HOME SUBSCRIPTIONS CURRENT ISSUE PAST ISSUES CARDIOSOURCE SEARCH HELP FEEDBACK		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Abstract Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Nahlawi, M. Articles by Goldberger, J. J. Search for Related Content PubMed PubMed Citation Articles by Nahlawi, M. Articles by Goldberger, J. J.

Left ventricular function during and after right ventricular pacing

Division of Cardiology, Department of Medicine, Northwestern University, Chicago, Illinois, USA

View larger version (11K): [in a new window]   Figure 1 Time line depicting study protocol. Electrocardiograms, blood pressure, and gated blood pool scans were obtained at each time point indicated by the vertical arrows. Between studies, pacemakers were programmed to result in either normal atrioventricular (AV) conduction (AAI) or ventricular pacing (DDD mode with short AV delay), as indicated by the programmed mode. The mode during testing is indicated on top. MTVP = mid-term ventricular pacing for at least one week; STVP = short-term ventricular pacing for 2 h.

View larger version (23K): [in a new window]   Figure 2 Plot of individual values of left ventricular ejection fraction obtained at the baseline evaluation after at least one week of atrial pacing with normal atrioventricular conduction (BASE), during short-term (after 2 h) ventricular pacing (STVP), and during mid-term (after at least one week) ventricular pacing (MTVP).

View larger version (24K): [in a new window]   Figure 3 Plot of individual values of left ventricular ejection fraction obtained at the baseline evaluation after at least one week of atrial pacing with normal atrioventricular conduction (BASE), during mid-term (after at least one week) ventricular pacing (MTVP), and immediately after cessation of MTVP (immediately post-MTVP).

View larger version (18K): [in a new window]   Figure 4 Plot of mean ± SD values of left ventricular ejection fraction obtained in all 12 subjects at the baseline evaluation after at least one week of atrial pacing with normal atrioventricular conduction (BASE), during mid-term (after at least one week) ventricular pacing (MTVP), and 0, 2, 5, 8, 24, and 32 h after cessation of MTVP. *p < 0.007 compared with BASE; p < 0.02 compared with 0 h after cessation of ventricular pacing.