Biomedical subjects

P Roubal

Publications and source records attributed to P Roubal.

At least 19 recordsLinked to original sources

PubMed2002

[Acute biochemical effects of calcium: comparison of two dosage forms of calcium carbonate (powder and effervescent tablets) and milk in healthy women].

BACKGROUND: The aim of this study was to assess acute biochemical changes after the administration of two different pharmaceutical forms of calcium carbonate or milk. METHODS AND RESULTS: The group of 12 young (aged 20-27 years) and 12 older women (aged 63-71 years). After overnight fasting, each of the volunteers received a 1 g of elemental calcium in either form of the tested preparation: powder form of calcium carbonate--Vitacalcin pulvis (Slovakofarma, SR) or effervescent tablet--Calcium 500 mg Pharmavit (Pharmavit, MR) or in 250 ml of milk enriched with the milk calcium complex. Between each test the interval of 1-2 weeks was held. Samples of blood and urine were taken in the fasting state before and during 5.5 h following ingestion of the calcium load. Both calcium carbonate and milk induced a significant increase in the serum ionised calcium (iCa) and a significant decrease in plasma parathormone level (PTH) in comparison with the baseline levels in both groups of women. Comparison between individual preparations and between preparations and milk did not reveal any significant differences in suppression of PTH. Comparison of the effects between young and elderly women did not show any statistically significant difference in any measured parameter. CONCLUSIONS: Our results confirmed the good bioavailability of calcium from milk and from both calcium preparations in both age groups of women. Significantly more frequent hypercalcemia in the young women (p < 0.05) and also the slightly higher hypercalciuria occurred after the application of calcium in the pharmaceutical form of effervescent tablet than after the application of calcium in the form of powder or after the application of milk.

Adult↗

PubMed2000

Ruptured abdominal aortic aneurysm--outcomes in the last ten years.

Ruptured abdominal aortic aneurysm (AAA) remains to be represent a common and highly lethal problem. We reviewed the records of 92 patients (73 men and 19 women) operated on for ruptured infrarenal AAA within the past 10 years (January 1989 to October 1999) in the 2nd Department of Surgery in Brno, Czech Republic. The mean age was 71 years (range 57 to 92 years). Only 10 patients (10.9%) were known to have an AAA before the rupture. Preoperative systolic blood pressure below 90 mmHg was present in 70 patients (76%) and 15 patients (16.3%) experienced cardiac arrest before surgery. The in-hospital mortality rate was 47.8% (44 patients). Among the total of 92 patients, haemoperitoneum was discovered only in 30 patients (32.6%) with the mortality rate of 40% (12 patients). In 62 patients (67.4%) also hemoperitoneum was present, the mortality rate was 51.6% (32 patients) in these patients. Multiorgan failure due to an irreversible hemorrhagic shock was the main cause of death in 23 patients (25%). Further causes were: heart failure--8 patients (8.7%), pulmonary complications--5 patients (5.4%), renal failure--4 patients (4.3%), bleeding--3 patients (3.3%), and sepsis--1 patient (1.1%). The patient's prognosis depends on early diagnostics and on the quality of peroperative and postoperative care. (Tab. 2, Ref. 8.)

Aged↗

PubMed2000

[Ischemic disease of the lower extremity and lumbar sympathectomy].

We consider lumbar sympathectomy (LSE) to be the last attempt to improve the condition of the limb. Though being aware of inconsistent opinions on LSE, we are not opponents of this method, particularly if it is carried out in a selected group of patients, that is in case of: 1) treatment of frostbites, 2) treatment of patients at an early stage of advanced ischemia whose main symptom is moderate night pain at rest, 3) desiccation of chronically moist ulcerations between the toes, 4) treatment of patients with reflex symptomatic dystrophy (causalgia), 5) Buerger's disease.

Female↗

PubMed2000

[Ruptured abdominal aortic aneurysms].

