A new apparatus for detection of impending pacemaker failure in patients treated with implanted pacemakers

Rydén, Lars; Hedström, Per; Leijonhufvud, Sten

doi:10.1093/cvr/4.2.242

Cited by 8 publications

(2 citation statements)

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“…These tests were much more difficult to carry out by the oscilloscopic method. For further details see RydCn et al (23). There were no differences between measurements made in parallel with the oscilloscope and the pacemaker impulse analyser.…”

Section: Results and Comments Equipmentmentioning

confidence: 92%

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Functional Checking of Implanted Cardiac Pacemakers

Rydén

Thornander

1970

Journal of Internal Medicine

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Abstract. The present work introduces the results of oscilloscopic analysis of pacemaker impulse curves for pacemakers and electrodes of Elema‐Schönander type. The measuring method is described, and a few methodological studies are introduced. Comments are made on the checking of synchronous pacemakers. Values indicating impending pacemaker faults for the types of pacemakers used are presented. A material of 56 exchanged pacemakers is accounted for in detail. Seventeen of these pacemakers have been exchanged as a matter of routine after 18 months of service. Eleven of these 17 were intact, both as regards analysis before the exchange and as regards the checking of the pacemaker itself after explantation. Four pacemakers had to be exchanged owing to clinical symptoms of a defective stimulation. With the present values indicative of exchange one of these would have been exchanged in good time before the onset of the symptoms. In 31 cases the exchange has taken place because of a defective impulse curve, and none of these pacemakers had given any clinical symptoms of a stimulation fault. Only four of these 31 would have been revealed as defective if only pulse counting and ECG had been the basis of pacemaker checking. The reasons for premature failures in the pacemakers used are discussed. Different methods of pacemaker checking and different forms of the oscilloscopical analysis are brought up. The advantages of a checking method of the type used is pointed out and the article is concluded with some views on prospects regarding pacemaker checking.

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Section: Results and Comments Equipmentmentioning

confidence: 92%

“…Since February 1969 only the new apparatus has been employed. Detailed description of the pacemaker impulse analyser and special views concerning technique of measurement have been reported elsewhere (23).…”

Section: Methods Of Analysis Equipmentmentioning

confidence: 99%