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증례보고 : 경요도전립선절제술 중 발생한 무증상의 심한 희석성 저나트륨혈증
진지현 ( Ji Hyun Chin ),황규삼 ( Gyu Sam Hwang ),김영국 ( Young Kug Kim ),상보현 ( Bo Hyun Sang ),황재현 ( Jai Hyun Hwang ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.53 No.6
The transurethral resection of the prostate (TURP) syndrome is caused by intravascular absorption of an electrolyte-free irrigating fluid during TURP for benign prostatic hypertrophy or prostatic carcinoma. The clinical symptoms and signs include hypertension, bradycardia, respiratory distress, hypotension, nausea, vomiting, confusion, blindness, seizure, coma, hyponatremina, and hypoosmolality. In this case, we incidentally detected very severe dilutional hyponatremia (99 mmol/L) without any symptoms during TURP and immediately took measures to treat TURP syndrome. On the third postoperative day, the hyponatremia had resolved within the normal range. (Korean J Anesthesiol 2007; 53: 815∼8)
외식상품 SNS 구전정보 특성이 신뢰 및 지각된 위험과 구매의도에 미치는 영향에 관한 연구
김혜숙(Kim, Hyeo-Suk),황규삼(Hwang, Gyu-Sam),박대섭(Park, Dae-Sub) 한국외식경영학회 2016 외식경영연구 Vol.19 No.5
본 연구는 외식상품에 대한 SNS의 구전정보특성(동의성, 생생함, 중립성 ,적시성)이 신뢰형성에 어떤 영향을 미치는지를 살펴보고, 외식상품에 대한 신뢰, 지각된 위험, 구매의도 간의 관련성을 조사하고자 하였다. 또한 신뢰와 지각된 위험 간 에 SNS 수신자특성(구전정보 의존성, 구전정보 이용경험)이 조절역할을 하는지를 밝히고자 하였다. 본 연구는 2016년 6월 15일부터 6월 30일까지 서울 지역의 음식점이 밀집해 있는 명동, 홍대입구, 강남역 근처에서 진행되었다. SNS를 통해 외식정보를 접해 본 경험이 있는 외식소비자를 대상으로 250부의 설문지를 배포하여 유효한 자료 216부를 실증분석에 사용하였다. 분석결과를 살펴보면 다음과 같다. 첫째, 외식상품 SNS 구전정보특성 중 생생함, 중립성, 적시성 순으로 신뢰에 유의한 정(+)의 영향을 미치는 것으로 나타났으며, 동의성은 신뢰에 유의한 정(+)의 영향을 미치지 않는 것으로 나타났다. 둘째, SNS 상에서의 외식상품에 대한 신뢰는 지각된 위험에 유의한 부(-)의 영향을 미치는 것으로 나타났다. 셋째, SNS 상에서의 외식상품에 대한 지각된 위험은 구매의도에 유의한 부(-)의 영향을 미치지 않는 것으로 나타났다. 넷째, SNS 수신자특성 중 SNS 구전정보 의존성은 신뢰와 지각된 위험 간에 조절역할을 하는 것으로 나타났으나, SNS 수신자특성 중 SNS 구전정보 이용경험은 신뢰와 지각된 위험 간에 조절역할을 하지 않는 것으로 나타났다. The purpose of this study was to verify the effects of SNS WOM characteristics in restaurant food on trust, perceived risk, and purchase intention. In addition, the moderating role of SNS receivers characteristics were also examined between trust and perceived risk. This survey was conducted from 15th to 30th on June, 2016 among SNS using convenience sampling method near the Myeong dong, Hongik University, Gang Nam in Seoul. A total of 250 responses was collected, of which 216 were used for analysis, after excluding responses containing missing data. Multiple regression and moderated regression were conducted to verify hypotheses. The results from this study are as follows. First, it was found that vividness, neutrality, and timeliness of SNS WOM characteristics had a significant positive effect on trust of restaurant food. However, the consensus of SNS WOM characteristics did not have a significant positive effect on trust of restaurant food. Next, trust of restaurant food had a significant negative effect on perceived risk. Third, perceived risk did not have a significant negative effect on purchase intention. Last, instrumentality on eWOM information in SNS found to moderate the relationships between trust and perceived risk. However, usage experience of eWOM in SNS did not have a moderating role relationship between trust and perceived risk.
