What does this research mean for the field?

A Fourier analysis method using simultaneous in vivo measurements of pressure, diameter, flow, and differential pressure can reliably determine the true phase velocity of arterial pressure waves, revealing that phase velocity is constant above 35 rad/sec but decreases rapidly at lower frequencies. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.SUPPORTS_CONSENSUS.

October 1, 1971Circulation ResearchOpen Access

Determination of the True Phase Velocity of Arterial Pressure Waves in Vivo

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Population

Anesthetized dogs (femoral artery)

Comparison

Fourier analysis of simultaneously recorded… vs Theoretical wave propagation model

Design

Preclinical

Authors

RCR. H. CoxTexas Tech University

Discussion

Member takes

Implication

Animal validation supports Fourier analysis for in vivo phase velocity; extends theoretical models but leaves human translation open.

Key Points

The aim is to determine the true phase velocity of arterial pressure waves using in vivo measurements.
Simultaneous recording of pressure, diameter, flow, and differential pressure from the femoral artery of anesthetized dogs.
Application of Fourier analysis to assess pressure propagation.
Analysis focused on frequency variations of phase velocity.
Experimental phase velocity values aligned with theoretical model predictions.
Phase velocity remained constant for frequencies above 35 rad/sec, but decreased rapidly below 20 rad/sec.
Local fluid impedance values were significantly lower than characteristic impedance at high frequencies above 50 rad/sec.

Structured PICO

Population

Anesthetized dogs (femoral artery)

Intervention

Fourier analysis of simultaneously recorded pressure, diameter, flow, and differential pressure

Comparator

Theoretical wave propagation model

Outcome

True phase velocity of arterial pressure wavessurrogate

The described Fourier analysis method can reliably determine the true phase velocity of arterial pressure waves in vivo within the physiological frequency range.

Cite This Study

R. H. Cox (1971) studied this question.

synapsesocial.com/papers/6a15698bb2e0231f158273ef https://doi.org/10.1161/01.res.29.4.407

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Determination of the True Phase Velocity of Arterial Pressure Waves in Vivo

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Determination of the True Phase Velocity of Arterial Pressure Waves in Vivo

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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