Measurement of Pressures in Man by Cardiac Catheters
- 1 July 1954
- journal article
- research article
- Published by Wolters Kluwer Health in Circulation Research
- Vol. 2 (4) , 294-303
- https://doi.org/10.1161/01.res.2.4.294
Abstract
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.Keywords
This publication has 1 reference indexed in Scilit:
- An Intracardiac Manometer: Its Evaluation and ApplicationCirculation, 1951