Biomedical subjects
Vladimir Supanc
Publications and source records attributed to Vladimir Supanc.
Efficacy and safety of propofol sedation during urgent upper gastrointestinal endoscopy--a prospective study.
The aim of this study was to investigate both the efficacy and safety of sedation with propofol during urgent therapeutic gastroscopy in patients with upper gastrointestinal bleeding. This prospective study included a total of 110 patients. Propofol was administered intravenously at the starting dose of 1 mg/kg body weight and was followed by repeated doses. Oxygen saturation and heart rate were monitored by pulse oxymetry. The mean dose of propofol administered was 161 +/- 49 mg. Urgent upper GI endoscopy under propofol sedation was successful in 98% of cases. Endoscopists rated the sedation as good in 83.6%, satisfactory in 14.5%, and poor in 1.8% of patients. Potentially harmful drop in oxygen saturation below 85% was observed in 5.5% of patients, whereas a temporary drop in heart rate below 50 beats/min was observed in 11.8%, not requiring any intervention. Almost 93% of patients could not remember the beginning or the end of the intervention. This data demonstrates that sedation with propofol is suitable for use in patients with upper gastrointestinal bleeding undergoing urgent endoscopy.
[Primary sclerosing cholangitis--diagnosis and therapy].
Primary sclerosing cholangitis (PSC) is a chronic cholestatic liver disease of unknown origin, characterized by inflammation, fibrosis, and obliteration of bile ducts, which ultimately results in biliary cirrhosis. The condition most commonly affects intrahepatic and extrahepatic bile ducts together, but sometimes only intrahepatic or extrahepatic ducts are involved. PSC is often associated with inflammatory bowel disease, especially ulcerative colitis. The majority of patients are initially asymptomatic, and identified on the basis of elevated serum levels of alkaline phosphatase or gamma-glutamyl transpeptidase, especially while screening patients with ulcerative colitis. Diagnosis is based on characteristic cholangiographic appearance with focal bile duct dilatations proximal to areas of stricturing that produce a beaded appearance. Ursodeoxycholic acid is most effective medical therapy, with other symptomatic measures, while liver transplantation is the treatment of choice for patients with advanced liver disease.
[Caroli's disease].
Caroli's disease is a rare condition characterized by congenital polycystic dilatation of the intrahepatic bile ducts. The most frequent clinical presentation of a simple type (Caroli's disease) is recurrent cholangitis, gallstone with pain, obstructive jaundice and episodes of pancreatitis in childhood and early adulthood. A more frequent type combined with congenital hepatic fibrosis is usually manifested with bleeding from esophageal varices consequential to portal hypertension. Treatment options, both conservative and surgical, are relatively limited and depend on the clinical presentation, localization of cysts in the liver, and stage of the disease. A 20-year-old man with Caroli's disease manifested with cholelithiasis and choledocholithiasis with recurrent pancreatitis at the age of 16 is presented. The diagnosis was confirmed by endoscopic retrograde cholangiopancreatography and magnetic resonance cholangiopancreatography. Treatment with ursodeoxycholic acid was initiated and after two years of follow-up the disease is stable.
Efficacy of endoscopic clipping for actively bleeding peptic ulcer: comparison with polidocanol injection therapy.
BACKGROUND/AIMS: The use of hemostatic clips is conceptually attractive for achieving definitive hemostasis in peptic ulcer bleeding. There are only a few clinical trials comparing clipping with other endoscopic hemostatic methods. The aim of this study is to assess the efficacy and safety of endoscopic clipping with that of injection of polidocanol for hemostasis from actively (spurting or oozing) bleeding peptic ulcer. METHODOLOGY: 61 patients with active (spurting or oozing) bleeding gastroduodenal ulcers were randomly assigned to one of two endoscopic treatments: injection therapy with polidocanol 1% (injected in 0.5-1.0 mL increments at three to five sites around the bleeding vessel to a total of 5 mL) (n=30), or endoscopic clipping using a clipping device and clips (n=31). All patients from the polidocanol group and 22 (68.8%) patients from the clipping group received pretreatment with epinephrine. Hemostatic rates, rebleeding rates, amounts of blood transfusion, and durations of hospital stay were analyzed. RESULTS: The initial hemostatic rate was 96.8% in the clipping group, and 96.7% in the polidocanol group, respectively. Mean transfusion requirements, mean number of hospital days and percentage needing surgery were comparable in both groups. Recurrent bleeding rates were higher, although not statistically significant in the polidocanol group than in the clipping group (13.3% vs. 6.5%, respectively). CONCLUSIONS: Our data suggest that injection therapy with polidocanol and endoscopic hemoclips seems to be equivalent for actively (spurting and oozing) bleeding peptic ulcer.
Minimally invasive treatment of causes and complications of biliary pancreatitis.
We report a case of a 52-year-old man admitted to our hospital because of acute biliary pancreatitis caused by cholelithiasis. The patient also had choledocholithiasis complicated with pancreatic pseudocyst. Endoscopic retrograde cholangiopancreatography (ERCP) was performed and a large number of common bile duct stones were extracted with Dormia basket upon papillotomy. Pancreatic pseudocyst as a major complication of acute pancreatitis was also managed endoscopically by transpapillary stenting. Laparoscopic cholecystectomy with choledochotomy and choledochoscopy was performed for the final removal of biliary stones. Postoperative subhepatic abscess was resolved by ultrasound-guided percutaneous drainage. In this case biliary pancreatitis with all its complications was treated through minimally invasive endoscopic, percutaneous and surgical procedures. Minimally invasive techniques are much better because they reduce surgical stress, caused by reduction of flow through the splanchnic, which can also be reinforced by general endotracheal anesthesia. In the case when relative hypoxia occurs and acute serous pancreatitis transfers to acute necrotic pancreatitis, minimally invasive technique is the first and the best choice for surgical procedure.