Measurement of Pressures in Man by Cardiac Catheters
作者： EARL H. WOOD , ISIDOOR R. LEUSEN , HOMER R. WARNER , J. LEO WRIGHT
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摘要: Relationships between artefacts in recorded intracardiac pulses and the dynamic response susceptibility of catheter-manometer systems to caused by motion catheter were investigated. Sine-wave motions catheter, resembling frequently seen when is pulmonary artery, produce sine-wave pressure variations with peak-to-peak amplitudes 10 mm. Hg. Square-wave (impacts) high-frequency variations, greatest (10 200 Hg) directed along axis much less perpendicular catheter. High-fidelity records conventional cardiac are most unlikely such catheters threaded through beating heart.
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