Abstract
An 84-year-old female patient presented to the coronary care unit with dizziness. A DDD-R minute ventilation sensor pacemaker had been implanted eight years previously. The ECG showed an atrial and ventricular paced rhythm of 140 beats/min. After disconnecting the patient from the cardiac monitor the pacemaker rate dropped gradually to 90 beats/min. The cardiac rhythm monitoring system applies low-amplitude electrical pulses in order to measure respiration rate by transthoracic impedance (TTI) measurement. The minute ventilation pacemaker sensor is driven by the same TTI measurement for rate response. Inappropriate interference between these two systems caused a sensor-driven high pacemaker rate. The dizziness was not related to the sensor-driven high rate.
Keywords: minute ventilation rate-adaptive pacemaker, cardiac monitoring
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- Chew E. W., Troughear R. H., Kuchar D. L., Thorburn C. W. Inappropriate rate change in minute ventilation rate responsive pacemakers due to interference by cardiac monitors. Pacing Clin Electrophysiol. 1997 Feb;20(2 Pt 1):276–282. doi: 10.1111/j.1540-8159.1997.tb06171.x. [DOI] [PubMed] [Google Scholar]
- Mond H., Strathmore N., Kertes P., Hunt D., Baker G. Rate responsive pacing using a minute ventilation sensor. Pacing Clin Electrophysiol. 1988 Nov;11(11 Pt 2):1866–1874. doi: 10.1111/j.1540-8159.1988.tb06322.x. [DOI] [PubMed] [Google Scholar]
- Southorn P. A., Kamath G. S., Vasdev G. M., Hayes D. L. Monitoring equipment induced tachycardia in patients with minute ventilation rate-responsive pacemakers. Br J Anaesth. 2000 Apr;84(4):508–509. doi: 10.1093/oxfordjournals.bja.a013480. [DOI] [PubMed] [Google Scholar]
- Walldén J., Gupta A., Carlsén H. O. Supraventricular tachycardia induced by Datex patient monitoring system. Anesth Analg. 1998 Jun;86(6):1339–1339. doi: 10.1097/00000539-199806000-00055. [DOI] [PubMed] [Google Scholar]
- van Gelder B. M., Bracke F. A., el Gamal M. I. Upper rate pacing after radiofrequency catheter ablation in a minute ventilation rate adaptive DDD pacemaker. Pacing Clin Electrophysiol. 1994 Aug;17(8):1437–1440. doi: 10.1111/j.1540-8159.1994.tb02464.x. [DOI] [PubMed] [Google Scholar]