What does this research mean for the field?

Left ventricular ejection time (LVET) increases slightly but significantly with aging, independent of heart rate and blood pressure, and differs significantly between sexes. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate left ventricular ejection time in elderly individuals and determine the influence of age, sex, heart rate, and blood pressure on cardiac timing.

July 1, 1970CirculationOpen Access

The Left Ventricular Ejection Time in Elderly Subjects

View Full Paper

Ask AI

Bookmark

Why the study?

How does left ventricular ejection time (LVET) change with aging in elderly subjects?

Population

512 elderly subjects (205 male and 307 female) aged between 60 and 90 years (mean age, 70.5 years)

Comparison

Measurement of left ventricular ejection time… vs Previously reported results concerning young and…

Design

Cross-sectional

Authors

JWJOS L. WILLEMSDepartment of Public Health JRJ. RoelandtErasmus University Rotterdam HGHilaire De GeestBoston University

Discussion

Member takes

Implication

LVET may increase modestly with aging in elderly independent of HR and BP; extends younger adult observations but leaves clinical relevance open.

Key Points

To evaluate left ventricular ejection time in elderly individuals and determine the influence of age, sex, heart rate, and blood pressure on cardiac timing.
Measured left ventricular ejection time (LVET) using carotid artery tracing in 512 elderly subjects (205 males, 307 females; aged 60–90 years, mean age 70.5 years).
Compared findings to historical adult cohorts and performed multiple regression analysis controlling for heart rate and blood pressure.
Found a highly significant correlation between heart rate and left ventricular ejection time.
Identified a small but statistically significant increase in LVET with advancing age, independent of heart rate and blood pressure.
Observed a statistically significant difference in LVET between sexes, while non-heart-rate physiological variables exerted minimal influence.

Structured PICO

How does left ventricular ejection time (LVET) change with aging in elderly subjects?

Population

512 elderly subjects (205 male and 307 female) aged between 60 and 90 years (mean age, 70.5 years)

Intervention

Measurement of left ventricular ejection time (LVET) via carotid artery tracing

Comparator

Previously reported results concerning young and middle-aged adults

Outcome

Left ventricular ejection time (LVET) and its correlation with heart rate and agingsurrogate

Left ventricular ejection time shows a small but significant increase with aging, independent of heart rate and blood pressure, in elderly subjects.

Cite This Study

WILLEMS et al. (1970) studied this question.

synapsesocial.com/papers/6a1736635498a92aabbdec2e https://doi.org/10.1161/01.cir.42.1.37

View Full Paper

Ask AI

Bookmark

Implication

LVET may increase modestly with aging in elderly independent of HR and BP; extends younger adult observations but leaves clinical relevance open.

The Left Ventricular Ejection Time in Elderly Subjects

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

The Left Ventricular Ejection Time in Elderly Subjects

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Also Consider