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임상연구 : 견관절경 수술 환자에서 자세 변화에 따른 혈역학과 가스 교환 지수의 변화
정월선 ( Wol Seon Jung ),김홍순 ( Hong Sun Kim ),김종찬 ( Jong Chan Kim ),박연수 ( Yeon Soo Park ),곽현정 ( Hyun Jeong Kwak ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.52 No.1
Background: Sevoflurane and propofol have different cardiorespiratory effects on postural changes. The purpose of this study was to compare the effects of sevoflurane and propofol on hemodynamics and gas exchange index when patients are raised from the supine position to the beach chair position. Methods: Forty patients requiring beach chair position for shoulder surgery were randomly assigned to receive sevoflurane (end-tidal concentration 1 vol%, n = 20) or propofol (target concentration 3μg/ml, n = 20). Hemodynamic variables and arterial blood gas analysis data were recorded and gas exchange indices were calculated before induction (baseline), 20 min after endotracheal intubation (supine position), and 20 min after beach chair position. Results: There were significant decreases in mean arterial pressure, central venous pressure, and central venous oxygen saturation after beach chair position. There were no significant changes in gas exchange indices after the position changes. There were no significant differences between groups in hemodynamics and gas exchanges indices. Conclusions: Raising healthy patients from the supine to the beach-chair position produced a significant decrease in hemodynamic indices with little changes in gas exchange indices. However, the effects of sevoflurane and propofol on the both hemodynamic and gas change indices were not significantly different. (Korean J Anesthesiol 2007; 52: 23~8)
복강경을 이용한 질자궁절제술시 기복과 자세변화가 혈압변이도와 심박수변이도에 미치는 영향
장영진 ( Yong Jin Chang ),정월선 ( Wol Seon Jung ),변종순 ( Jong Soon Byun ),김홍순 ( Hong Sun Kim ),이경천 ( Kyung Cheon Lee ) 대한마취과학회 2009 Korean Journal of Anesthesiology Vol.57 No.3
Background: This study was designed to assess the effects of pneumoperitoneum and positional changes on the autonomic nervous system (ANS) in laparoscopy-assisted vaginal hysterectomy (LAVH) patients. Methods: Systolic blood pressures and R-R interval were recorded for 5 minutes in 22 patients, and then power spectral analyses were conducted to evaluate the ANS. The following variables were measured at various positions: preinduction (BASE), prepneumoperitoneum (PREPP), pneumoperitoneum at head-down (PP), normoperitoneum at supine (POSTPP). Results: High frequency of heart rate variability (HRVHF), Low frequency of heart rate variability (HRVLF), Low frequency of blood pressure variability (BPVLF), LF/HF ratios of HRV (LFHFr) were significantly lower than that of BASE at PREPP. HRVHF, HRVLF, BPVLF were significantly lower than that of BASE at PP. At PP, normalized HF of HRV (nuHF) is significantly lower than that of BASE and normalized LF of HRV (nuLF) is significantly higher than that of BASE and PREPP (P<0.05). LFHFr was significantly lower than that of BASE and significantly higher than that of PREPP at PP. At POSTPP, HRVHF, HRVLF, BPVLF were significantly lower than that of BASE. But, BPVLF at POSTPP was higher than that of PP. Conclusions: We conclude that the pneumoperitoneum and trendelenburg positions caused sympathetic activation in LAVH patients. (Korean J Anesthesiol 2009;57:314∼9)
민홍기,이유미,최윤,이청,조인해,정성량,정월선 대한마취과학회 1999 Korean Journal of Anesthesiology Vol.36 No.2
Background : Epidural pressure is reported to change in accordance with intracranial pressure (ICP). As ICP changes during general anesthesia, it is also possible that epidural pressure may change during general anesthesia. The aim of this study was to obtain trends of epidural pressure change during general anesthesia. Methods: Eighteen patients scheduled for gastrectomy were allocated for this study after obtaining informed consent. Epidural catheter was inserted at T7-8, T8-9 interspace before induction. Catheter was connected to a pressure transducer after calibration. General anesthesia was induced with thiopental sodium (5 mg/kg), succinylcholine (1 mg/kg), followed by 3% enflurane. Anesthesia was maintained with 50% N2O in oxygen and 1∼2% enflurane with vecuronium (0.1 mg/kg). Each patients was mechanically ventilated with tidal volume of 10 ml/kg at a rate of 10 bpm. Epidural pressure was measured before induction, at the time of injection of thiopental sodium, succinylcholine, laryngoscopy, intubtion, surgical incision, and 30 minutes after surgical incision. Stastical analysis was done using repeated measures of ANOVA with Helmert option (p<0.05). Results : Epidural pressure significantly changed dynamically during general anesthesia. Epidural pressures increased at intubation and at 30 minutes after surgical incision when compared with those at the time of laryngoscopy and incision, respectively (p<0.05). Conclusion : Our study indicates that epidural pressures changes dynamically during induction period of general anesthesia and also showed possibility that epidural pressure monitoring could be used instead of more invasive direct ICP monitoring. (Korean J Anesthesiol 1999; 36: 232∼238)