Journal of clinical anesthesia
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Randomized Controlled Trial Comparative Study Clinical Trial
The optimal effective concentration of lidocaine to reduce pain on injection of propofol.
To determine the optimal concentration of lidocaine that reduces pain on injection of a propofol-lidocaine mixture. ⋯ The optimal effective concentration of lidocaine, which decreased the incidence of pain caused by propofol injection, was 0.1% in the currently studied population.
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Randomized Controlled Trial Clinical Trial
Preoperative pulse wave velocity fails to predict hemodynamic responses to anesthesia and to surgical stimulation.
To determine whether pulse wave velocity (PWV), which is a useful indicator of cardiovascular disease, can predict the hemodynamic responses to anesthesia and surgical stimulation in surgical patients. ⋯ Preoperative PWV fails to predict hemodynamic responses to anesthesia and to surgical stimulation.
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Randomized Controlled Trial Clinical Trial
Xenon suppresses the hypnotic arousal in response to surgical stimulation.
To evaluate the suppressive effects of xenon (Xe) on hypnotic arousal at skin incision. ⋯ Unlike N2O, Xe was able to suppress hypnotic arousal in response to surgical stimulation when administered with sevoflurane.
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To examine the effect of perfusion on accuracy of two pulse oximeters in children and to determine thresholds of perfusion below which these pulse oximeters become inaccurate or cease to function. ⋯ At the parameters explored in this study, the selected seven perfusion variables (age, weight, core and skin temperature, hemoglobin concentration, pulse pressure, and percent flow by laser Doppler) have little effect on accuracy of pulse oximetry in children.
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Comparative Study
Effect of probe design on accuracy and reliability of pulse oximetry in pediatric patients.
To determine if the traditional band-wrap disposable pulse oximeter probe is more accurate or reliable for oxygen monitoring in children than the reusable clip-type probe. ⋯ The type of probe selected has little effect on accuracy of pulse oximetry in children. After cardiopulmonary bypass, using the Ohmeda band combination may improve the likelihood of obtaining consistent readings and decreasing down time.