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Variability of Left Atrial Bloodflow Predicts Intolerance of Ventricular Demand Pacing and May Cause Pacemaker Syndrome
Author(s) -
SULKE NEIL,
CHAMBERS JOHN,
SOWTON EDGAR
Publication year - 1994
Publication title -
pacing and clinical electrophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.686
H-Index - 101
eISSN - 1540-8159
pISSN - 0147-8389
DOI - 10.1111/j.1540-8159.1994.tb01473.x
Subject(s) - medicine , cardiology , hemodynamics , ventricular pacing , doppler echocardiography , heart failure , diastole , blood pressure
Variability of left and right atrial and left ventncular bloodflow was studied using transthoracic and transesophageal Doppler echocardiography and related to pacemaker mode preference during everyday activity. Bloodflow variability was less at all sites during dual chamber pacing compared to single chamber pacing. However, in patients suffering from pacemaker syndrome and whom prefer DDDR pacing, significantly increased variability of left atrial antegrade (but not retrograde) bloodflow during VVIR pacing compared to DDDR pacing was noted, which was not evident in patients tolerating VVIR mode pacing. This effect was not detected at any other site and suggests that adverse left atrial hemodynamics may result in intolerence to VVI/R mode pacing and might cause pacemaker syndrome.