The Thoracic and cardiovascular surgeon
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Thorac Cardiovasc Surg · Oct 1991
Experimental evaluation of heparin-coated cardiopulmonary bypass equipment with low systemic heparinization and high-dose aprotinin.
Cardiopulmonary bypass (n = 8 calves) with heparin-coated perfusion equipment, low-dose systemic heparinization (activated clotting time: ACT greater than 180 s) and high-dose aprotinin administration was evaluated in comparison to standard perfusion equipment with full-dose systemic heparinization (ACT greater than 480). All animals were perfused for 6 hours and similar values were observed for blood gases and mixed venous oxygen saturation in both groups. The heparin doses given in the study group before and during the 6 hours of perfusion totalized 14660 +/- 2553 IU as compared to 60833 +/- 5137 IU for the control group. ⋯ After mixing with the priming volume, plasma hemoglobine was 8.6 +/- 2.5 mumol/L in the study group versus 6.7 +/- 1.6 mumol/L in the control group. The highest value was observed in the study group after 2 hours of perfusion (8.2 +/- 2.1 mumol/L) versus 5 hours of perfusion in the control group (7.4 +/- 3.6 mumol/L). Prebypass LDH levels of 1610 +/- 150 IU in the study group versus 1740 +/- 210 IU in the control group moved to 1870 +/- 200 IU in the study group at 24 hours after perfusion versus 2650 +/- 400 IU in the control group at 24 hours and decreased thereafter.(ABSTRACT TRUNCATED AT 250 WORDS)
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Thorac Cardiovasc Surg · Aug 1991
Diagnostic value of transesophageal echocardiography in cardiac surgery.
The aim of this study was to assess the diagnostic value of intraoperative 2-D color Doppler transesophageal echocardiography (ITEE) for the surgeon and anesthesiologist in patients undergoing coronary bypass surgery or heart valve replacement. Information given by ITEE in 100 cardiac operations was documented. We judged the ITEE information, considering to what extent it was not to be obtained by other methods and to what extent it influenced the operation itself. ⋯ The two essential diagnoses referred to undetected vein graft occlusions. Information classified as valuable mainly referred to left and right ventricular function or valvular and prosthetic valve function when difficulties occurred during and after extracorporeal circulation. In conclusion, information given by ITEE, although generally regarded as dispensable in the procedures considered, was valuable in 10% of cases and in 2% even essential.
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Thorac Cardiovasc Surg · Apr 1991
Bronchoscopic removal of foreign bodies in children: retrospective analysis of 822 cases.
At the Department of Thoracic and Cardiovascular Surgery of Hacettepe University, a total number of 822 pediatric bronchoscopies were performed from 1984 through 1990 for suspected foreign body aspiration. Of the children 65.3% were boys and 34.7% were girls ranging in age from one month to 14 years. Definitive statement of foreign-body aspiration was obtained from 394 patients. ⋯ In the rest of the children inflammatory disorders were confirmed. The foreign bodies most commonly found in 639 patients were sun-flower seeds (21.1%), beans (10.4%), water-melon seeds (10%), and hazelnuts (9.8%). In our presented series, the incidence of non-fatal complication was 1.8%, apart from these patients 5 of them (0.6%) died after the bronchoscopic procedures.
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Thorac Cardiovasc Surg · Dec 1990
Case ReportsTraumatic herniation of the heart into the right pleura.
This case report summarizes our experience with a 19-year-old male patient who suffered a blunt chest trauma during a traffic accident. On admission no serious injuries could be detected, but 12 hours later displacement of the heart to the right side combined with sudden cardiac failure appeared. Emergency operation showed a right-sided rupture of the pericardium with complete herniation of the heart into the right pleural cavity and consequent strangulation by the pericardial margin.
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Thorac Cardiovasc Surg · Dec 1990
The practice of coronary surgery in the United Kingdom and Ireland: a survey.
The author has sent a questionnaire to 172 members of the Society of Cardiothoracic Surgeons but has received only 49 answers. However, about one third of the members do not practice coronary surgery, so an estimated 40% of active members submitted answers. The questionnaire was mainly distributed to Consultants in the National Health Service. The questions refer to cardiopulmonary bypass, myocardial protection, grafts, closure of the chest, and postoperative medication.