Stroke volume variation
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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.
10p viisaacnewton 25-04-2022 14 2 Download
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In the assessment of hypovolemia the value of functional hemodynamic monitoring during spontaneous breathing is debated. The aim of our study was to investigate in spontaneously breathing subjects the changes in hemodynamic parameters during graded central hypovolemia and to test whether slow patterned breathing improved the discriminative value of stroke volume (SV), pulse pressure (PP), and their variations (SVV, PPV). In addition, we tested the alterations in labial microcirculation.
8p viisaacnewton 26-04-2022 9 1 Download
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The use of vasoconstrictor can affect the dynamic indices to predict fluid responsiveness. We investigate the effects of an increase of vascular tone on dynamic variables of fluid responsiveness in a rabbit model of hemorrhage, and to examine the ability of the arterial pressure surrogates dynamic indices to track systolic volume variation (SVV) during hypovolemia under increased vasomotor tone.
9p viisaacnewton 26-04-2022 9 1 Download
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Perioperative goal directed therapy (GDT) can substantially improve the outcomes of high risk surgical patients as shown by many clinical studies. However, the approach needs initial investment and can increase the already very high staff workload. These economic imperatives may be at least partly responsible for weak adherence to the GDT concept.
8p viisaacnewton 26-04-2022 10 2 Download
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Pulse pressure (PPV) and stroke volume (SVV) variations may not be reliable in the setting of pulmonary hypertension and/or right ventricular (RV) failure. We hypothesized that RV afterload increase attenuates SVV and PPV during hypovolemia in a rabbit model of pulmonary embolism (PE) secondary to RV dysfunction.
8p viottohahn 30-03-2022 8 1 Download
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Whether during spontaneous breathing arterial pressure variations (APV) can detect a volume deficit is not established. We hypothesized that amplification of intra-thoracic pressure oscillations by breathing through resistors would enhance APV to allow identification of a reduced cardiac output (CO). This study tested that hypothesis in healthy volunteers exposed to central hypovolemia by head-up tilt.
8p viottohahn 30-03-2022 9 1 Download
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Functional hemodynamic parameters such as stroke volume and pulse pressure variation (SVV and PPV) have been shown to be reliable predictors of fluid responsiveness in mechanically ventilated patients. Today, different minimally- and non-invasive hemodynamic monitoring systems measure functional hemodynamic parameters.
7p vampires36 30-12-2021 12 0 Download
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Thoracic epidural anesthesia (TEA) exacerbates hypotension due to peripheral vasodilator effects following the use of general anesthetics. This study aimed to compare the hemodynamic changes caused by three different concentrations of epidural ropivacaine and to evaluate the performance of the stroke-volume variation (SVV) and central venous pressure (CVP) during TEA with general anesthesia.
10p vampires36 30-12-2021 7 0 Download
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This study was aimed to evaluate the ability of left ventricular end-diastolic volume variations (LVEDVV) measured by transesophageal echocardiography (TEE) compared with stroke volume variation (SVV) obtained by the FloTrac/Vigileo monitor to predict fluid responsiveness, in patients undergoing craniotomy with goal direct therapy.
6p vampires36 30-12-2021 10 0 Download
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The reliability of pulse pressure variation (PPV) and stroke volume variation (SVV) is controversial under pneumoperitoneum. In addition, the usefulness of these indices is being called into question with the increasing adoption of lung-protective ventilation using low tidal volume (VT) in surgical patients.
11p vizhangzhidong 29-12-2021 10 2 Download
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This study was done to evaluate fluid resuscitation guided by stroke volume variation in septic shock. This prospective randomized included sixty patients presented with hypotension (MAP less than 65 mmHg) and hyperlactatemia (serum lactate above 2 mmol/L) in intensive care unit (ICU). Patients were randomly classified into two groups, 30 patients for each group; group I (Early-goal-directed-therapy group {EGDT}) and group II (stroke volume variation guided fluid resuscitation). In group I mortality rate was 33.33% in comparison to 23.
10p cothumenhmong3 22-02-2020 16 0 Download
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Intraoperative blood transfusion increases the risk for perioperative mortality and morbidity in liver transplant recipients. A high stroke volume variation (SVV) method has been proposed to reduce blood loss during living donor hepatectomy.
5p viwashington2711 04-12-2019 6 0 Download
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Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Pulse pressure variation, stroke volume variation and dynamic arterial elastance...
2p thulanh18 05-11-2011 83 3 Download
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Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Critical Care giúp cho các bạn có thêm kiến thức về ngành y học đề tài: Pulse pressure variation and stroke volume variation during increased intra-abdominal pressure: an experimental study...
9p thulanh18 05-11-2011 40 2 Download
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Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học quốc tế cung cấp cho các bạn kiến thức về ngành y đề tài: Using pulse pressure variation or stroke volume variation to diagnose right ventricular failure?
2p coxanh_7 31-10-2011 43 1 Download
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Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học quốc tế cung cấp cho các bạn kiến thức về ngành y đề tài: Intraoperative fluid optimization using stroke volume variation in high risk surgical patients: results of prospective randomized study...
15p coxanh_6 30-10-2011 39 2 Download