Noninvasive continuous blood pressure control by pulse wave velocity.
A comparison of arterial pulse wave velocity (PWV) detected by ultrasonic Doppler probes and invasive blood pressure data was performed. For accurate assessment of PWV beat-to-beat detection of the pulse transit time (PTT) was performed by means of two 8 Mhz ultrasonic Doppler probes placed externally over the right brachial resp. radial artery, as a reference the continuous invasive blood pressure (IAP) of the contralateral radial artery was collected. Comparing the PWV associated blood pressure (APPWV) and IAP yielded a correlation coefficient of r = 0.86, and Bland-Altman plotting proved 95% (+/- 2 SEM) of APPWV values to differ within +/- 10 mm Hg from IAP. With this clinical study we found that beat-to-beat PWV measurement noninvasively, continuously and reliably monitors arterial blood pressure especially with respect to rapid blood pressure changes.
Klinik für Anästhesiologie, Universität Erlangen-Nürnberg, Germany.
N
N
Lutter
H G
HG
Engl
F
F
Fischer
R D
RD
Bauer
D000328:Adult; D000368:Aged; D001783:Blood Flow Velocity / Q000187:drug effects / Q000502:physiology; D015924:Blood Pressure Monitors; D002408:Catheters, Indwelling; D005260:Female; D006801:Humans; D006973:Hypertension / Q000175:diagnosis* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D005996:Nitroglycerin / Q000008:administration & dosage; D009862:Online Systems / Q000295:instrumentation; D011674:Pulse / Q000187:drug effects / Q000502:physiology*; D012016:Reference Values; D012212:Rheology / Q000295:instrumentation*; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013806:Theophylline / Q000008:administration & dosage
D013806:Theophylline; D005996:Nitroglycerin