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제왕절개술후 발생한 뇌출혈과 산후뇌혈관병증 -증례 보고-
이재우,강효석,임태하,김유진 대한마취통증의학회 2012 Anesthesia and pain medicine Vol.7 No.4
The occurrence of stroke during pregnancy and the postpartum period is uncommon but is a leading cause of maternal death. Postpartum cerebral angiopathy is one of the causes of the occurrence of stroke during peripartum. A 39-year-old woman with a gestational age of 38 weeks and with uncomplicated pregnancy was admitted to these authors’ hospital and was made to undergo emergency Cesarean section under spinal anesthesia due to fetal distress. After the Cesarean delivery, it was found that her state of mind had changed into drowsiness to stupor in the post-anesthetic care unit. The brain computed tomography showed intracranial and subarachnoid hemorrhage. On the cerebral angiography, no aneurysm or arteriovenous malformation was found, except for the focal stenosis of the callosomarginal artery. Emergency decompressive craniectomy was done. After the craniectomy, the patient showed an alert mental status, mild Rt hemiplegia, and slight dysarthria three months after the surgery.
이동명,최규택,박정원,서병태,임태하 대한마취과학회 1997 Korean Journal of Anesthesiology Vol.33 No.3
Background : It has been a standard practice in many institutions to combine light general anesthesia with epidural block for abdominal and pelvic surgery. We attempted to prove the effectiveness of prehydration and to find an suitable epidural local anesthetic dose in terms of hemodynamic stability for upper abdominal surgery. Methods : For preliminary studies, 11 patients scheduled for elective upper abdominal surgery had received general anesthesia immediately after epidural anesthesia. After epidural injection of 10∼16 mL of 2% plain lidocaine into the T9∼10 intervertebral space, the changes in blood pressure were observed. Thirty-two patients scheduled for elective upper abdominal surgery were divided into two groups. In group A(study group), after prehydration with Hartmann solution(10 mL/kg), 5∼7 mL of 2% plain lidocaine was injected into T8∼9 or T9∼10 intervertebral space and general anesthesia was then induced. Group B(control group) received general anesthesia only. Results : There were no signnt differences in hemodynamics between the epidural with general anesthesia and the control group except SVR(systemic vascular resistance). SVR in group A increased in contrast to the group B in which it remained unchanged. Conclusions : The combined epidural and general anesthesia, using prehydration and 0.5∼1 mL/segment of 2% plain lidocaine at the T8∼9 or T9∼10 intervertebral space was safe without significant hemodynamic changes. (Korean J Anesthesiol 1997; 33: 472∼476)
60세 이상 환자에서 척추마취 동안 propofol을 이용한 진정 깊이 정도에 따른 수술 후 인지기능장애 발생
이재우,강효석,백승민,박혜진,임태하 대한마취통증의학회 2015 Anesthesia and pain medicine Vol.10 No.3
Background: Postoperative cognitive dysfunction (POCD) is a common perioperative complication. The definitive causes of POCD have not been identified, but depth of anesthesia or sedation has been reported to influence POCD. The purpose of the present study was to assess the possible effect of the level of sedation on POCD at 1 week after surgery under spinal anesthesia in elderly patients. Methods: We included 48 patients aged over 60 years, who were scheduled for elective knee and hip joint surgery under spinal anesthesia. Those patients were randomly allocated to one of the 2 groups: deep sedation group and light sedation group. The depth of sedation was monitored by entropy and observer’s assessment of alertness/sedation (OAA/S) score. Cognitive function was assessed by 5 neurocognitive tests before and at 1 week after surgery. A postoperative deficit was defined as a postoperative decrement to preoperative score greater than 1 standard deviation on any test. A patient whose postoperative performance deteriorated by 1 or more standard deviations on 2 or more tests was classified as having experienced POCD. Results: POCD occurred in 7 patients (28%) in the deep sedation group and in 4 patients (17.4%) in the light sedation group. The incidence of the POCD was not significantly different between the 2 groups. Conclusions: We were unable to detect a significant association between the depth of sedation and the presence of POCD at 1 week after surgery under spinal anesthesia.
