| Single-lead VDD pacing system. | |
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MedLine Citation:
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PMID: 1695356 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A single pass ventricular lead with a dual chamber electrode system, designed for VDD pacing, was implanted in 17 patients (11 men, 6 women, aged 53 to 86 years, mean 74) for symptomatic bradycardia due to second-or third-degree AV block and normal sinus node function. Bipolar atrial electrodes, diagonally displaced along the lead axis and positioned within the right atrial cavity, are used to detect atrial activity that is then differentially processed within the pacemaker. P wave amplitude (amp) derived from a PSA-DAA device at implant was 1.38 +/- 0.28 mV. P wave signal amp derived from telemetered atrial electrograms was 1.29 +/- 0.22 mV at predischarge (n = 17), 1.31 +/- 0.24 mV at 3 months (n = 15), 1.30 +/- 0.24 mV at 6 months (n = 8), 1.51 +/- 0.34 mV at 9 months (n = 4), and 1.35 +/- 0.35 mV at 12 months (n = 2); and the far-field QRS signal measured at predischarge was of negligible voltage (0.17 +/- 0.07 mV). The susceptibility of the atrial sensor system to interference was noted with chest wall stimulation and only at higher sensitivities (0.1 to 0.3 mV) and not with isometric arm exercise. Intact VDD pacing function at rest and during exercise was established using Holter and periodic ECG monitoring. Postoperative complications included one lead displacement and one pocket hematoma. Three patients died postimplant of causes unrelated to pacemaker function. Advantages of the single-lead VDD pacing include: (1) elimination of second atrial sensing lead; (2) superior atrial sensing performance; (3) effective resistance to myopotential and far-field signal interference; and (4) stability of postimplant atrial signal amplitude. |
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Authors:
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P Varriale; A G Pilla; M Tekriwal |
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Publication Detail:
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Type: Comment; Journal Article |
Journal Detail:
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Title: Pacing and clinical electrophysiology : PACE Volume: 13 ISSN: 0147-8389 ISO Abbreviation: Pacing Clin Electrophysiol Publication Date: 1990 Jun |
Date Detail:
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Created Date: 1990-08-23 Completed Date: 1990-08-23 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 7803944 Medline TA: Pacing Clin Electrophysiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 757-66 Citation Subset: IM |
Affiliation:
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Division of Cardiology, Cabrini Medical Center, New York, New York 10003. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aged, 80 and over Bradycardia / etiology, therapy* Cardiac Pacing, Artificial / methods* Electrocardiography, Ambulatory Electrodes, Implanted Equipment Design Exercise / physiology Female Follow-Up Studies Heart Block / complications Humans Male Middle Aged Pacemaker, Artificial* Time Factors |
| Comments/Corrections | |
Comment On:
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Pacing Clin Electrophysiol. 1990 Dec;13(12 Pt 1):1686
[PMID:
1704524
]
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Comment In:
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Pacing Clin Electrophysiol. 1990 Dec;13(12 Pt 1):1686
[PMID:
1704524
]
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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