Surgery – Truss – Pad
Patent
1990-08-23
1992-04-21
Kamm, William E.
Surgery
Truss
Pad
128697, A61N 139
Patent
active
051058090
ABSTRACT:
A system for determining the defibrillation threshold energy of a defibrillation lead arrangement by shocking the heart during the T wave of the ECG at decreasing energy levels until the heart is placed in fibrillation. The lowest energy level tested which fails to place the heart in fibrillation correlates to the defibrillation threshold energy of the lead arrangement.
REFERENCES:
Hoffman et al., "Vulnerability to Fibrillation and the Ventricular-Excitability Curve", 88-94, American Journal of Physiology, Oct. 1951, vol. 167.
Han, "Ventricular Vulnerability to Fibrillation", 87-95, In: Dreifus, Lihoff, editors: Cardiac Arrhythmias, NY 1973, Grune & Stratton, Inc.
Wiggers et al., "Ventricular Fibrillation Due to Single, Localized Induction and Condenser Shocks Applied During the Vulnerable Phase of Ventricular Systole", 500-505, American Journal of Physiology, 1940, vol. 128.
Chen et al., "Comparison of the Defibrillation Threshold and the Upper Limit of Ventricular Vulnerability", 1022-1028, Circulation, 1986, vol. 73.
Bach, Jr. Stanley M.
Ideker Raymond E.
Lang Douglas J.
Wharton J. Marcus
Cardiac Pacemakers Inc.
Duke University
Getzow Scott M.
Kamm William E.
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