Dynamics of Variation in Resistance of Chest Exposed to Gurvich–Venin Bipolar Defibrillation Pulse
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- Vostrikov, V.A., Gorbunov, B.B., Gusev, A.N. et al. Biomed Eng (2009) 43: 270. doi:10.1007/s10527-010-9139-z
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The dynamics of variation in the resistance of the chest (RC) exposed to a Gurvich–Venin bipolar defibrillation pulse was studied in five anesthetized pigs (body weight, 33-50 kg). During the first ∼2 msec of the first pulse phase, an increase in the current amplitude up to the amplitude value induced an approximately 16% (in the 10-22% range) decrease in the RC level. Any further effect of the pulse on RC was insignificant. The dynamics of variation in RC was mainly determined by processes in tissues exposed to the electrodes (skin, subcutaneous fat, skeletal muscles). A decrease in RC induces a proportional decrease in the effective discharge energy and damage to tissues located under the electrode.