Nikola Gjorgov, MD, Frank Provenier, MD, Luc Jordaens, MD

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Presentation transcript:

Low-energy intracardiac shocks during atrial fibrillation: Effects on cardiac rhythm Nikola Gjorgov, MD, Frank Provenier, MD, Luc Jordaens, MD American Heart Journal Volume 133, Issue 1, Pages 101-107 (January 1997) DOI: 10.1016/S0002-8703(97)70254-0 Copyright © 1997 Mosby, Inc. Terms and Conditions

Fig. 1 Usual position on anteroposterior radiograph of right atrial and coronary sinus shock catheters. American Heart Journal 1997 133, 101-107DOI: (10.1016/S0002-8703(97)70254-0) Copyright © 1997 Mosby, Inc. Terms and Conditions

Fig. 2 Left atrial size in relation to voltage conversion level. Filled squares , individual shocks. American Heart Journal 1997 133, 101-107DOI: (10.1016/S0002-8703(97)70254-0) Copyright © 1997 Mosby, Inc. Terms and Conditions

Fig. 3 Test shock level (20 V) with mean R-R intervals of all patients, from tenth to first interval before shock (arrow) and from first to tenth interval after shock. American Heart Journal 1997 133, 101-107DOI: (10.1016/S0002-8703(97)70254-0) Copyright © 1997 Mosby, Inc. Terms and Conditions

Fig. 4 Shock of 260 V synchronized with R wave in 55-year-old man resulted in ventricular pause of 1650 msec without conversion of atrial arrhythmia. Subsequent intervals are comparable to intervals before shock (paper speed, 50 mm/sec). American Heart Journal 1997 133, 101-107DOI: (10.1016/S0002-8703(97)70254-0) Copyright © 1997 Mosby, Inc. Terms and Conditions

Fig. 5 Prolongation of mean first postshock interval at 300 V level compared with other intervals and compared with 20 V level. American Heart Journal 1997 133, 101-107DOI: (10.1016/S0002-8703(97)70254-0) Copyright © 1997 Mosby, Inc. Terms and Conditions

Fig. 6 Correlation between mean noneffective first postshock R-R intervals and corresponding voltage levels. American Heart Journal 1997 133, 101-107DOI: (10.1016/S0002-8703(97)70254-0) Copyright © 1997 Mosby, Inc. Terms and Conditions

Fig. 7 Correlation between maximal recorded R-R interval (noneffective shocks) after shocks for every level. PSI , Postshock interval. American Heart Journal 1997 133, 101-107DOI: (10.1016/S0002-8703(97)70254-0) Copyright © 1997 Mosby, Inc. Terms and Conditions