Perfusion Index and Pleth Variability Index
نویسندگان
چکیده
منابع مشابه
Accuracy of the pleth variability index to predict fluid responsiveness depends on the perfusion index.
BACKGROUND Respiratory variations in plethysmographic waveform amplitudes derived from pulse oximetry are believed to predict fluid responsiveness. The non-invasive pleth variability index (PVI) is a variable based on the calculation of changes in the perfusion index (PI). The aim of the following study was to examine whether the predictive power of PVI depends on different values of PI. METH...
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OBJECTIVE To investigate whether the pleth variability index, a noninvasive and continuous tool, can predict fluid responsiveness in mechanically ventilated patients with circulatory insufficiency. DESIGN Prospective study. SETTING Surgical intensive care unit of a university hospital. PATIENTS Forty mechanically ventilated patients with circulatory insufficiency in whom volume expansion ...
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BACKGROUND Fluid responsiveness is a measure of preload dependence and is defined as an increase in cardiac output due to volume expansion. Recent publications have suggested that variation in amplitude of the pulse oximetry waveform may be predictive of fluid responsiveness. The pleth variability index (PVI) was developed as a noninvasive bedside measurement of this variation in the pulse oxim...
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Background: Hypotension occurs commonly during caesarean section under spinal anaesthesia. As the onset may be rapid, it may fail to be detected by non-invasive blood pressure (BP) measurement in a timely fashion. Pulse oximeters can continuously and non-invasively measure tissue perfusion (perfusion index (PI)) and its variation with the respiratory cycle (pleth variability index (PVI)). As wi...
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BACKGROUND Interscalene nerve blocks provide adequate analgesia, but there are no objective criteria for early assessment of correct catheter placement. In the present study, pulse oximetry technology was used to evaluate changes in the perfusion index (PI) in both blocked and unblocked arms, and changes in the plethysmographic variability index (PVI) were evaluated once mechanical ventilation ...
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ژورنال
عنوان ژورنال: THE JOURNAL OF JAPAN SOCIETY FOR CLINICAL ANESTHESIA
سال: 2011
ISSN: 0285-4945,1349-9149
DOI: 10.2199/jjsca.31.347