Pulse pressure and stroke volume variations during severe haemorrhage in ventilated dogs
نویسندگان
چکیده
منابع مشابه
Pulse pressure and stroke volume variations during severe haemorrhage in ventilated dogs.
BACKGROUND Similarly to systolic pressure variation (SPV), pulse pressure variation (PPV) and stroke volume variation (SVV) derived from arterial pulse contour analysis have been shown to reflect fluid responsiveness in ventilated patients. However, unlike the SPV, both PPV and SVV have not been validated during extreme hypovolaemia. The aim of the present study was to examine whether these new...
متن کاملAutomated pulse pressure and stroke volume variations from radial artery: evaluation during major abdominal surgery.
BACKGROUND Off-line calculation of the pulse pressure variation (PPV(ref)) has repeatedly been shown to be a reliable predictor of fluid responsiveness in mechanically ventilated patients. This study was designed to assess the ability of two algorithms for automated calculation of PPV (PPV(auto)) (Intellivue MP 70) and stroke volume variation (SVV(auto)) (FloTrac/Vigileo) to predict fluid respo...
متن کامل[Hemodynamic changes during pneumoperitoneum in volume and pressure controlled ventilated dogs.].
BACKGROUND AND OBJECTIVES There are no studies associating ventilation-induced effects and hemodynamic changes during pneumoperitoneum. This study aimed at evaluating hemodynamic changes determined by pneumoperitoneum in dogs under volume and pressure controlled ventilation. METHODS The study involved 16 dogs anesthetized with sodium thiopental and fentanyl, divided in group 1: volume control...
متن کاملRelationship between Stroke Volume and Pulse Pressure during Blood Volume Perturbation: A Mathematical Analysis
Arterial pulse pressure has been widely used as surrogate of stroke volume, for example, in the guidance of fluid therapy. However, recent experimental investigations suggest that arterial pulse pressure is not linearly proportional to stroke volume. However, mechanisms underlying the relation between the two have not been clearly understood. The goal of this study was to elucidate how arterial...
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....
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ژورنال
عنوان ژورنال: British Journal of Anaesthesia
سال: 2005
ISSN: 0007-0912
DOI: 10.1093/bja/aei116