What question did this study set out to answer?

Q: What question did this study set out to answer?

To evaluate the variability and reproducibility of digitized echocardiographic measurements of left ventricular function and assess physiological influences.

October 1, 1987Clinical Physiology

Digitized echocardiographic measurements of left ventricular function: reproducibility and physiological factors influencing the method

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Why the study?

What is the reproducibility of digitized M-mode echocardiographic measurements of left ventricular function and what physiological factors influence them in healthy subjects?

Population

28 relatively young (<50 years) healthy subjects with normal heart rates

Design

Cross-sectional

Authors

RDRagnar DaníelsenCardiac Imaging JNJ. E. NordrehaugUniversity of Bergen HVHarald Vik‐MoDeborah Heart and Lung Center

Discussion

Member takes

Implication

Acceptable reproducibility supports digitized M-mode use in healthy subjects; leaves open validation across ages, heart rates, and cardiac disease.

Key Points

To evaluate the variability and reproducibility of digitized echocardiographic measurements of left ventricular function and assess physiological influences.
Studied 28 young healthy subjects (under 50 years) with normal heart rates.
Standardized echocardiographic recordings during end-expiratory phase.
Analyzed variability using coefficients of variation for various echocardiographic measures.
Coefficients of variation for direct echocardiographic measurements were ≤6% and ≤15% for digitized variables.
Peak shortening rate showed best reproducibility during systole.
Age and heart rate influenced systolic but not diastolic echocardiographic variables.

Structured PICO

What is the reproducibility of digitized M-mode echocardiographic measurements of left ventricular function and what physiological factors influence them in healthy subjects?

Population

28 relatively young (<50 years) healthy subjects with normal heart rates

Intervention

Digitized M-mode echocardiographic measurements

Outcome

Variability/reproducibility of digitized M-mode echocardiographic measurements (coefficients of variation)surrogate

Digitized M-mode echocardiographic measurements show acceptable reproducibility, though systolic variables are influenced by age and heart rate.

Cite This Study

Daníelsen et al. (1987) studied this question.

synapsesocial.com/papers/6a6ff5e4a7fbea1e4407e6cf https://doi.org/10.1111/j.1475-097x.1987.tb00183.x

Topics

Echocardiography

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Implication

Acceptable reproducibility supports digitized M-mode use in healthy subjects; leaves open validation across ages, heart rates, and cardiac disease.

Digitized echocardiographic measurements of left ventricular function: reproducibility and physiological factors influencing the method

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Topics

Digitized echocardiographic measurements of left ventricular function: reproducibility and physiological factors influencing the method

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Also Consider

Topics

Also Consider