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Biomedical subjects

T Løtveit

Publications and source records attributed to T Løtveit.

At least 19 recordsLinked to original sources
PubMed2003

Assessment of mucosal inflammation and circulation in response to probiotics in patients operated with ileal pouch anal anastomosis for ulcerative colitis.

BACKGROUND: Pouchitis is a common and troublesome condition, and a disturbed microbiological flora and mucosal blood flow in the pouch have been suggested as possible causes. Laser Doppler flowmetry (LDF) has been used successfully to measure gastric and colonic mucosal perfusion in humans. The aim of this study was to evaluate the effect of intervention with probiotics on ileal pouch inflammation and perfusion in the pouch, assessed by endoscopy, histology, fecal calprotectin and LDF. METHODS: A fermented milk product (Cultura; 500 ml) containing live lactobacilli (La-5) and bifidobacteria (Bb-12) was given daily for 4 weeks to 10 patients operated with ileal-pouch-anal anastomosis (IPAA) for ulcerative colitis (UC). Mucosal perfusion was measured with LDF and the degree of inflammation was examined at predefined levels of the distal bowel by endoscopy and histology. Stool samples were cultured for lactobacilli and bifidobacteria and calprotectin were measured before and after intervention. RESULTS: The LDF measurements were reproducible in the pelvic pouch at each of the predefined levels, but did not change after intervention. The mucosal perfusion was reduced in the distal compared to the proximal part of the pouch. Calprotectin levels did not change significantly after intervention. The median endoscopic score for inflammation was significantly reduced by 50% after intervention, whereas the histological score did not change significantly. CONCLUSION: The results suggest that probiotics primarily act superficially, with change of gross appearance of the mucosa at endoscopy, but without significant effect on histological picture, mucosal perfusion or faecal calprotectin, during a relatively short period of 4 weeks.

Adolescent↗
PubMed2001

[Surgical treatment of esophageal cancer].

BACKGROUND: Oesophageal cancer is a serious condition with low long-term survival. The objective of this study was to define procedural safety and survival following tumour resection. MATERIAL AND METHODS: All 46 patients (41 men) operated for oesophageal cancer at the National Hospital, Oslo, Norway between 1987 and 1994 were reviewed. Median age was 61 years. 23 patients had squamous epithelial carcinoma and 20 had adenocarcinoma. Right-sided thoracotomy combined with laparotomy was performed in 38 patients (83%). RESULTS: Serious complications occurred in 17 patients (37%). Seven patients developed postoperative anastomotic leakage. Eight patients were reoperated due to complications. Perioperative mortality was 13%. Surveillance time at the intensive care unit was median eight days; nine patients stayed at the intensive care unit for more than 20 days. Three and five year survival for patients with adenocarcinoma were 30% and 20% respectively, and for patients with squamous cell carcinoma 18% and 14%. INTERPRETATION: Surgical treatment of oesophageal cancer has high morbidity and mortality. Long-term survival is achieved in only few patients.

Adenocarcinoma↗
PubMed2001

[Results after emergency surgery and ileoanal anastomosis in ulcerative colitis].

BACKGROUND: Patients suffering from severe ulcerative colitis often receive emergency colectomy at vital indication. Some of them are offered an ileal pouch-anal anastomosis a few months later. MATERIAL AND METHODS: All patients (n = 80) from May 1985 to August 1998 who were subjected to emergency colectomy at the National Hospital of Norway because of severe ulcerative colitis were studied prospectively. 40 patients later underwent a successful ileal pouch-anal anastomosis operation; 36 of them were sent a questionnaire assessing anal function. RESULTS: No patients died during admission or within 30 days of emergency colectomy. Five patients (6%) developed postoperative complications requiring reoperation. 31 patients returned the questionnaire. All reported full bowel control, although two used pads during night. Mean number of evacuations per 24 hours was six. 14 patients (45%) usually had evacuations during night. All patients would prefer ileal pouch-anal anastomosis if they were given the choice between this and permanent ileostomy again. 87% were satisfied with the operation result, 10% were moderately satisfied, 3% were not satisfied. INTERPRETATION: The results of urgent colectomy are good, and patients aged < 50 may expect good anal function after receiving ileal pouch-anal anastomosis.

