Acta anaesthesiologica Scandinavica
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Acta Anaesthesiol Scand · Apr 2003
Performance of the rapidly extracted auditory evoked potentials index to detect the recovery and loss of wakefulness in anesthetized and paralyzed patients.
The rapidly extracted auditory evoked potentials index (A-lineTM ARX Index or AAI) has been proposed as a method to measure the depth of anesthesia. A prospective study was designed to assess the performance of AAI to detect the recovery and loss of wakefulness in anesthetized and paralyzed patients. ⋯ The AAI may be a good predictor of recovery and loss of wakefulness for anesthetized and paralyzed patients.
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Acta Anaesthesiol Scand · Apr 2003
Fluid extravasation during cardiopulmonary bypass in piglets--effects of hypothermia and different cooling protocols.
Hypothermic cardiopulmonary bypass (CPB) is associated with capillary fluid leak and edema generation which may be secondary to hemodilution, inflammation and hypothermia. We evaluated how hypothermia and different cooling strategies influenced the fluid extravasation rate during CPB. ⋯ Hypothermia increased fluid extravasation during CPB independent of cooling strategy. Intravascular albumin and protein masses remained constant. Since inflammatory fluid leakage usually results in protein rich exudates, our data with no net protein leakage may indicate that mechanisms other than inflammation could contribute to fluid extravasation during hypothermic CPB.
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Acta Anaesthesiol Scand · Apr 2003
Environmental temperature stress on drugs in prehospital emergency medical service.
Drugs used in prehospital emergency medical service (EMS) in principle are subject to the same storage restrictions as hospital-based medications. The prehospital emergency environment however, often exceeds these storage recommendations. Main stress factors are sunlight, vibration and extreme temperature, which may lead to alteration in chemical and physical stability of stored pharmaceuticals, as well as microbiological contamination and concentration enhancement of pharmacological inserts. ⋯ These results show that even in a moderate climatic zone, drugs used in prehospital EMS are significantly influenced by temperature stress; furthermore, these results recommend the usage of temperature-controlled drug boxes.
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Acta Anaesthesiol Scand · Apr 2003
Benefit of using a triple-lumen catheter to monitor left atrial pressure.
Left atrial pressure (LAP) monitoring provides a useful option for management of hemodynamic status in pediatric open-heart surgical patients during the postoperative period. ⋯ We conclude that this preliminary technique can be a useful and easy way of monitoring LAP, as well as providing central venous access.
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Acta Anaesthesiol Scand · Apr 2003
Case ReportsResponse to the prone position in spontaneously breathing patients with hypoxemic respiratory failure.
The prone position is used for intubated patients with adult respiratory distress syndrome (ARDS) and acute lung injury (ALI). The physiological changes associated with the prone position in nonintubated patients may be even more favorable than in intubated patients. We examined the effect of the prone position on arterial blood gases and patient compliance in four awake, nonintubated patients with hypoxemic respiratory failure. ⋯ The prone position may prove beneficial in some cases of hypoxemic respiratory failure, even in awake patients, by avoiding mechanical ventilation and ventilator-associated complications.