| Author/Editor | Kirbiš, Janez | |
| Title | Analiza viabilnosti miokarda s pomoću segmentalnog epikardijalnog elektrokardiograma za vrijeme operacije na otvorenom srcu | |
| Type | monografija | |
| Place | Zagreb | |
| Publisher | Sveučilište u Zagrebu, Medicinski fakultet | |
| Publication year | 1997 | |
| Volume | str. 49 | |
| Language | cro | |
| Abstract | The purpose of the study was to examine the applicability of unipolar, segmental epicardial ECG during the open-heart surgery in order to determine the extent of the healthy and viable myocardium, which is potentially reversibly damaged. The studied group with unstable angina pectoris consisted of 15 patiients (13 men, 2 women, 54,2 +- 9,3 ys; 10 patients NYHA class III-IV, 5 patients class IV), in which aorto-coronary by-pass graft surgery was carried out on the basis of angina pectoris, proved myocardial ischemia and results of coronary angiography. All patients were treated in the Clinic for Cardiovascular Surgery, Ljubljana Medical Center. Epicardial ECG was registered in the general anaesthesia immediately after pericardiotomy and one hour after myocardial revascularization and after extracorporeal circulation was discontinued. Medtronic's temporary Temptron type electrode with a special olive was employed for determination of electrical potentials. Electrical potentials from the epicardial surface were always registered at the same place before and after operation. The height of R and S waves were measured and Index K (R/R+S) was calculated before (K1) and after (K2) revascularization. By this approach we were able to achieve quantitative as well as qialitative data. Index K1 signifiacantly has been improved from 53,9 +- 15,9% to 75,5 +- 15,8% in Index K2 (p=0,0007, ranges 21-75% vs 53-93%). The segmental epicardial ECG during the open-heart surgery proved to be simple, save, prognosticaly useful for the operator. The significant improvement of Index K2 can be attributed to the favourable effects of reperfusion on the acute as well as chronic myocardial sichemia. | |
| Descriptors | ELECTROCARDIOGRAPHY MYOCARDIAL ISCHEMIA MYOCARDIAL REVASCULARIZATION EXTRACORPOREAL CIRCULATION CORONARY DISEASE MIDDLE AGE CORONARY ANGIOGRAPHY MYOCARDIAL INFARCTION CINERADIOGRAPHY INTRAOPERATIVE PERIOD VENTRICULAR FUNCTION, LEFT |