각성 상태와 전신마취 중 Sigmoid 압반사 커브 변화 양상의 비교
강수진 ( Su Jin Kang ),황규삼 ( Gyu Sam Hwang ) 대한마취과학회 2009 Korean Journal of Anesthesiology Vol.56 No.4
Background: Volatile anesthetics have been shown to decrease baroreflex. In humans, cardiovagal baroreflex curve is best described to be sigmoidal and analysis of sigmoid model can provide more information, such as threshold (THR), saturation (SAT), maximal gain (Gmax), operating range (OR, difference between THR and SAT), operational point (OP, relative position of resting set point within the OR) in addition to the linear gain. We compared the changes in the sigmoid model of the systolic blood pressure (SBP)-RR interval relation between awake state and general anesthesia. Methods: Sigmoid curve was obtained using the `modified Oxford technique` (bolus sodium nitroprusside followed by bolus phenylephrine) to perturb SBP in awake group and 2 vol% sevoflurane anesthesia group. Radial arterial beat-by-beat SBP and raw RR interval data points were plotted and then binned in 2 mmHg SBP increments. Curve fittings were performed using symmetric four-parameter sigmoid model and asymmetric five-parameter sigmoid model. Gmax was calculated from the first derivative of the logistic function. Results: Compared with awake control, general anesthesia caused decreases of linear gain, Gmax and OR. RR interval THR and SBP THR were unaffected, whereas SBP SAT increased and RR interval SAT decreased, resulting from reduced linear gain and curvature parameter. Resting set point fell and OP shifted significantly to THR region. Conclusions: Sigmoidal baroreflex curve revealed diminished gains, OR and OP during general anesthesia. Moreover, our results demonstrate that the analysis of sigmoid baroreflex arc across the entire baroreflex range provide more unique information beyond that of linear gain. (Korean J Anesthesiol 2009;56:363~70)
외식창업자의 창업성공요인이 창업성공 및 창업권유에 미치는 영향
신충섭(Shin, Chung-Sub),황규삼(Hwang, Gyu-Sam),김혜숙(Kim, Hye-Sook) 청운대학교 관광산업연구소 2015 관광산업연구 Vol.9 No.2
This research analyzes the effect of a restaurant founder’s success factors on successful business and suggestion of commencement. The purpose of this report is to suggest entrepreneur’s business establishing strategies and implications based on the result. The analysis of the collected are the following: First of all, by using a multiple regression analysis on how a restaurant’s success factors influence the success of commencement, four variables have been identified to be related to the success. They are goal directedness, activeness, risk-taking tendency, and confidence and study directivity. As a result, rest of the variables - empowerment, usage of technology, teamwork and other factors - have been omitted. Second, a multiple regression analysis is used to find out the impact on suggestion of commencement, and confidence, research directedness, risk-taking tendency, usage of information, empowerment, object directedness and other factors are found out to be related while other variables - assertiveness and teamwork - have been disregarded. Third, a simple regression analysis is used to find out the effect of success of commencement on suggestion of it. As a result, the variable which has an impact on the suggestion was turned out to be the factors of success of commencement itself.
