Biomedical subjects

P Smejkal

Publications and source records attributed to P Smejkal.

11 recordsLinked to original sources

PubMed2003

[Appendectomy--classical or laparoscopic?].

The authors demonstrate on a group of 219 patients, who had in last two years the appendectomy performed, results of care while using open and laparoscopic technique. They compare these depending on chosen parameters, which is the usage of analgetic, the time patients have to stay in hospital after performed operation and comparison of spirometry within specific patients before and after operation. Based on these parameters the authors did not prove clear advantages of laparoscopic appendectomy.

Appendectomy↗

PubMed2003

[Molecular study of type 2 von Willebrand disease].

BACKGROUND: von Willebrand disease is an inherited bleeding disorders caused by mutations in the von Willebrand factor gene. We attempted to characterise the phenotype and the genotype in the first five families in Czech Republic affected by this heterogeneous disorder. METHODS AND RESULTS: The level of FVIII was measured by the one stage assay, the vWF:Ag by the immunoelectrophoresis, vWF:RiCo by aggregometry. For the vWF multimer analysis a western blot based technique was used. The vWF binding to FVIII was evaluated by the ELISA method. Two families were classified as the type 2A, one as the type 2B and two as the combined type 1/2N. Based on that knowledge, parts of the vWF gene were selected for genetic analysis. The previously described mutations Arg1374His and Gly1579Arg were identified in two families with the type 2A. In the family with type 2B a substitution Arg1308Cys was detected. In one family with the type 1/2N, two different previously described defects were found on the separate alleles of the vWF gene: a deletion of cytosine 2435 and a polymorphism Arg854Gln. Compound heterzygotes had the type 1/2N phenotype, while a carriers of the deletion had type 1 phenotype. In the second type 1/2N family, only the amino acid substitutions Thr791Me was found explaining the qualitative defect. A mutation underlying the quantitative deficiency needs to be searched for throughout the entire vWF gene. CONCLUSIONS: Based on the characterisation of the phenotype and genotype, five apparently unrelated families with the von Willebrand disease were diagnosed according to the revised classification. Our work represents laboratory basis for further studies into von Willebrand disease in Czech Republic.

Genotype↗

PubMed2002

[Lymphoma of the small intestine].

The authors analyze on a case-history the problem of lymphomas of the gastrointestinal tract. The patient was a female who was operated on account of a suspected perforation. On operation multiple perforations of the small intestine were found. A resection was performed. According to the histological results it was a giant-cell B-lymphoma of the small intestine. The postoperative course was without major complications. The patient was referred to the oncological department without further treatment.

Aged↗

PubMed2002

[Ampulloma of Vater's papilla--case report].

The authors discuss, based on a case-report, the diagnostic problems of malignities of the pancreas and ampulla of Vater. In the same patient they found an interesting complication after laparoscopic cholecystectomy (LCHE). It was a female patient who had LCHE four years previously where an ampulloma of the ampulla of Vater was diagnosed with invasion into the pancreas and a suspect secondary in the lower lobe of the right lung. On operation a pulmonary abscess was detected from a retained concrement. Duodenopancreatectomy which was performed did not reveal any tumour in the pancreatic area.

Adenoma↗

PubMed2001

[Surgery of esophageal achalasia--possible complications].

The authors demonstrate on a group of patients operated by a miniinvasive method possible complications of treatment of achalasia of the oesophagus. On a group of 61 patients they analyze all complications and try to detect their causes. They divide complications into peroperative, early and late postoperative ones. The most frequent peroperative complications are perforation of the oesophagus which are as a rule treated by the laparoscopic route. After surgery the most frequent problem is a relapse of achalasia. The latter is sometimes due to inadequate myotomy. This can be prevented by careful surgical technique along with peroperative endoscopic control.

Adult↗

PubMed2000

Surface-enhanced resonance Raman spectroscopy of porphyrin and metalloporphyrin species in systems with Ag nanoparticles and their assemblies.

