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승익상 한양대학교 의과대학 1988 한양의대 학술지 Vol.8 No.2
A fundamental concern of critical care medicine is the threat to the basic life processgas exchange. Arterial blood gas analysis not only reflects the state of the basic life process but also reflects the end result of the supportive therapeutic modalities. Therefore, significant therapeutic decisions are commonly influenced by these laboratory tests, thus placing overwhelming responsibility on all associated with the laboratory, physician, nurse, respiratory care practitioners to assure accurate and reliable results. Blood gas samples are highly susceptible to preanalytic error due to improper methods of obtaining and handling the sample and incomplete recording the slip prior to delivery to the laboratory. The object of this study is two-fold: one, to evaluate recording status on the arterial blood gas request slip and two, to interprete the acid-base status and the effectiveness of oxygen therapy.
폐쇄식 마취용 Physio Flex 마취기의 임상 사용경험
승익상 대한마취과학회 1999 Korean Journal of Anesthesiology Vol.36 No.4
Background : The anesthesia machine PhysioFlex was especially constructed to deliver anesthetics in a closed circuit system. In this anesthesia machine the concentrations of the respiratory gases and the gas volume in the circle system are automatically controlled by a feedback mechanism. The aim of this study is to introduce 1,132 patients who have received general anesthesia in a closed circuit system using PhysioFlex, and to calculate the real consumed amount of oxygen and nitrous oxide, and to describe the advantages and disadvantages of PhysioFlex for clinical uses. Method : The author used a PhysioFlex in cases of 1,132 various surgical interventions. After induction with thiopentone and suxamethonium, general anesthesia was maintained with nitrous oxide in 50% oxygen and enflurane (or isoflurane, halothane) and supplemented with nalbuphine and pancuronium. These cases were analyzed by their sex, age, height, weight, method of airway maintenance during general anesthesia, operation position, anesthesia time, and arterial blood gases by review of anesthesia records. Average minute-consumed amount of oxygen and nitrous oxide was calculated by recording every 30 seconds throughout the anesthesia procedures except preoxygenation and flush periods. The advantages and disadvantages of PhysioFlex were described on the base of the author's clinical experience. Results : The anesthetic technique of the closed circuit system by PhysioFlex could be used adequately for any surgical procedures. In this system consumed amounts of oxygen and nitrous oxide were 179.72±2.48 ml/min and 88.49±2.78 ml/min respectively. The author found out several advantages and few disadvantages of PhysioFlex for its clinical uses. Conclusions : Closed circuit system of PhysioFlex anesthesia machine offer numerous advantages such as reduction of gas consumption, low cost, less pollution in both the operating theater and the environment, increase in inspired gas humidity, easy handling of machine, and excellent respiratory alarm sysms. (Korean J Anesthesiol 1999; 36: 571∼576)