Changes in left ventricular ejection time and pulse transit time derived from finger photoplethysmogram and electrocardiogram during moderate haemorrhage

Summary Objectives: Early identification of haemorrhage is difficult when a bleeding site is not apparent. This study explored the potential use of the finger photoplethysmographic (PPG) waveform derived left ventricular ejection time (LVETp) and pulse transit time (PTT) for detecting blood loss, b...

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Bibliographic Details
Published in:	Clinical physiology and functional imaging Vol. 29; no. 3; pp. 163 - 169
Main Authors:	Middleton, Paul M., Chan, Gregory S.H., O'Lone, Emma, Steel, Elizabeth, Carroll, Rebecca, Celler, Branko G., Lovell, Nigel H.
Format:	Journal Article
Language:	English
Published:	Oxford, UK Blackwell Publishing Ltd 01-05-2009 Blackwell
Subjects:	Adult Biological and medical sciences blood donation Blood Donors Blood Pressure Electrocardiography Female Fingers - blood supply Fundamental and applied biological sciences. Psychology Heart Rate Hemorrhage - diagnosis Hemorrhage - physiopathology Humans hypovolaemia Male Middle Aged Monitoring, Physiologic - methods Photoplethysmography - methods pre-ejection period Predictive Value of Tests preload Prospective Studies pulse oximetry Stroke Volume systolic time intervals Time Factors Ventricular Function, Left Vertebrates: anatomy and physiology, studies on body, several organs or systems pulse oximetry systolic time intervals Vertebrata Systolic time interval Mammalia Finger Ventricular ejection Hemorrhage pre-ejection period preload blood donation hypovolaemia
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