KMID : 0358920180450040508
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Journal of the Korean Academy of Pedodontics 2018 Volume.45 No. 4 p.508 ~ p.513
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Blood Gas Analysis of Respiratory Depression during Sevoflurane Inhalation Induction for General Anesthesia in the Disabled Patients
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Yoon Tae-Wan
Kim Seung-Oh
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Abstract
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Tidal volume by sevoflurane in small amounts is stable due to the increase in the breathing rate. But alveolus ventilation decreases due to sevoflurane as the degree of sedation increases; this ultimately causes PaCO2 to rise. The occurrence of suppression of breath increases the risk of severe hypoxia and hypercapnia in deeply sedated patients with disabilities. Sevoflurane inhalation anesthesia has a number of risks and may have unexpected problems with hemodynamic changes depending on the underlying state of the body. This study was conducted to examine the stability of internal acid-base system caused by respiratory depression occurring when patients with disabilities are induced by sevoflurane. Anesthetic induction was carried out by placing a mask on top of the patient¡¯s face and through voluntary breathing with 4 vol% of sevoflurane, 4 L/min of nitrous oxide, and 4 L/min of oxygen. After the patient¡¯s loss of consciousness and muscle relaxation, IV line was inserted by an expert and intravenous blood gas was analyzed by extracting blood from vein. In a deeply sedated state, the average amount of pH of the entire patients was measured as 7.36 ¡¾ 0.06. The average amount of PvCO2 of the entire patients was measured as 48.8 ¡¾ 8.50 mmHg. The average amount of HCO3 - of the entire patients was measured as 27.2 ¡¾ 3.0 mmol/L. In conclusion, in dental treatment of patients with disabilities, the internal acid base response to inhalation sedation using sevoflurane is relatively stable.
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KEYWORD
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Patient with disabilities, Sevoflurane inhalation sedation, General anesthesia, Respiratory depression
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