Military medicine
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Comparative Study
Performance of the universal portable anesthesia complete vaporizer with mechanical ventilation in both drawover and pushover configurations.
Currently, a mechanical ventilator that can be adapted to the Universal Portable Anesthesia Complete (UPAC) vaporizer and anesthetic delivery system does not exist. The need for the anesthetist to concentrate on drug delivery and fluid resuscitation for the combat casualty in the field setting provides an expedient for the adaptation of a ventilator to the UPAC system. ⋯ The results of the comparison between the two ventilators indicated that there was no significant difference in vaporizer output between drawover and pushover configurations. The data indicated that vaporizer output could be reliably predicted in either mode and was correlated with tidal volume and respiratory rate.
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Comparative Study
Clinical evaluation of pushover mechanical ventilation with the Ohmeda Universal Portable Anesthesia Complete vaporizer.
Previous studies have not demonstrated the usefulness of a mechanical ventilator with the Universal Portable Anesthesia Complete (UPAC) field anesthesia delivery system in a pushover mode. This study demonstrated that the Lifecare PLV-100 ventilator can function effectively in a practical pushover configuration with the UPAC vaporizer. By comparison, vaporizer output followed the patterns of documented concentration curves for isoflurane at a given dial setting and minute ventilation. Measured airway pressures in the breathing circuit were within physiological parameters.
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Randomized Controlled Trial Comparative Study Clinical Trial
A comparison of 5-minute povidone-iodine scrub and 1-minute povidone-iodine scrub followed by alcohol foam.
The purpose of this study was to determine if a 1-minute scrub with povidone-iodine followed by alcohol foam is as effective as a 5-minute scrub with povidone-iodine in reducing skin bacterial counts. A 1-minute scrub with povidone-iodine followed by alcohol foam and a 5-minute scrub with povidone-iodine was done. In the first study, cultures were obtained after 1 hour, and in the second study, cultures were obtained after 2 hours. ⋯ The study involved two groups of 12 participants and a total of 37 patients over a period of 5 months. The results show that there was no significant difference between the number of colonies cultured for the 1-minute scrub compared with the 5-minute scrub for either the 1-hour or the 2-hour study. In fact, the total number of bacterial colonies was less after the 1-minute scrub with alcohol foam than after the standard 5-minute scrub in both the 1-hour group (10 vs. 18) and the 2-hour group (18 vs. 44).
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Data from 12 Department of Veterans Affairs patients hospitalized for status asthmaticus were analyzed to determine the rate and degree of response to therapy. The time to achieve recovery was directly related to the level of baseline obstruction at the time of hospital admission. The recovery rate was constant and could be described by a single second-degree polynomial regression equation. Nomograms were constructed showing this rate of improvement of pulmonary function over time at four levels of baseline pulmonary obstruction.