Jae Seung Yoon
Wonkwang University
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Journal of Clinical Anesthesia | 1999
Young-Pyo Cheong; Soo-Kyung Park; Yong Son; Kang-Chang Lee; Yong-Kang Song; Jae Seung Yoon; Tai-Yo Kim
STUDY OBJECTIVES To compare the incidence of gastroesophageal reflux and regurgitation associated with laryngeal mask airway (LMA) removal when signs of rejecting the LMA, such as swallowing, struggling, and restlessness, were observed and when the patient could open his or her mouth on command. DESIGN Randomized clinical trial. SETTING Operating room and recovery room of a tertiary care referral hospital. PATIENTS 63 ASA physical status I and II adult patients scheduled for elective orthopedic surgery. INTERVENTIONS Using a standardized general anesthetic technique, patients were allocated randomly to Group A (n = 34; LMA removed when signs of rejection, such as swallowing, struggling, and restlessness, were observed) or Group B (n = 29; LMA removed when the patient could open his or her mouth on command). MEASUREMENTS AND MAIN RESULTS To detect gastroesophageal reflux throughout anesthesia, a pH monitoring probe was positioned in the lower esophagus on the day before surgery. To assess regurgitation during emergence, a gelatin capsule of methylene blue (50 mg) was swallowed prior to induction. At the end of anesthesia, episodes of reflux and regurgitation of gastric contents were analyzed/determined by pH below 4 and bluish staining of the pharynx and/or LMA, respectively. Physical events such as bucking, straining, and coughing during the arousal phase were recorded in both groups by an independent observer. The incidence of reflux (pH < 4) from the time of the appearance of rejection signs to LMA removal and the total incidence of reflux in Group B were significantly higher than in Group A (p < 0.05). Staining of the LMA and the pharynx by methylene blue was not observed in patients from either experimental group. The number of physical events in Group B during the arousal phase was significantly increased compared to Group A (p < 0.05). Considering all patients in Group A and Group B, physical events were associated with the occurrence of reflux (p < 0.05). Desaturation (SpO2 < 95%) and clinical evidence of aspiration of gastric contents did not occur in either group. CONCLUSION Maintenance of the LMA until the patient can open his or her mouth on command increases the incidence of gastroesophageal reflux.
Korean Journal of Anesthesiology | 2000
Yong Son; Kyoung Il Kim; Yu Sun Choi; Young Pyo Cheong; Tai Yo Kim; Jae Seung Yoon
Anesthesiology | 1998
Young-Pyo Cheong; Soo-Kyung Park; Yoon-Kang Song; Jae Seung Yoon; Tai-Yo Kim
Korean Journal of Anesthesiology | 2002
Yong Yong; Soo Kyung Park; Young Pyo Cheong; Jeong Hun Kim; Hyang Yee Kim; Tai Yo Kim; Jae Seung Yoon
Korean Journal of Anesthesiology | 2000
Jeong Ryang Ha; Young Pyo Cheong; James Kim; Duk Hwa Choi; Chang Su Lee; Yong Son; Tai Yo Kim; Yoon Kang Song; Jae Seung Yoon
Korean Journal of Anesthesiology | 2000
Yong Son; Jin Young Ahn; Yu Sun Choi; Yoon Kang Song; Jae Seung Yoon; Tai Yo Kim; Young Pyo Cheong
Korean Journal of Anesthesiology | 1999
Yong Son; Jeong Ryang Ha; Duk Hwa Choi; Young Pyo Cheong; Jae Seung Yoon
Anesthesiology | 1998
Young-Pyo Cheong; Soo-Kyung Park; Yong-Ho Nah; Jae Seung Yoon; Tai-Yoo Kim
Korean Journal of Anesthesiology | 1994
Tae Hoon Lee; Tae Yo Kim; Jae Seung Yoon; Bong Kyu Choi
Korean Journal of Anesthesiology | 1991
Jung Doo Oh; Yoon Kang Song; Jae Seung Yoon