Published in:
01-03-2008 | Case Discussion
Clinical applications of photoplethysmography in paediatric intensive care
Authors:
Bernhard Frey, Katharina Waldvogel, Christian Balmer
Published in:
Intensive Care Medicine
|
Issue 3/2008
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Abstract
Objective
The photoplethysmographic wave is displayed by most pulse oximeters. It may be used as a non-invasive alternative to invasive arterial blood pressure trace analysis for continuous haemodynamic monitoring in selected situations.
Patients and setting
Four cardiac patients treated in a tertiary neonatal-paediatric intensive care unit.
Measurements
Simultaneous monitoring of the photoplethysmographic wave, ECG, and invasive blood pressure.
Results and conclusions
Photoplethysmography allows for monitoring pulse rate in patients with (possible) heart rate/pulse rate dissociation (pacemaker dependency, pulsatile ventricular assist device); monitoring sudden changes in heart beat volume, which are unrelated to respiration (pulseless electrical activity, pulsus alternans); and monitoring respiratory-dependent fluctuations of the plethysmographic wave (heart failure, hypovolaemia, asthma, upper airway obstruction, pericardial effusion). Deterioration, slowly evolving over time, may be detected by this method.