Comparison of the Finapres blood pressure monitor with intra-arterial manometry during induction of anaesthesia.
The Finapres (Ohmeda, Madison, U.S.A.) is a non-invasive device which continuously measures the arterial blood pressure in a finger and produces a real-time display of the arterial pressure wave. It consists of a finger cuff with an infra-red transmission plethysmograph, a servo control box and a monitor unit. The device was compared with intra-arterial pressure monitoring in twenty patients during induction of anaesthesia for elective neurosurgical procedures. The differences between the two methods were considerable, ranging from -40 mmHg to +26 mmHg for mean pressure. While the Finapres has potential as a non-invasive continuous blood pressure monitor, the current model Finapres, as supplied, displays too great a variability for it to be used as an alternative to intra-arterial pressure monitoring.
Kermode
J L
JL
Department of Anaesthesia, Sir Charles Gairdner Hospital, Nedlands, Western Australia.
Davis
N J
NJ
Thompson
W R
WR
D000328:Adult; D000368:Aged; D000768:Anesthesia, General / Q000295:instrumentation*; D015924:Blood Pressure Monitors; D005260:Female; D006801:Humans; D006973:Hypertension / Q000175:diagnosis; D007431:Intraoperative Complications / Q000175:diagnosis; D008297:Male; D008838:Microcomputers; D008875:Middle Aged; D009422:Nervous System Diseases / Q000601:surgery*; D012815:Signal Processing, Computer-Assisted