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Evaluation the data behind using pulse pressure variation (ppv) as a method to predict fluid/volume responsiveness in resuscitation. 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. Monitoring arterial pressure variation, i.e
『生物信号处理』用ECG&PPG如何测血压？常见血压测量方法介绍 - 知乎
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 Use is otherwise similar to svv normal ppv The optimal ppv threshold was determined with the youden's index [19]
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.
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. Pulse pressure variation (ppv) in mechanically ventilated patients pulse pressure variation (ppv) is a dynamic hemodynamic parameter that predicts fluid responsiveness with high specificity (91%) and moderate sensitivity (72%) in mechanically ventilated patients, serving as a valuable tool for guiding fluid management decisions What is considered a normal ppv range
In healthy individuals, ppv is typically <10% When is ppv measurement most useful Ppv is most reliable in mechanically ventilated patients with regular heart rhythms and tidal volumes ≥8 ml/kg.
