The Transfer Functions of Cardiac Tissue during Stochastic Pacing
نویسندگان
چکیده
منابع مشابه
Heart failure during cardiac pacing.
BACKGROUND Right ventricular apical (RVA) pacing creates abnormal left ventricular contraction, hypertrophy, and reduced pump function. The adverse effects of ventricular desynchronization may explain the association of RVA pacing with an increased risk of heart failure hospitalization (HFH) in clinical trials. METHODS AND RESULTS Baseline and postimplantation variables were used to predict H...
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An electric pacemaker may, under certain circumstances, compete with an intrinsic cardiac rhythm and share control of the heart. Should an electric stimulus fall in the vulnerable phase of the ventricular cycle, potentially dangerous arrhythmias may be provoked (Sowton, 1965; Siddons and Sowton, 1967; Bilitch, Cosby, and Cafferky, 1967). " Ventricular-programmed " or " demand " pacemakers, whic...
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Heart rhythm during permanent cardiac pacing.
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In this study cardiac tissue is stimulated electrically through a small unipolar electrode. Numerical simulations predict that around an electrode are adjacent regions of depolarization and hyperpolarization. Experiments have shown that during pacing of resting cardiac tissue the hyperpolarization is often inhibited. Our goal is to determine if the inward rectifying potassium current (IK1) caus...
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ژورنال
عنوان ژورنال: Biophysical Journal
سال: 2009
ISSN: 0006-3495
DOI: 10.1016/j.bpj.2008.09.025