ABSTRACT
AIM: To elucidate the role of evaluation of coronary reserve in coronary sinus by transesophageal doppler for assessment of efficacy of various revascularization interventions. MATERIAL AND METHODS: Patients with isolated stenoses of either left anterior descending or circumflex coronary artery subjected to stenting (n=14) and with two vessel disease subjected to bypass surgery (n=20). Dipyridamole was used as a stress agent. Coronary reserve was calculated as ratio of peak hyperemic to baseline antegrade coronary sinus blood flow velocity (CR(P)) and as ratio of hyperemic to baseline antegrade coronary sinus volume blood flow (CR(VBF)). RESULTS: In patients with atherosclerotic lesions in the system of left coronary artery normalization of CR(P) after stenting of single vessel stenoses and of CR(VBF) after bypass surgery in two vessel disease were markers of efficacy of revascularization with sensitivity 75 and 71%, respectively.
Subject(s)
Coronary Artery Bypass/methods , Coronary Vessels/diagnostic imaging , Echocardiography, Transesophageal/methods , Myocardial Ischemia/diagnostic imaging , Myocardial Ischemia/surgery , Ultrasonography, Doppler/methods , Coronary Vessels/physiopathology , Female , Humans , Male , Middle Aged , Myocardial Ischemia/physiopathologyABSTRACT
The efficiency of treatment of ventricular tachycardias and fibrillation in cardiologic and cardiac surgical practice was examined in 154 patients by employing new unique means and facilities for automatic cardioversion-defibrillation of the heart. A comparative analysis was made of the efficiency of prevention of ventricular fibrillation and arrest of ventricular tachycardias by using various electric cardiac stimulation. The investigations indicated ventricular arrhythmia deaths might be significantly reduced by applying various methods of electric pulse therapy. The differential use of ++anti-tachycardia cardiac pacing and automatic low-energy cardioversion-defibrillation decreases the number of complications and enhances the efficiency of therapy in this contingent of patients.
