Journal of cardiothoracic and vascular anesthesia
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J. Cardiothorac. Vasc. Anesth. · Dec 2014
Randomized Controlled TrialEffect of Increasing Heart Rate and Tidal Volume on Stroke Volume Variability in Vascular Surgery Patients.
Because heart rate affects ventricular filling, the aim of the present study was to assess the effects of increasing heart rate and tidal volume on stroke volume variability to determine whether this dynamic index is heart-rate dependent. ⋯ Stroke volume variability is sensitive to increases in heart rate in addition to tidal volume. Increasing heart rate caused stroke volume variability to increase significantly, although not to the same magnitude as increasing tidal volume. When using dynamic volume indices, clinicians should be aware of increases in heart rate, although its clinical impact may be relatively minor compared with changes in tidal volume.
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J. Cardiothorac. Vasc. Anesth. · Dec 2014
Randomized Controlled TrialEffect of Aortic Root Infusion of Sufentanil on Ischemia-Reperfusion Injury in Patients Undergoing Mitral Valve Replacement.
This study investigated the effects of aortic root infusion of sufentanil on myocardial ischemia/reperfusion injury in patients undergoing elective mitral valve replacement (MVR) with cardiopulmonary bypass (CPB). ⋯ The present study demonstrated that sufentanil can attenuate myocardial ischemia-reperfusion injury in patients undergoing elective MVR with CPB.