Measurement of Pressures in Man by Cardiac Catheters | Zendy

Earl H. Wood | Zendy; I Leusen | Zendy; Homer R. Warner | Zendy; John L. Wright | Zendy

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Measurement of Pressures in Man by Cardiac Catheters

Author(s) -

Earl H. Wood,

I Leusen,

Homer R. Warner,

John L. Wright

Publication year - 1954

Publication title -

circulation research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 4.899

H-Index - 336

eISSN - 1524-4571

pISSN - 0009-7330

DOI - 10.1161/01.res.2.4.294

Subject(s) - catheter , intracardiac injection , sine wave , pressure measurement , biomedical engineering , amplitude , pulmonary artery , medicine , cardiology , materials science , physics , surgery , optics , quantum mechanics , voltage , meteorology

Relationships between artefacts in recorded intracardiac pulses and the dynamic response and susceptibility of catheter-manometer systems to artefacts caused by motion of the catheter were investigated. Sine-wave motions of the catheter, resembling motion frequently seen when the catheter is in the pulmonary artery, produce sine-wave pressure variations with peak-to-peak amplitudes of 10 mm. Hg. Square-wave motions (impacts) produce high-frequency pressure variations, greatest (10 to 200 mm. Hg) when directed along the axis and much less when perpendicular to the axis of the catheter. High-fidelity records of pressure by conventional cardiac catheter-manometer systems are most unlikely when such catheters are threaded through the beating heart.

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