Adolescent↗
PubMed1996

[Free vascular grafts in reconstructions in the head and neck region].

Since 1989, 40 free-tissue grafts were used in 39 patients to repair defects following major head and neck ablative surgery (n = 32) and for reconstruction of the mandible because of osteoradionecrosis or trauma (n = 7). The radial forearm flap was used in 17 patients (five including a segment of radius), the lateral arm flap in seven, fibula in five and a segment of ileum for restoration of the hypopharynx in 11 cases. Three radial forearm flaps and the bone in one lateral arm flap failed. Better functional and cosmetic results seem to be obtained with free flaps than with other reconstructive techniques.

Craniocerebral Trauma↗
PubMed1996

Characterization of 'winners' to enoxaparin in the prevention of postoperative venous thromboembolism in digestive surgery.

BACKGROUND: A total of 826 patients were included in three 'play-the-winner' studies to investigate the safety of prophylaxis against venous thromboembolism in digestive surgery. To characterize patients benefiting from prophylaxis with low-molecular heparin, the 445 patients allocated to enoxaparin were investigated. METHODS: A training set consisting of 292 patients from 2 of the studies was analysed by using a linear discriminant model. The reliability of the results was verified on a test set consisting of 153 patients from the third study. RESULTS: A typical 'winner' was a young patient, preferably female, with serum bilirubin in the lower normal range, combined with body temperature, serum sodium, creatinine, and albumin in the upper normal ranges. By using the discriminant function on the test set, 81.7% of the 'winners' and 21.1% of the "losers' were correctly classified. CONCLUSION: The discriminant function for characterization of winners to enoxaparin was found adequate. No rule was acceptable for characterization of losers.

Anticoagulants↗
PubMed1993

Radiology of the ileal J-pouch-anal anastomosis (IPAA).

Forty-four consecutive patients operated on with ileal J-pouch-anal anastomosis (IPAA) and diverting ileostomy were examined with barium contrast medium of the pouch before closure of the ileostomy. CT was performed in 4 of the patients. The anatomy of the ileal reservoir as well as complications were assessed. As normal postoperative anatomy we found a "blind loop" at the upper part of the reservoir in 29 patients and a contrast lucency at the anastomosis between the anal channel and the pouch in 5 patients. Complications were revealed at barium contrast medium examinations in 13 patients, including stenoses at the anastomosis between the pouch and the anal channel in 8 patients and fistulas in 5 patients. CT was especially valuable in the exact diagnosis and location of a pelvic abscess in 3 patients, none of which was shown at pouchography.

Adolescent↗
PubMed1989

Juxtapapillary duodenal diverticula predispose to common bile duct stones.

In an endoscopic study of 107 patients with suspected common bile duct calculi, 26 were found at retrograde cholangiography to have juxtapapillary diverticula (JPD). Over 80% of these patients had common bile duct calculi, compared with only 52% among those without any JPD (p less than 0.01).

Adult↗
PubMed1988

Juxtapapillary duodenal diverticula.

This paper presents a review of the clinical significance of juxtapapillary duodenal diverticula in man. The incidence of such diverticula varies considerably in the literature, and possibly depends on the methods of investigation used. Studies show that the incidence of biliary calculi is significantly higher in patients with juxtapapillary diverticula as compared with patients without such diverticula. The assumed higher rate of diverticula in patients with pancreatitis is probably due to the presence of biliary calculi in these patients. Studies have shown that there is an insufficient choledochoduodenal sphincter in patients with diverticula, and also a higher rate of bacterial contamination of the duodenum and bile ducts in these patients. Fecal type flora has been found in most patients with juxtapapillary duodenal diverticula. Further, pigment gallstones have been found in most patients with diverticula, and analyses of these calculi showed that calcium bilirubinate was the main component. Further studies in our laboratory have shown that bacterial cultures produced beta-glucuronidase, a fact which may be connected with the increased frequency of pigment gallstones. Other studies have shown that there is a higher rate of diverticula in patients with recurrent biliary calculi who had undergone cholecystectomy. Recent data have also shown that there is a higher rate of common bile duct calculi in patients with diverticula, than in those without diverticula and without prior cholecystectomy--a fact supporting the theory on the pathogenesis of biliary calculi in patients with juxtapapillary diverticula. Other, and rare complications due to such diverticula are also mentioned.

