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The Covariation of Blood Pressure and Pulse Transit Time in Hypertensive Patients
Author(s) -
Allen Robert a.,
Schneider John A.,
Davidson Dennis M.,
Winchester Mark A.,
Taylor C. Barr
Publication year - 1981
Publication title -
psychophysiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.661
H-Index - 156
eISSN - 1469-8986
pISSN - 0048-5772
DOI - 10.1111/j.1469-8986.1981.tb03038.x
Subject(s) - blood pressure , pulse pressure , cardiology , medicine , psychology , diastole , pulse (music) , radial artery , artery , engineering , detector , electrical engineering
To examine the relationship between blood pressure (BP) and pulse transit time (PTT) as measured by the time between the ECG R‐wave and an associated peripheral pulse, BP was recorded via a radial artery catheter in 3 hvpertensive subjects who underwent a variety of conditions to alter BP. Overall. 70% of the data was usable. Absolute levels of systolic blood pressure (SBP) but not diastolic blood pressure (DBP) were found to correlate appreciably with PTT. There were significant associations between PTT and both SBP and mean BP but not DBP for direction of BP change. With large SBP changes (> 4 mmHg) an increase in the strength of association occurred in 14 of the 21 conditions across subjects. Overall, PTT did not accurately predict actual BP. PTT and SBP covaried more appreciably in these hypertensives than has been reported for normotensives.