신경병증 백서에서 척수신경절 신경원의 Capsaicin에 대한 반응성 및 나트륨 전류의 변화
신광일,임정길,이정락,임태하,김종욱,황재현 대한마취과학회 1998 Korean Journal of Anesthesiology Vol.35 No.2
Background : Allodynia, one of the most debilitating symptoms of neuropathic pain syndromes, can be defined as `pain due to a stimulus that does not normally provoke pain'. Subsets of dorsal root ganglion (DRG) neurons involved in nociception are characteristically expressed capsaicin sensitivity and high proportion of tetrodotoxin resistant sodium current (TTX-R INa). We performed an experiment to elucidate whether nerve injury induced mechanical allodynia could be resulted from elctrophysiological modulation of large, nonnociceptive afferent neurons to nociceptors. Methods : Whole cell patch clamp recordings were made from acutely dissociated dorsal root ganglion (DRG) neurons of normal and experimental neuropathic rats. We compared the proportion of capsaicin sensitive neurons which responded to capsaicin (1uM) with an inward current ≥ 100 pA in amplitude and the proportion of sodium channel subtypes measured in the absence and presence of tetrodotoxin (1 M), in small and large DRG neurons. Results : Th proportion of capsaicin sensitive cells to total number of cells tested was not changed by nerve injury in both small and large cell populations. In large cell population of nerve injured rats, the proportion of TTX-R INa was significantly increased as compared with normal group (p<0.05), and in small cell population of nerve injured rats, TTX-S INa was increased, but there was no statistical significance. Conclusions : These data indicate that expression of the sensitivity to capsaicin in DRG neurons would not be altered by nerve injury and increased TTX-R INa in large cell population of nerve injured DRG may underlie increased excitability. (Korean J Anesthesiol 1998; 35: 259∼268)
임달재,구정훈,김연준,조상우,조윤경,임태하,이혜선,김현정,강윤주 대한재활의학회 2015 Annals of Rehabilitation Medicine Vol.39 No.3
Objective To improve lower extremity function and balance in elderly persons, we developed a novel, three-dimensional interactive augmented reality system (3D ARS). In this feasibility study, we assessed clinical and kinematic improvements, user participation, and the side effects of our system.Methods Eighteen participants (age, 56–76 years) capable of walking independently and standing on one leg were recruited. The participants received 3D ARS training during 10 sessions (30-minute duration each) for 4 weeks. Berg Balance Scale (BBS) and the Timed Up and Go (TUG) scores were obtained before and after the exercises. Outcome performance variables, including response time and success rate, and kinematic variables, such as hip and knee joint angle, were evaluated after each session. Results Participants exhibited significant clinical improvements in lower extremity balance and mobility following the intervention, as shown by improved BBS and TUG scores (p<0.001). Consistent kinematic improvements in the maximum joint angles of the hip and knee were observed across sessions. Outcome performance variables, such as success rate and response time, improved gradually across sessions, for each exercise. The level of participant interest also increased across sessions (p<0.001). All participants completed the program without experiencing any adverse effects.Conclusion Substantial clinical and kinematic improvements were observed after applying a novel 3D ARS training program, suggesting that this system can enhance lower extremity function and facilitate assessments of lower extremity kinematic capacity.
UX(사용자 경험)분석을 통한 앱 인터페이스 개선에 관한 연구 - 대학생 학사관리 사이트를 중심으로
김예람(Yea Ram Kim),서원영(Won Young Seo),임성빈(Seong Bin Im),임태하(Tae Ha Lim),이원섭(Won Seop Lee) 한국HCI학회 2021 한국HCI학회 학술대회 Vol.2021 No.1
This study aims to research and propose a mobile application interface design prototype for college student’s academic management from the user’s point of view. Interviewing users who have experienced the student website of Handong University to which the research team belongs, the academic management system (HISNet) is causing inconvenience in terms of visibility, accessibility, and ease of use, and is not optimized for mobile size and not providing personalized information. Based on the user’s experience, we designed a new app interface and applied the Kansei engineering theory to conduct the user test from an emotional engineering perspective. This study’s significance is that it finds problems from students’ experiences who are the primary agents of the use of the academic management system and that it is a design designed directly by students.