PubMed Health⌕ Search

Biomedical subjects

W Kamiński

Publications and source records attributed to W Kamiński.

At least 19 recordsLinked to original sources
PubMed2003

Phonon softening, chaotic motion, and order-disorder transition in Sn/Ge(111).

The phonon dynamics of the Sn/Ge(111) interface is studied using high-resolution helium atom scattering and first-principles calculations. At room temperature we observe a phonon softening at the Kmacr; point in the (sqrt[3]xsqrt[3])R30 degrees phase, associated with the stabilization of a (3x3) phase at low temperature. That phonon band is split into three branches in the (3x3) phase. We analyze the character of these phonons and find out that the low- and room-temperature modes are connected via a chaotic motion of the Sn atoms. The system is shown to present an order-disorder transition.

Journal Article↗
PubMed1999

[Seasonal periodicity of perforated peptic ulcers].

The aim of the study was to evaluate if the frequency of peptic ulcer perforation depends on the changes of seasons. The investigation was carried out in mountain region of Nowosadecki District. This complication of peptic ulcer disease appeared with constant time trend in the years 1991-95. Considering the whole five year period, the increasing number of new cases was observed on the turn of spring and summer (May, June, July) and in early autumn (September, October). Another pattern of seasonal periodicity is often observed in different regions of the world. Because of that, it may be assumed that not changes of seasons but different environmental factors (also weather changes) may influence the frequency of peptic ulcer perforation.

Duodenal Ulcer↗
PubMed1997

Esophageal manometric studies in children with achalasia before and after operative treatment.

This study manometrically assessed and compared esophageal function in 16 children with achalasia before and after surgical treatment (anterior esophagomyotomy with antireflux partial fundoplication). Manometric examinations were done in 10 children preoperatively and in 12, 3 months to 8 years postoperatively. Both pre- and postoperative examinations were done in 6 patients. The following parameters were measured: lower esophageal sphincter (LES) pressure and length, spontaneous motility of the esophageal body, and motility provoked by swallowing of fluids. Preoperative examinations confirmed disturbances typical for achalasia: increased LES pressure (mean 39.4 mmHg), lack of relaxation upon swallowing, and various types of anomalous esophageal motility (lack of propulsive waves, segmental waves, breaks in propagation of contractions, tonic contractions, etc.). Postoperative examinations showed normalization of LES pressure; however, relaxation did not appear in any patient. Esophageal motility improved after surgery in most patients and was already noticeable 3-6 months postoperatively, but motility never returned to normal. Clinically, all but 1 patient with reflux esophagitis were doing well despite persistent motility disturbances. Our study confirms that achalasia is a complex motor disorder of the entire esophagus. The improvement of esophageal contractility after esophagomyotomy suggests both primary and significant secondary damage to motility of the esophageal body in most patients. It appears that secondary disturbances are reversible to some extent in children after surgical treatment.

Adolescent↗
PubMed1997

[Incidence and causes of upper gastrointestinal hemorrhage].

The incidence rate of the upper gastrointestinal haemorrhage in Nowy Sacz region in years 1991-1995 was 43.5/100 thousand/year among men and 20.1/100 thousand/year among women. The most common causes of bleeding among male were: duodenal ulcer, gastric ulcer and haemorrhagic gastritis. Among female gastric ulcer was more frequent than duodenal ulcer. In the whole group of haemorrhage, the average age of men was lower than the age of women. In similar, in the bleeding duodenal ulcer, gastric ulcer, haemorrhagic gastritis and gastric cancer groups--male were significantly younger.

Adult↗
PubMed1997

[Post-traumatic isolated bilateral lesion of the diaphragm].

The rare case of bilateral, post-traumatic, isolated lesion of the four-year-old child's diaphragm has been described. Quick diagnosis and proper treatment was possible after auscultation of the chest and simple radiological diagnostics.

Child, Preschool↗
PubMed1996

Diagnosis and monitoring of cytomegalovirus infection after liver transplantation in children.

Cytomegalovirus infection (CMV) complicated the posttransplant course in 9 of 24 children after liver transplantation. We found specific antibodies (IgG and IgM) to be of very low value in diagnosis and monitoring of CMV infection after liver transplantation. Detection of CMV-DNA by PCR method in the blood or urine was very useful for diagnosis, but less for monitoring of the course of disease and its treatment. Measurements of early immediate CMV antigen (IEA), in peripheral blood leucocytes allowed for very early diagnosis of CMV infection and correlated well with the course of disease and response to treatment of the patient.

Antibodies, Viral↗
PubMed1995

Pancreatic glucagon levels in infants and children with hyperinsulinemia.

Serum concentrations of pancreatic glucagon were measured in 40 patients with hyperinsulinemic hypoglycemia. In infants with severe disease the glucagon levels were markedly elevated; lower levels were observed in children with episodic hypoglycemia. During diazoxide treatment and after pancreatectomy, the glucagon levels decreased proportionally to suppression of the insulin secretion. Thus the secretion of glucagon seems to be retained in hyperinsulinism in proportion to the insulin hypersecretion, and an increased glucagon level indicates long during and severity of hyperinsulinemic hypoglycemia.

Adolescent↗
PubMed1975

[Balloon atrioseptostomy (B.A.S.) in the management of neonates and infants with transposition of great vessels (author's transl)].

From June 1969 to April 1973, B.A.S. was carried out in 2-day to 6-month-old 65 infants at the Institute of Paediatrics of the Academy of Medicine in Warsaw. There were 16 infants up to one week old, 39 infants--up to one month, and 10 infants more than one month old. There were 43 boys and 22 girls among them. Cardiac catheterization and B.A.S. were carried out in most children up to 24 hours following hospitalization under local anaesthesia and premedication with robenzperidol and dolantin. In 11 of the 65 infants after B.A.S. the saturation with oxygen in the right atrium under-went no significant changes; in 54 cases it increased by 10 to 49 per cent. Of the 65 infants in whom B.A.S. was performed, 37 are alive, 28 had died. In 20 children under constant outpatient cardiological follow up the observation period has amounted from 6 months to 3 years. Their motoric development and growth is retarded, there is moderate cyanosis, but no symptoms of congestive failure were found. All these children are administered digitalis in chronic maintenance doses. Respiratory infections occured frequently in these patients. As mentioned above, 28 infants died at the age of 2 days to 6 months. Post mortem examination revealed that the B.A.S. was unsufficient in 14 cases. However, 14 infants died in spite of the satisfactority performed atrioseptostomy. Pulmonary oedema or haemorrhagic-and-inflammatory changes in the lungs as well as generalized thrombosis were the most frequent causes of death. On the basis of their own experience the authors elaborated indications and instructions for B.A.S. in neonates and infants with congenital heart diseases. These directives are based on the Team Work of cardiologists, anaesthesiologists, cardiac surgeons and paediatric radiologists. Because ever greater numbers of neonates are being sent to the Institute of Paediatric of the Academy of Medicine from all over Poland, the authors organized continuous cardiological emergency service to carry out B.A.S. procedures as soon as possible, without delay.

Age Factors↗