Heart rate variability during the first month of smoking cessation - 09/09/11
Abstract |
Background: Heart rate variability (HRV) is known to increase after smoking cessation. However, no work has been performed concerning HRV immediately after smoking cessation. Methods and Results: We studied HRV before and from 1 day to 1 month after smoking cessation and also determined whether there is a relation between HRV and the withdrawal syndrome immediately after smoking cessation. We determined HRV by using a two-channel 24-hour ambulatory ECG system before and 1, 2, 3, 7, 14, 21, and 28 days after smoking cessation in 20 healthy male volunteers who had smoked one or more packs per day for 2 or more years. One day after smoking cessation, heart rate decreased significantly, and all 24-hour time and frequency domain indices of HRV increased except the standard deviations of the normal R-R intervals and the 5-minute mean R-R. The magnitude of increase in these indices peaked 2 to 7 days after smoking cessation and gradually decreased thereafter. The increase in HRV persisted 1 month after smoking cessation. In the 16 subjects with signs of withdrawal syndrome and in the four subjects without evidence of withdrawal before and immediately and 1 month after smoking cessation, HRV increased immediately after smoking cessation and remained elevated after 1 month. Conclusions: HRV increases immediately after smoking cessation and gradually declines thereafter, which suggests that the effect of smoking on autonomic activity rapidly disappears immediately after smoking cessation. HRV remained unaffected by the presence or absence of the withdrawal syndrome. (Am Heart J 1998;135:1004-9.)
Le texte complet de cet article est disponible en PDF.Plan
 | From Kyorin University School of Medicine. |
| Reprint requests: Kyozo Ishikawa, MD, Second Department of Internal Medicine, School of Medicine, Kyorin University, 6-20-2 Shinkawa, Mitaka, Tokyo 181, Japan. |
 | 4/1/88963 |
Vol 135 - N° 6
P. 1004-1009 - juin 1998 Retour au numéro
Article précédent
- Quantification of the aortic valve area in three-dimensional echocardiographic data sets: Analysis of orifice overestimation resulting from suboptimal cut-plane selection
- Jaroslaw D. Kasprzak, Youssef F.M. Nosir, Anita Dall'Agata, Abdou Elhendy, Meindert Taams, Folkert J. Ten Cate, Jos R.T.C. Roelandt
- Analysis of the cardiac rhythm preceding episodes of paroxysmal atrial fibrillation
- Katerina Hnatkova, Johan E.P. Waktare, Francis D. Murgatroyd, Xiaohua Guo, Xie Baiyan, A.John Camm, Marek Malik
Bienvenue sur EM-consulte, la référence des professionnels de santé.
L’accès au texte intégral de cet article nécessite un abonnement.
Déjà abonné à cette revue ?