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The thorax impedance (TI) was measured in 230 patients with atrial and ventricular rhythm impairments according to L. Geddes et al. Gauze napkins moistened in physiological solution (PS) and in 7% hypertonic solution NaCl (HS) were used as contact material. The electrode diameter was approx. 12 cm. The use of HS was shown to bring about a TI decrease by 21%(More)
The efficacy of low-energy bipolar pulse is studied in 41 patients with sudden heart arrest caused by ventricular fibrillation (VF). Maximal energy of effective charges during defibrillation of patients with or without acute myocardial infarction and primary VF (30 episodes) was only 90 J x 1-2. For eliminating secondary VF (76 episodes), maximal energy of(More)
Efficacy of external defibrillation of the heart with low energy (</=65-195 J) bipolar quasi sinusoidal discharges was studied in 76 patients with induced, primary (overall 70 episodes), and secondary (88 episodes) ventricular fibrillation (VF) and hemodynamically unstable ventricular tachycardia (VT) with or without acute myocardial infarction. Maximal(More)
Two widely used forms of defibrillating pulse were compared in experiments on narcotized dogs weighing 7 to 39 kg. Gurvich quasisinusoidal bipolar pulse was found to be much more effective than Edmark's critically dampered sinusoidal monopolar pulse. A close direct correlation between body weight (m) and threshold values of current (I) was found(More)
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