Left Ventricular Ejection Time in Atrial Fibrillation
Why the study?
How does left ventricular ejection time vary with cycle length in patients with atrial fibrillation compared to normal sinus rhythm?
Population
48 patients with atrial fibrillation (including patients with and without significant mitral stenosis)
Comparison
Measurement of left ventricular ejection time… vs Normal individuals in normal sinus rhythm
Design
Cross-sectional
Authors
Discussion
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Member takes
Implication
Ejection time in AF requires cycle-length plotting rather than NSR reference values; leaves open prospective validation and broader applicability.
Structured PICO
How does left ventricular ejection time vary with cycle length in patients with atrial fibrillation compared to normal sinus rhythm?
P
Population
48 patients with atrial fibrillation (including patients with and without significant mitral stenosis)
I
Intervention
Measurement of left ventricular ejection time (LVET) via indirect carotid pulse
C
Comparator
Normal individuals in normal sinus rhythm
O
Outcome
Left ventricular ejection time (LVET) across varying cycle lengthssurrogate
In patients with atrial fibrillation, left ventricular ejection time must be interpreted by plotting against cycle lengths, as data from normal sinus rhythm cannot be directly applied.
Cite This Study
Tavel et al. (1972) studied this question.