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Evaluation the data behind using pulse pressure variation (ppv) as a method to predict fluid/volume responsiveness in resuscitation. These are the equations used to arrive at the numbers which the machine spews out after you have done a thermodilution, as well as the normal ranges for those numbers. Systolic pressure variation and stroke volume variation between spontaneous breathing and mechanical ventilation
The optimal ppv threshold was determined with the youden's index [19] What is ppv in arterial line In line with a more clinically useful approach that was recently suggested [19, 20, 21] we also adopted a grey zone, or two cutoffs, approach to describe the ppv range of values for which formal clinical conclusions cannot be reached.
Monitoring arterial pressure variation, i.e
Spv/ppv, helps to answer the question of fluid responsiveness and can be used to guide fluid expansion therapy.4 spv/ppv parameters cannot, however, indicate what type of fluid is the most suitable for the therapy Lidco ltd, as the manufacturer and supplier of pulseco, lidcoplus, lidcorapid and lidcounity medical devices, does not practice medicine and does not recommend these normal parameter metrics for use on a specific patient The medical practitioner who performs any procedure is responsible for determining and utilizing the appropriate techniques, devices and treatments for each individual. Introduction pulse pressure variation (ppv) has been shown to predict fluid responsiveness in ventilated intensive care unit (icu) patients
The present study was aimed at assessing the diagnostic accuracy of ppv for prediction of fluid responsiveness by using the grey zone approach in a large population Methods the study pooled data of 556 patients from nine french icus Use is otherwise similar to svv normal ppv Likely to be volume responsive accurately measured only if on controlled mechanical ventilation and in normal sinus rhythm use contraindicated if having arrhythmias or spontaneous ventilation (irregular nature of spontaneous breaths causes.
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