Adult↗
PubMed1987

The probability of pancreatitis after pancreatic parenchymatography with a non-ionic contrast medium. A sequentially designed clinical trial.

Endoscopic retrograde pancreatography (ERP) with parenchymatous contrast filling may result in clinical pancreatitis. The aim of the present prospective trial was to assess the frequency of acute pancreatitis after pancreatic parenchymatography with a non-ionic contrast medium, metrizamide. For ethical reasons the examination was designed as a sequential study with clearly defined stopping rules. None of the 48 patients studied developed clinical pancreatitis. This indicates that the probability of pancreatitis after parenchymatography is less than 5%. A high degree of contrast filling was obtained both in patients with normal and in those with pathologic pancreatic ducts. The contrast filling of the ducts was associated with not more than a slight pain. The rise in serum amylase was considerable but was not associated with clinical pancreatitis and returned to preexamination levels within 48 h. The examination shows that the non-ionic contrast medium used is well tolerated in ERP.

Adult↗
PubMed1986

Beta-glucuronidase-producing bacteria in bile from the common bile duct in patients treated with endoscopic papillotomy for gallstone disease.

This paper reports the occurrence of beta-glucuronidase-producing bacteria in the bile in gallstone patients treated with endoscopic papillotomy (EPT). The study included 36 patients--18 women and 18 men, aged 43-87 years, with a median of 72.5 years. Bile sampling was done with an endoscopic technique. All bacterial strains were tested for beta-glucuronidase activity with a rapid chromogenic tablet test, using 4-nitrophenyl-beta-D-glucuronic acid as substrate. Bacterial growth was found in the bile in 35 patients. Of 103 strains isolated, 30 produced beta-glucuronidase. Twenty-five of the patients had at least one beta-glucuronidase-producing strain in the bile. All 26 strains of Escherichia coli were producing the enzyme. Both strains in the Bacteroides fragilis group and one out of two strains of Clostridium perfringens were producing beta-glucuronidase. The activity of the bacterial beta-glucuronidase was found within the pH range of the bile in these patients. A relationship between the presence of beta-glucuronidase-producing bacteria in the bile and pigment gallstone is suggested.

Adult↗
PubMed1985

Acute appendicitis in patients with Gilbert's syndrome.

Gilbert's syndrome is a benign disorder characterized by intermittent hyperbilirubinemia. Jaundice is provoked by anorexia and fever, conditions associated with acute abdominal illnesses. Three cases of Gilbert's syndrome and acute appendicitis are presented. The presence of jaundice resulted in errors of diagnosis with serious complications.

Abdomen, Acute↗
PubMed1982

Recurrent biliary calculi: duodenal diverticula as a predisposing factor.

Several studies indicate a causal relationship between duodenal diverticula and gallstone disease. The diverticula persist after biliary tract surgery, and it is therefore presumed that patients with diverticula have an increased disposition to develop new calculi in the bile ducts after cholecystectomy. To test this hypothesis, the occurrence of recurrent biliary calculi was studied in 101 patients who had cholecystectomy, all with an asymptomatic period of two years or more following the primary biliary surgery. All patients had symptoms, that indicated biliary tract or pancreatic diseases. The incidence of recurrent calculi in patients with diverticula was 87.5% (95% confidence interval, 66.9-95.8). In patients without diverticula, the incidence was 31.9% (95% confidence interval, 21.5-44.3). The difference is highly significant, and the results support the assumption tht diverticula in the area of the papilla of Vater dispose to gallstone disease.

Aged↗