Pulse oximetry plethysmographic waveform during changes in blood volume
نویسندگان
چکیده
منابع مشابه
Respiratory variations in pulse oximetry plethysmographic waveform amplitude to predict fluid responsiveness in the operating room.
BACKGROUND Respiratory variations in pulse oximetry plethysmographic waveform amplitude (DeltaPOP) are related to respiratory variations in pulse pressure (DeltaPP) and are sensitive to changes in preload. The authors hypothesized that DeltaPOP can predict fluid responsiveness in mechanically ventilated patients during general anesthesia. METHODS Twenty-five patients referred for cardiac surg...
متن کاملThe Pulse Oximeter Plethysmographic Waveform Reflects Changes That Occur during the Respiratory Cycle
Many pulse oximetry technologies display a processed and filtered representation of the photoplethysmosgraphic waveform. Each manufacturer uses unique proprietary algorithms to calculate the waveform displayed on the pulse oximeter. Masimo has extracted and processed information from the waveform to create two physiologic indices, perfusion index (PI) and pleth variability index (PVI). PI is ca...
متن کاملThe Pulse Oximeter Plethysmographic Waveform Reflects Changes That Occur during the Respiratory Cycle
Many pulse oximetry technologies display a processed and filtered representation of the photoplethysmosgraphic waveform. Each manufacturer uses unique proprietary algorithms to calculate the waveform displayed on the pulse oximeter. Masimo has extracted and processed information from the waveform to create two physiologic indices, perfusion index (PI) and pleth variability index (PVI). PI is ca...
متن کاملRelation between respiratory variations in pulse oximetry plethysmographic waveform amplitude and arterial pulse pressure in ventilated patients
INTRODUCTION Respiratory variation in arterial pulse pressure is a reliable predictor of fluid responsiveness in mechanically ventilated patients with circulatory failure. The main limitation of this method is that it requires an invasive arterial catheter. Both arterial and pulse oximetry plethysmographic waveforms depend on stroke volume. We conducted a prospective study to evaluate the relat...
متن کاملComparison between respiratory pulse oximetry plethysmographic waveform amplitude and arterial pulse pressure variations among patients with and without norepinephrine use.
OBJECTIVES Arterial pulse pressure respiratory variation is a good predictor of fluid response in ventilated patients. Recently, it was shown that respiratory variation in arterial pulse pressure correlates with variation in pulse oximetry plethysmographic waveform amplitude. We wanted to evaluate the correlation between respiratory variation in arterial pulse pressure and respiratory variation...
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ژورنال
عنوان ژورنال: British Journal of Anaesthesia
سال: 1999
ISSN: 0007-0912
DOI: 10.1093/bja/82.2.178