Acute changes in pacing threshold and R- or P-wave amplitude during permanent pacemaker implantation
dc.contributor.author | De Buitleir, Michael | en_US |
dc.contributor.author | Kou, William H. | en_US |
dc.contributor.author | Schmaltz, Stephen P. | en_US |
dc.contributor.author | Morady, Fred | en_US |
dc.date.accessioned | 2006-04-10T13:45:55Z | |
dc.date.available | 2006-04-10T13:45:55Z | |
dc.date.issued | 1990-04-15 | en_US |
dc.identifier.citation | de Buitleir, Michael, Kou, William H., Schmaltz, Stephen, Morady, Fred (1990/04/15)."Acute changes in pacing threshold and R- or P-wave amplitude during permanent pacemaker implantation." The American Journal of Cardiology 65(15): 999-1003. <http://hdl.handle.net/2027.42/28618> | en_US |
dc.identifier.uri | http://www.sciencedirect.com/science/article/B6T10-4C7VH97-DJ/2/2430a4e5b0c7f816ed904cc6a230ac71 | en_US |
dc.identifier.uri | https://hdl.handle.net/2027.42/28618 | |
dc.identifier.uri | http://www.ncbi.nlm.nih.gov/sites/entrez?cmd=retrieve&db=pubmed&list_uids=2327362&dopt=citation | en_US |
dc.description.abstract | This study examines the changes in pacing threshold and R- or P-wave amplitude during the first 30 minutes after implantation of tined and screw-in leads. The leads examined were those of 1 manufacturer (Medtronic) and consisted of 3 ventricular pacing leads (model numbers 6957 unipolar screwin [11 patients], 6961 unipolar tined [12 patients] and 6962 bipolar tined [7 patients]) and 1 atrial lead (model number 6957J unipolar screw-in [10 patients]). After optimal lead position was obtained fluoroscopically in the right ventricular apex or right atrium, the pacing threshold and R- or P-wave amplitudes were measured at 5-minute intervals for 30 minutes.The acute ventricular pacing threshold with the screw-in lead was significantly higher than with the tined lead (0.84 +/- 0.17 vs 0.58 +/- 0.15 volts; p < 0.001). There was a significant (p < 0.001) acute decrease in the ventricular pacing threshold with both lead types, with the maximum decrease occurring 5 minutes after lead implantation. There was a significant acute increase in R-wave size with the ventricular screw-in lead that peaked 20 minutes after lead implantation (11.9 +/- 3.0 to 14.7 +/- 4.1 mV; p < 0.001). The atrial screw-in lead behaved in a manner identical to its counterpart in the ventricle. In conclusion, there are acute changes in the pacing threshold and R- or P-wave amplitude obtained with tined and screw-in pacing leads. In some patients, a pacing threshold or R- or P-wave amplitude that is initially unacceptable may improve to an acceptable level over 15 to 20 minutes without further lead manipulation, especially when an atrial screw-in lead is used. | en_US |
dc.format.extent | 554167 bytes | |
dc.format.extent | 3118 bytes | |
dc.format.mimetype | application/pdf | |
dc.format.mimetype | text/plain | |
dc.language.iso | en_US | |
dc.publisher | Elsevier | en_US |
dc.title | Acute changes in pacing threshold and R- or P-wave amplitude during permanent pacemaker implantation | en_US |
dc.type | Article | en_US |
dc.rights.robots | IndexNoFollow | en_US |
dc.subject.hlbsecondlevel | Internal Medicine and Specialties | en_US |
dc.subject.hlbtoplevel | Health Sciences | en_US |
dc.description.peerreviewed | Peer Reviewed | en_US |
dc.contributor.affiliationum | Department of Internal Medicine, Division of Cardiology, and the Clinical Research Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA | en_US |
dc.contributor.affiliationum | Department of Internal Medicine, Division of Cardiology, and the Clinical Research Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA | en_US |
dc.contributor.affiliationum | Department of Internal Medicine, Division of Cardiology, and the Clinical Research Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA | en_US |
dc.contributor.affiliationum | Department of Internal Medicine, Division of Cardiology, and the Clinical Research Center, University of Michigan Medical Center, Ann Arbor, Michigan, USA | en_US |
dc.identifier.pmid | 2327362 | en_US |
dc.description.bitstreamurl | http://deepblue.lib.umich.edu/bitstream/2027.42/28618/1/0000430.pdf | en_US |
dc.identifier.doi | http://dx.doi.org/10.1016/0002-9149(90)91003-O | en_US |
dc.identifier.source | The American Journal of Cardiology | en_US |
dc.owningcollname | Interdisciplinary and Peer-Reviewed |
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