Journal of clinical monitoring and computing
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J Clin Monit Comput · Oct 2008
Reliability of cardiac output calculation by the fick principle and central venous oxygen saturation in emergency conditions.
For many years thermodilution has been the gold standard for determining cardiac output in the critically ill patients. Less invasive methods have recently been introduced. This study aimed at evaluating the agreement between cardiac output (CO) measured by a new Fick method, using central venous saturation (Scvo(2)), and that measured by the classic thermodilution technique, in patients requiring emergent CO evaluation. ⋯ The new method of Fick assessed emergent CO as reliably as the thermodilution, regardless of whether it was low or high. The use of Scvo(2) allows for prompt bedside calculation for most emergency patients.
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J Clin Monit Comput · Oct 2008
Controlled Clinical TrialTransoesophageal Doppler monitoring for fluid and hemodynamic treatment during lung surgery.
Patients undergoing lung resection are vulnerable to fluid overhydration. Recently, goal-directed fluid therapy using transoesophageal Doppler monitoring (TDM) has been shown to improve postoperative clinical outcome. The aim of this study was to assess the feasibility of TDM during open-chest procedures for guiding fluid and hemodynamic treatment. ⋯ In thoracic surgical patients, TDM can be used to detect and correct low flow conditions and to guide hemodynamic support during the intraoperative period.
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J Clin Monit Comput · Oct 2008
Pulse and systolic pressure variation assessment in partially assisted ventilatory support.
The use of pulse pressure variation (PPV) and systolic pressure variation (SPV) is possible during controlled ventilation (MV). Even in acute respiratory failure, controlled MV tends to be replaced by assisted ventilatory support. We tested if PPV and SPV during flow triggered synchronized intermittent mechanical ventilation (SIMV) could be as accurate as in controlled MV. ⋯ PPV and SPV measured during SIMV fitted with the findings in controlled MV. Dynamic indexes could be accurately monitored in patients breathing with assisted respiratory assistance adding an imposed large enough SIMV breath.