when- ever common bile duct patency has to be surgically demonstrated in choledocholithiasis.

Adult↗