What does this research mean for the field?

The postextrasystolic change in the ratio of preejection period to left ventricular ejection time (PEP/ET) strongly correlates with changes in global ejection fraction, allowing it to be used as a measure of left ventricular residual function in patients with coronary artery disease and dilated cardiomyopathy. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

January 1, 1986Japanese Heart JournalOpen Access

Evaluation of left ventricular residual function using postextrasystolic potentiation. Relation between systolic time intervals and angiographic study.

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Why the study?

Does postextrasystolic potentiation (PESP) change systolic time intervals and left ventricular ejection fraction in patients undergoing cardiac catheterization?

Population

n=20 patients undergoing diagnostic cardiac catheterization

Comparison

Postextrasystolic potentiation induced by a… vs Baseline normal sinus beats

Design

Cohort

Authors

MYMasaru YamazoeFuji Electric (Japan)YHYumiko HoshinoUtsunomiya University TTTetsuro ToedaNiigata City General Hospital

Discussion

Member takes

Implication

May support PESP for assessing LV residual function during catheterization; hypothesis-generating and should not yet change practice.

Structured PICO

Does postextrasystolic potentiation (PESP) change systolic time intervals and left ventricular ejection fraction in patients undergoing cardiac catheterization?

Population

n=20 patients undergoing diagnostic cardiac catheterization (4 normal individuals, 11 with coronary artery disease, 5 with idiopathic dilated cardiomyopathy)

Intervention

Postextrasystolic potentiation (PESP) induced by a single ventricular premature beat using an R-wave coupled stimulator during left ventriculography

Comparator

Baseline normal sinus beats

Outcome

Changes in the ratio of preejection period to left ventricular ejection time (PEP/ET) and left ventricular ejection fraction (EF)surrogate

Postextrasystolic changes in the PEP/ET ratio strongly correlate with changes in global ejection fraction, allowing for the determination of left ventricular residual function.

Cite This Study

Yamazoe et al. (1986) studied this question.

synapsesocial.com/papers/6a1d3045ba65f5ee325df6f7 https://doi.org/10.1536/ihj.27.797

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Evaluation of left ventricular residual function using postextrasystolic potentiation. Relation between systolic time intervals and angiographic study.

Discussion

Member takes

Implication

Structured PICO

Cite This Study

Evaluation of left ventricular residual function using postextrasystolic potentiation. Relation between systolic time intervals and angiographic study.

Discussion

Member takes

Implication

Structured PICO

Cite This Study

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