The authors present the results of a retrospective study concerning 96 patients with an abdominal aortic aneurysm rupture who underwent surgery in the 2nd Department of Surgery in Brno in the time period from 1989 to 1999. In 30 cases (31.2%) there was an isolated retroperitoneal rupture, 66 patients (68.8%) also had haemoperitoneum. The mean age of the patients was 74 years and the male/female ratio was 76 (79.2%): 20 (20.8%). Twelve patients (40%) did not survive the retroperitoneal rupture, and 34 patients (51.5%) did not survive the intraabdominal rupture. Total mortality in the study group was 47.9%. The type of the rupture and the size of the haematoma that is in correlation with the time of diagnosis and operation, are among the most decisive prognostic factors. Patients with a small haematoma show higher survival rates. In large retroperitoneal haematomas accompanied by a haemorrhagic shock, the mortality was about 40% in the presented study group, in intraabdominal ruptures the mortality rate increases to values over 50%. The results are in accordance with foreign literature data, and the authors agree with the opinion that haemodynamically unstable patients with suspected abdominal aortic aneurysm rupture should be, after necessary preparations, urgently operated without complementary examinations.

Aged↗

PubMed1997

[Resection of the first rib for the upper thoracic outlet syndrome-- long-term experience].

The authors describe their own experience with the surgical treatment of the upper thoracic aperture syndrome-TOS-during the period of 14 years. During this period on account of this diagnosis at the Surgical Clinic in Brno 112 patients were operated, whereby the resection of the first rib was always done by the transaxillary approach. The authors describe in detail the symptomatology, diagnosis and surgical treatment. They emphasize the advantages of the transaxillary approach. In the conclusion the authors discuss the fact that only in 45% of the operated patients the symptoms disappeared. This leads to reflections on more strict criteria for the surgical treatment of this syndrome.

Humans↗

PubMed1997

[Carotid-subclavian bypasses (1985-1996)].

A carotic-subclavian bypass is an extraanatomical reconstruction. It is one of the possibilities how to connect the ipsilateral common carotid and subclavian artery. The authors evaluate carotic-subclavian bypasses made during the past 11 years at the Second Surgical Clinic in Brno. In all twelve cases carotico-subclavian bypasses were involved, in none of the patients a subclavian-carotid bypass was involved or direct anastomosis. The author discusses in detail preoperative complaints, associated diseases, postoperative complaints. In his opinion absolute indications for surgery are neurological symptomatic affections even of one trunk, incl. subclavian steal syndrome. They indicate asymptomatic affections for surgery if at least two trunks are affected. The greatest pitfall of the operation is in their opinion the selection of the length and type of vascular prosthesis. They find that the interval patency rate 100% and the cumulative patency rate 85% evaluated by the method of "Life table analysis" with a standard error of patency rate of 9% are comparable with similar reports from abroad.

Blood Vessel Prosthesis Implantation↗

PubMed1997

[Aneurysm of the splenic artery].

The authors describe in their paper possibilities of surgical and intervention treatment of an aneurysm of the lienal artery, their advantages and disadvantages. They evaluate the results of treatment of aneurysms of the lienal artery in three patients treated at the Second Surgical Clinic in Brno in 1993-1996. In the first patient the aneurysm was resected concurrently with splenectomy. In the second patient resection of the aneurysm with end to end anastomosis of the lienal artery was made. In the third patient the method of artificial embolization of the aneurysm of the lienal artery was used. The results are good. The first two patients were discharged ten and nine days resp. after surgery and are in a good clinical condition. The third patient had treatment in four sessions within two months and the final effect is a completely embolized aneurysm of the lienal artery with a preserved blood supply of the spleen and its intact function. The authors maintain that when dealing with an aneurysm of the lienal artery the surgeon has several possibilities and it is up to him which possibility he will chose with regard to anatomical conditions, the patients general condition and his own abilities and possibilities. The authors recommend if possible to preserve the spleen as a functioning organ or to preserve at least its immunological function.

Aged↗

PubMed1997

[Embolisms of the abdominal aortic bifurcation].

