| Autor: |
Keelan, Edward T., Sra, Jasbir, Axtell, Kathi, Maglio, Cheryl, Bahl, Vinay K., Jazayeri, Mohammad R., Dhala, Anwer, Blanck, Zalmen, Deshpande, Sanjay, Biehl, Michael, Akhtar, Masood |
| Zdroj: |
Journal of the American College of Cardiology; February 1995, Vol. 25 Issue: 2, Number 2 Supplement 1 p279A-279A, 1p |
| Abstrakt: |
The effect of the polarity of the initial phase of a biphasic shock waveform on the defibrillation threshold (DFT) of cardioverter-defibrillators (ICDs) is not known. We tested this in two investigational pectorally implanted biphasic ICDs — Medtronic Models 7219C and 7219D PCD Jewel devices — in 22 consecutive patients (Pts). The 7219C has an “active can” and requires a single right ventricular (RV) lead while the 7219D requires RV and superior vena cava leads ± subcutaneous patch(es). The 7219C was implanted in 10 Pts and the 72190 in 12 Pts. Polarities were tested in random order. The results were:RV+*RV-*P value7219C DFT6.6+3.1J10.8+5.5J0.007Impedance59.3+8.8Ω60.3+7.0Ω0.337219D DFT12.0+4.0J16.3+7.3J0.07Impedance50.5+67Ω47.5+8.9Ω0.23*Refers to the polarity of the initial pulse deflection |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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