PMID: 9525054Apr 3, 1998Paper

Is the response to cardiac pacing controlled by central venous temperature physiological?

Bratislavské lekárske listy
M NovákF Stanĕk

Abstract

Rate responsive cardiac pacemakers are capable of adapting their pacing rate according to metabolic demands in the physical effort and some of the sensors in use even according to such physiological stimuli in which the level of metabolism remains unchanged. Central blood temperature (CVT) could possibly represent a much-needed and searched ideal sensor, which truly reflects physiological processes. In order to verify the response of the thermistor sensor under various physiological conditions, 10 single-chamber VVIR pacemakers Thermos M 02 (Biotronik) were implanted since 1993 through 1995. Our group of patients consisted of 9 men and 1 women. 8 patients had chronic atrial fibrillation with bradycardia and ventricular chronotropic incompetence, 2 patients suffered from the 3rd degree atrioventricular block. The mean age at the time of implant was 62.4 (52-72) years, the mean follow-up period has amounted to 23 (2-32) months. The CVT response to physical exercise was proportional and smooth, especially in the strenuous physical effort. In contrast to some other sensors, CVT exhibited the physiological reaction also in situations in which the metabolic level did not change. It displayed a physiological circadian fluctuation of t...Continue Reading

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