Determinants of Nonthoracotomy Biphasic Defihrillation
| Autor: | Michael E. Jessen, Carlos A. Román, Rodney P. Horton, Michael L. Hull, Susan A. Kaye, Richard L. Page, Robert C. Canby |
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| Rok vydání: | 1997 |
| Předmět: |
Male
inorganic chemicals medicine.medical_specialty Clinical variables Heart Diseases Body Surface Area Surface Properties Defibrillation medicine.medical_treatment Electric Countershock Amiodarone Ventricular Function Left Defibrillation threshold Sex Factors Internal medicine Humans Medicine Lead (electronics) Body surface area Ejection fraction business.industry Age Factors Arrhythmias Cardiac Stroke Volume Regression analysis Equipment Design General Medicine Middle Aged Implantable cardioverter-defibrillator medicine.disease Electric Stimulation Defibrillators Implantable Electrodes Implanted Thoracotomy Cardiology Regression Analysis Female Medical emergency Cardiology and Cardiovascular Medicine business Anti-Arrhythmia Agents Forecasting |
| Zdroj: | Pacing and Clinical Electrophysiology. 20:60-64 |
| ISSN: | 1540-8159 0147-8389 |
| DOI: | 10.1111/j.1540-8159.1997.tb04812.x |
| Popis: | The clinical variables affecting DFT for ICD systems are not completely determined, especially with regard to biphasic shocking devices. To distinguish which factors correlate with DFT, we examined data from patients who were enrolled in the Ventak P2/Endotak protocol. A total of 284 patients were enrolled in the study. Two patients had a DFT > 25 J and did not receive the device; 154 did not undergo stepdown to failure DFT testing. The remaining 128 patients had formal DFT testing and were suitable for analysis. Variables available for analysis included age, body surface area (BSA), LVEF, gender, lead configuration, primary arrhythmia, primary cardiac disease, and use of cardioactive medication. Data were evaluated using regression analysis, fitting DFT (range, 1-25 J, mean 11 +/- 5 J) as a function of each variable. As a univariate predictor. BSA was found to be significant in predicting DFT, but accounted for only 9% of the total variation on the DFT (P < 0.01, r = 0.3). This study suggests that DFT using a biphasic shocking waveform is modestly in fluenced by the BSA of the patient. Other specific factors, including LVEF, do not predict DFT. |
| Databáze: | OpenAIRE |
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