What does this research mean for the field?

Transcutaneous aortovelography is a valid non-invasive technique for measuring proportional changes in stroke volume and peak blood flow velocity in the aortic arch, although it is inaccurate for calculating absolute flow values. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

May 1, 1976HeartOpen Access

Transcutaneous aortovelography. A quantitative evaluation.

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Why the study?

Does transcutaneous aortovelography accurately measure blood flow velocity and stroke volume compared to invasive techniques in patients undergoing cardiac catheterization?

Population

20 patients undergoing cardiac catheterization

Comparison

Transcutaneous aortovelography using a… vs Standard invasive techniques

Design

Cross-sectional

Authors

RSR F SequeiraBrigham and Women's Hospital LLLucia LightOntario HIV Treatment Network GCG CrossUnited States Department of the Army

Discussion

Member takes

Implication

Caution advised for absolute flow values clinically; leaves open proportional tracking pending prospective validation.

Structured PICO

Does transcutaneous aortovelography accurately measure blood flow velocity and stroke volume compared to invasive techniques in patients undergoing cardiac catheterization?

Population

20 patients undergoing cardiac catheterization

Intervention

Transcutaneous aortovelography using a haemotachograph (non-invasive ultrasonic Doppler-shift instrument)

Comparator

Standard invasive techniques (stroke volume determination and catheter tip electromagnetic velocity probe)

Outcome

Accuracy of transcutaneous aortovelographic values compared with stroke volume and peak velocitysurrogate

Transcutaneous aortovelography is a useful non-invasive technique for determining phasic blood flow velocity and tracking changes in cardiac output, despite poor accuracy for absolute flow values.

Cite This Study

Sequeira et al. (1976) studied this question.

synapsesocial.com/papers/6a16ac65798df06fa4b268e0 https://doi.org/10.1136/hrt.38.5.443

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May 1, 1976HeartOpen Access

Transcutaneous aortovelography. A quantitative evaluation.

View Full Paper

Ask AI

Bookmark

Why the study?

Does transcutaneous aortovelography accurately measure blood flow velocity and stroke volume compared to invasive techniques in patients undergoing cardiac catheterization?

Population

20 patients undergoing cardiac catheterization

Comparison

Transcutaneous aortovelography using a… vs Standard invasive techniques

Design

Cross-sectional

Authors

RSR F SequeiraBrigham and Women's Hospital LLLucia LightOntario HIV Treatment Network GCG CrossUnited States Department of the Army

Discussion

Member takes

Implication

Caution advised for absolute flow values clinically; leaves open proportional tracking pending prospective validation.

Structured PICO

Does transcutaneous aortovelography accurately measure blood flow velocity and stroke volume compared to invasive techniques in patients undergoing cardiac catheterization?

Population

20 patients undergoing cardiac catheterization

Intervention

Transcutaneous aortovelography using a haemotachograph (non-invasive ultrasonic Doppler-shift instrument)

Comparator

Standard invasive techniques (stroke volume determination and catheter tip electromagnetic velocity probe)

Outcome

Accuracy of transcutaneous aortovelographic values compared with stroke volume and peak velocitysurrogate

Transcutaneous aortovelography is a useful non-invasive technique for determining phasic blood flow velocity and tracking changes in cardiac output, despite poor accuracy for absolute flow values.

Cite This Study

Sequeira et al. (1976) studied this question.

synapsesocial.com/papers/6a16ac65798df06fa4b268e0 https://doi.org/10.1136/hrt.38.5.443

Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

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