The authors evaluate in the submitted paper the results of surgical treatment of embolization into the bifurcation of the abdominal artery at the Second Surgical Clinic in Brno during 1990-1996. A total of 5 patients was involved whereby in all a cardiac cause of the embolization was obvious. The authors deal also with the time which has elapsed between the development of complaints and surgery, the type of anaesthesia, average length of operation. The operation is implemented concurrently by two teams as antero- and retrograde simultaneous bi-transfemoral embolectomy. The authors emphasize the importance of the metabolic condition of the patient as well as cardiac and renal functions before, during and after surgery. They consider the application of peroperative haemodialysis essential. During the postoperative period it is important to find the objective cause of the cardiac deficiency and treat it. Their results--a 40% mortality are comparable with those of other specialized departments. By comparison with a similar group treated at the same department twenty years previously the authors find a decline in the incidence of this disease and explain this phenomenon by an increased number of cardiosurgical operations in this area.

Aorta, Abdominal↗

PubMed1997

[An unusual embolization of a projectile in the superficial femoral artery].

The authors present an account on a gunshot wound which penetrated into the lateral side of the distal chest on the right. They describe acute treatment of severe haemorrhagic shock by suture of a lacerated with liver segment and resection of the upper pole of the right kidney. The projectile was not searched for because of the patients general serious condition. After 30 days the patient was discharged in a good condition. Shortly after discharge, i.e. cca one month after the injury, the patient developed signs of chronic ischaemia of the left lower extremity-finally claudications after 150 meters. Based on peripheral arteriography, which revealed the projectile in the area of the beginning of the superficial femoral artery and an ample collateral circulation, surgery was initiated. The bullet was extracted from the lumen of the superficial femoral artery from longitudinal arteriotomy. The artery was then treated by thrombectomy and a venous patch. Peroperative arteriography indicates satisfactory passage into the periphery. The authors try to reconstruct the pathway of the shot and in particular how the projectile penetrated into the artery. They emphasize the necessity to look for the projectice at the site of the shot wound. The objective of the paper is to make readers familiar with a case of uncommon embolization of a projectile into the superficial femoral artery and mistakes which may occur during treatment of a gunshot wound. The result is that the patient is quite free from complaints, as was confirmed by repeated out-patient check-ups.

Embolism↗

PubMed1991

[Problems in indications for vascular reconstructive surgery].

The authors discuss examinations made before a planned vascular reconstruction operation. As the number of vascular reconstruction operations is steadily increasing, and the operations affect the entire organism, and the operations are associated with a relatively high mortality rate, the authors try to reduce the latter by the correct classification into a risk group, select the correct order of surgical operations, and last not least, on the basis of these conclusions they try to define also the surgical procedure proper during reconstruction. As atherosclerotic affections can be isolated or combined, the authors divide the patients into three groups. The first group can be subjected to a reconstruction operation without special preparation. The second group comprises patients where it is either necessary to confirm or rule out affection of extracranial cerebral arteries and the third group comprises patients where it is necessary to confirm or rule out affection of the coronary arteries. The aim of this comprehensive procedure is to reduce as much as possible the surgical mortality.

Adult↗

PubMed1987

The redox potential, rH and pH values in the gastrointestinal tract of small ruminants.

Oxidation-reduction potentials (Eh), pH and rH in the gastrointestinal tract were measured in six goats and two sheep fed on ground barley and hay, with or without the addition of urea. Each ration was supplied for three weeks. The animals were slaughtered after morning feeding, the contents of relevant parts of the gastrointestinal tract were sampled, pH and Eh values were measured and rH values calculated. The range of the oxidation-reduction potential was rather extensive, from -300 to +186 mV. The variability of rH values was smaller, being between 4.6 and 12.9, except for three values. The following linear relationship holds for findings of Eh and pH: Eh (mV) = 292-69.9 pH with a correlation coefficient of r = 0.84. In those parts of the gastrointestinal tract, where the fermentation process occurs (the rumen, caecum and colon), the Eh and rH values are lower than those in the abomasum and duodenum. Urea addition has no effect on the oxidation-reduction equilibrium.

Animal Feed↗

PubMed1984