The advantages of systems with Ag nanoparticles and their assemblies for surface-enhanced resonance Raman scattering (SERRS) spectral investigation, detection and determination of porphyrin species are demonstrated. SERRS spectral detection limits of the testing porphyrin species (including porphyrin aggregates) in these systems are shown to be, on average, 10(2)-10(3) lower than detection limits by resonance Raman scattering (RRS). Systems with Ag nanoparticles modified by anionic organosulfur spacers enable us to obtain SERRS spectra of unperturbed cationic porphyrin species. In the case of thiopheneacetate-modified Ag particles prepared by laser ablation, no negative effect of the spacer on the spectral detection limit of the porphyrin was observed. Systems with isolated Ag nanoparticles allow for obtaining SERRS spectra of porphyrin species upon excitation into the Soret electronic absorption band which leads to at least a 10-fold decrease in the detection limit.

Metalloporphyrins↗

PubMed1998

[An unusual complication after laparoscopic cholecystectomy].

The authors describe an interesting complication after laparoscopic cholecystectomy. During a complicated operation perforation of a gallbladder, severely altered by inflammation, occurred and part of the concrements escaped into the peritoneal cavity. Several concrements were left in the abdominal cavity. After several weeks of a complicated postoperative development the concrements penetrated into the subcutaneous layer in the lumbar region and finally they were eliminated spontaneously. In the discussion the authors deal with complications of laparoscopic cholecystectomy.

Abdomen↗

PubMed1998

[Combined surgical treatment of portal hypertension].

The bleeding from esophageal varices is at 85-90% cases stopped by conservative (i.e. non surgical) approach. The method of choice is endoscopic sclerotisation or ligation. Less often is necessary to perform TIPS. The rest of cases is necessary to resolve by one of surgical techniques of hemorrhage control--devascularisation operation or perform emmergently porto-systemic shunt. The authors stress the importance of devascularisation operations for theirs simplicity. On the case report they illustrate the advantage of combination of both surgical techniques.

Adult↗

PubMed1997

[Perforation of gastric and duodenal ulcers--laparoscopic sutures].

The authors compare in a small group of patients the results of treatment of perforation of peptic gastroduodenal ulcers. Some patients were treated by suture using a miniinvasive approach and some by classical laparotomy. The first laparoscopic treatment of a perforated ulcer was made at the Third Surgical Clinic in July 1995. Since then up to February 1997 thus eight patients were treated. During the same period seven patients were treated by the classical approach. Comparison of the period of hospitalization, postoperative complications, consumption of analgesics and postoperative temperature in these almost identical groups revealed that the results are more favourable after laparoscopic sutures.

Adult↗

PubMed1996

[Laparoscopic surgery in esophageal achalasia--initial results].

The authors present their initial results of laparoscopic operations on account of achalasia of the oesophagus. The first oesophagocardiomyotomy was performed at the author s department by the laparoscopic approach in September 1994. In the course of one year 20 of these operations were performed. The mean period of complaints before surgery was 5.9 years with a range of 1 to 40 years. Only six patients were operated during the stage of compensated achalasia, the remainder already in the stage of decompensation. As to peroperative complications twice perforation of the oesophagus occurred, in one instance treated laparoscopically and once during conversion by the classical approach. In one instance the a. epigastrica was injured and haemoperitoneum developed and subsequent revision was urgent. All patients were relieved of their dysphagic complaints, one female patient developed minor pyrosis.

Adult↗

PubMed1993

[Laparoscopic cholecystectomy].

The authors present an account of their experience assembled during one year with laparoscopic operations of the gallbladder. They indicated 248 patients for CHE incl. 237, i.e. 95.6%, for laparoscopic CHE. No deaths, no major complications, 6.5% conversions in elective indications, 23% in acute indications. Six patients with residual choledocholithiasis are in the authors' opinion a signal calling for more accurate detection of CHLDL before and during LCHE.

Adolescent↗