증례보고 : 중뇌동맥 경색증 환자의 마취유도 직후 경식도 심초음파에 의해 진단된 좌심방 혈전 -증례보고-
송준걸 ( Jun Gol Song ),황규삼 ( Gyu Sam Hwang ),김영국 ( Young Kug Kim ),성승혜 ( Seung Hye Sung ),최인철 ( In Cheol Choi ),황재현 ( Jai Hyun Hwang ),조성강 ( Sung Kang Cho ),한성민 ( Sung Min Han ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.52 No.6
Stroke is one of the most common causes of death; in particular, cardiac source of embolism may be responsible for 15-20% of ischemic strokes. Here we report a case of left atrial thrombus diagnosed by transesophageal echocardiography (TEE) immediately after induction of general anesthesia in a patient with infarction of the middle cerebral artery. In this case, an emergent craniectomy was cancelled and medical treatment was performed. This case report shows that TEE taken in the operating room may play an important role in the change of treatment plan in a patient displaying acute mental change. (Korean J Anesthesiol 2007; 52: 702~6)
응급 간이식이 요구되는 전격성 간부전 환자들에게서 Bispectral Index Monitoring을 이용한 이식 전후 의식상태의 지속적인 평가의 유용성
박정익(Jeong-Ik Park),황신(Shin Hwang),이승규(Sung-Gyu Lee),황규삼(Gyu-Sam Hwang),김기훈(Ki-Hun Kim),안철수(Chul-Soo Ahn),문덕복(Deok-bok Moon),하태용(Tae-Yong Ha),송기원(Gi-Won Song),정동환(Dong-Hwan Jung),유제호(Je-Ho Ryu),이효준(Hyo 한국간담췌외과학회 2008 한국간담췌외과학회지 Vol.12 No.1
Purpose: Deterioration of consciousness is the most critical problem in patients with fulminant hepatic failure (FHF). Electroencephalography (EEG) is a standard procedure to determine the brain activity in unconscious patients. The bispectral (BIS) index derived from EEG was primarily developed to monitor the depth of unconsciousness. Methods: A prospective study was performed to assess the clinical utility of peritransplant BIS monitoring in 11 fulminant hepatic failure (FHF) patients who were undergoing emergency living donor liver transplantation (LT) with using a right liver graft. All the patients recovered their consciousness after LT. Results: There was a significant correlation between the BIS index values and the derived GCS score (r2=0.634, p <0.001). Timing of eye opening to voice command matched the BIS index value of 64±9.5, which was after 14±9.4 hours passing BIS index of 50. All the patients with endotracheal intubation during the early posttransplant period showed progressive increase of their BIS index, which appeared slightly earlier and more evident than the rise of derived GCS scores. Conclusion: BIS monitoring is a noninvasive, simple and easy-to-interpret method and it also appears to be a useful to assess and predict the recovery of a patient’s consciousness level after LT. Therefore, we concluded that BIS monitoring can be an indispensable component of the peritransplant intensive care for patients with FHF and who require emergency LT.
증례보고 : 근치적 신적출술과 하대정맥 혈전제거술 시 발생한 치명적인 심장 및 폐색전증
진지현 ( Ji Hyun Chin ),이유미 ( Yu Mi Lee ),김영국 ( Young Kug Kim ),황규삼 ( Gyu Sam Hwang ),황재현 ( Jai Hyun Hwang ),조성강 ( Sung Kang Cho ),한성민 ( Sung Min Han ) 대한마취과학회 2007 Korean Journal of Anesthesiology Vol.52 No.5
Intraoperative pulmonary embolism can result in severe hemodynamic instability, including cardiac arrest. Therefore, immediate diagnosis and proper treatment are required. We report a case of the acute cardiac and pulmonary embolisms during radical nephrectomy and inferior vena cava (IVC) thrombectomy in a patient with renal cell carcinoma with thrombus in the IVC. We diagnosed the cardiac embolism intraoperatively using the transesophageal echocardiogram, and performed emergent cardiac and pulmonary embolectomies immediately. After the surgery, the patient was discharged without any complication. (Korean J Anesthesiol 2007; 52: 600~4)
증례보고 : 목동맥 내막 절제술 재관류 시 생긴 저혈압에 대한 목동맥 팽대신경 차단의 혈역학적 효과
강수진 ( Su Jin Kang ),신원정 ( Won Jung Shin ),황규삼 ( Gyu Sam Hwang ) 대한마취과학회 2006 Korean Journal of Anesthesiology Vol.51 No.5
Carotid sinus nerve blockade (CSNB) has been shown to be effective for management of post-carotid endarterectomy (CEA) hypotension. The underlying hemodynamic changes are unknown. We retrospectively analyzed a recorded arterial blood pressure (ABP) waveform using a Modelflow technique. After declamping, total peripheral resistance (TPR) decreased (-65% of predeclamping value), but cardiac output (CO) and stroke volume (SV) increased (+60 and +57% of predeclamping value, respectively). CSNB abruptly increased blood pressure (BP) and TPR (75 and 95% of nadir, respectively), while CO and SV gradually decreased to -21 and -16% of maximum value, respectively). In conclusion, we found that severe decline of TPR was a cause of severe hypotension after declamping and CSNB increased BP mainly through increase in TPR, with little change in CO and SV. (Korean J Anesthesiol 2006; 51: 651~4)