Ventricular rate-adaptive pacing in the elderly
| Autor: | Carlos K. H. Wong, C.-P. Lau, Ping-Ching Fong, Felsa Lai-Wah Chung, John Po-Shan Li, Yau-Ting Tai |
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| Rok vydání: | 1992 |
| Předmět: |
Male
Pacemaker Artificial Ventricular rate medicine.medical_specialty Activities of daily living Blood Pressure law.invention Walking distance Double-Blind Method Stairs Heart Rate law Internal medicine Bradycardia Humans Medicine Aged Aged 80 and over business.industry Healthy subjects Blood pressure Electrocardiography Ambulatory Exercise Test Self care Cardiology Physical therapy Artificial cardiac pacemaker Female Cardiology and Cardiovascular Medicine business human activities Software |
| Zdroj: | European Heart Journal. 13:908-913 |
| ISSN: | 1522-9645 0195-668X |
| DOI: | 10.1093/oxfordjournals.eurheartj.a060291 |
| Popis: | The role of ventricular rate-adaptive pacing (VVIR) in the elderly was investigated in 12 patients with a mean age of 85 +/- 2 years (range 75-95 years) with implanted activity-initiated VVIR pacemakers. Although four patients had significant extracardiac diseases, all were capable of independent walking and self care. The pacing rate achieved during structured daily activities (walking, climbing stairs, washing, bed-making and scrubbing floors) were compared with those achieved by 10 age-matched healthy subjects. Apart from the more strenuous activities (ascending stairs and floor-scrubbing), the pacing rates achieved by the patients were comparable to those of the healthy subjects and occurred within an appropriate time. In a 4-weekly randomized, double-blind crossover protocol in the VVI and VVIR pacing modes, all patients underwent assessments in a 12-min walking distance test, a 24 h non-invasive ambulatory blood pressure recording and a symptomatic documentation. During VVIR pacing, the 12-min walking distance was significantly improved compared to VVI pacing (556 +/- 52 vs. 545 +/- 55 m, P less than 0.05). There was no difference between the recorded blood pressure and symptom scores between the two pacing modes, although most patients preferred VVIR pacing (P less than 0.05). It is concluded that VVIR pacing in this elderly population can improve exercise capacity, and the patients' preference for the VVIR mode was documented despite the absence of a measurable difference in symptomatology. |
| Databáze: | OpenAIRE |
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