Relationship of stroke volume variation, pulse pressure variation and global end-diastolic volume in patients undergoing brain surgery
نویسندگان
چکیده
منابع مشابه
Pulse pressure variation and stroke volume variation to predict fluid responsiveness in patients undergoing carotid endarterectomy
BACKGROUND During carotid endarterectomy (CEA), hemodynamic stability and adequate fluid management are crucial to prevent perioperative cerebral stroke, myocardial infarction and hyperperfusion syndrome. Both pulse pressure variation (PPV) and stroke volume variation (SVV), dynamic preload indices derived from the arterial waveform, are increasingly advocated as predictors of fluid responsiven...
متن کاملPulse pressure variation, stroke volume variation and dynamic arterial elastance
Which means that SVV (%) ≈ pulse pressure variation (PPV; %) for FloTracTM. With the present mathematical equation, it can be demonstrated that the SVV calculated by FloTracTM (SVVFT) is not infl uenced by Khi, which means that SVVFT calculation does not include eff ective arterial elastance (Ea). Th e originality of Garcia and colleagues’ fi nding is that they realized that when measuring PPV ...
متن کاملPulse pressure variation and stroke volume variation during increased intra-abdominal pressure: an experimental study
INTRODUCTION The aim of this study was to evaluate dynamic indices of fluid responsiveness in a model of intra-abdominal hypertension. METHODS Nine mechanically-ventilated pigs underwent increased intra-abdominal pressure (IAP) by abdominal banding up to 30 mmHg and then fluid loading (FL) at this IAP. The same protocol was carried out in the same animals made hypovolemic by blood withdrawal....
متن کاملPulse pressure variation and stroke volume variation under different inhaled concentrations of isoflurane, sevoflurane and desflurane in pigs undergoing hemorrhage
OBJECTIVES Inhalant anesthesia induces dose-dependent cardiovascular depression, but whether fluid responsiveness is differentially influenced by the inhalant agent and plasma volemia remains unknown. The aim of this study was to compare the effects of isoflurane, sevoflurane and desflurane on pulse pressure variation and stroke volume variation in pigs undergoing hemorrhage. METHODS Twenty-f...
متن کاملInfluence of tidal volume on pulse pressure variation and stroke volume variation during experimental intra-abdominal hypertension
BACKGROUND Pulse pressure variation (PPV) and stroke volume variation (SVV) are frequently used to assess fluid responsiveness in critically ill patients on mechanical ventilation (MV). There are many factors, in addition to preload that influence the magnitude of these cyclic variations. We sought to investigate the effect of tidal volume (V(T)) on PPV and SVV, and prediction of fluid responsi...
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ژورنال
عنوان ژورنال: Critical Care
سال: 2010
ISSN: 1364-8535
DOI: 10.1186/cc8347