What question did this study set out to answer?

To assess the accuracy and tissue safety of measuring left ventricular stroke volume using three-dimensional reconstructions from a transesophageal phased array ultrasonic probe.

March 1, 1989Anesthesiology

Measurement of Stroke Volume with Three-dimensional Transesophageal Ultrasonic Scanning

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Authors

RMRoy W. MartinEnvironmental Protection Agency GBG. BasheinUnited States Department of Veterans Affairs

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Implication

New 3D TEE probe accurately measures stroke volume in dogs; leaves open human validation and clinical translation.

Key Points

To assess the accuracy and tissue safety of measuring left ventricular stroke volume using three-dimensional reconstructions from a transesophageal phased array ultrasonic probe.
Tested a transesophageal ultrasonic probe in 10 dogs, scanning serial cross-sections of the entire left ventricular cavity at end-expiration.
Reconstructed three-dimensional left ventricular volumes off-line at end-diastole and end-systole to compute stroke volume across varying hemodynamic states.
Compared 57 ultrasonic determinations against thermodilution measurements using least-squares linear regression and performed histologic examinations of the esophagus in 9 dogs.
Ultrasonic stroke volume strongly correlated with thermodilution across 57 determinations, yielding a regression slope of 0.95 (95% CI, 0.842–1.06), an intercept of 2.1 ml (95% CI, 2.0–2.2), a standard error of the estimate of 4.1 ml, and a correlation coefficient of 0.92 (95% CI, 0.87–0.95).
Histologic evaluation of the esophagus surrounding the probe tip in 9 dogs revealed minimal injury, with 8 specimens appearing normal and 1 showing mild inflammation.

Cite This Study

Martin et al. (1989) studied this question.

synapsesocial.com/papers/6a8be752210b9ed19c8985ac https://doi.org/10.1097/00000542-198903000-00017

Topics

Echocardiography

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Measurement of Stroke Volume with Three-dimensional Transesophageal Ultrasonic Scanning

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Cite This Study

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Measurement of Stroke Volume with Three-dimensional Transesophageal Ultrasonic Scanning

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Member takes

Implication

Key Points

Cite This Study

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