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황성미,이재준,장지수,김기호,김민철,임소영 대한의학회 2014 Journal of Korean medical science Vol.29 No.2
This prospective study aimed to evaluate the satisfaction of patients who participated in the decision-making process for selecting an anesthesia method for surgery; the patients’ preferred role (active, collaborative or passive) in the decision-making; and the patients’ preferred choice of anesthetic method. The study included 257 patients scheduled for simple elective surgeries involving the upper or lower extremities. During the pre-anesthetic visit, patients were informed regarding two methods of anesthesia for their surgeries, and participated in selecting one option. Of the 257 patients, 69.6% preferred a collaborative role, 18.3% and 12.1% preferred an active and a passive role, respectively. Among patients requiring surgery on an upper extremity and on a lower extremity, 64.3% and 51.3% expressed a preference for general anesthesia over regional anesthesia, respectively. After surgery, the majority of our patients were satisfied (93.4%) and felt respected (97.7%). Furthermore, the patients expressed a change in preference for assuming an active role (49.4%) and a collaborative role (43.6%) in the decision-making process for their future anesthesia needs. This study may help to promote patient centered care in a department of anesthesiology.
Two-Band 모델을 이용한 작은 밴드 갭을 가진 Fe(Se1-xTex)2 열전합금의 전기적 수송 특성 분석
황성미,김상일,허민수,이기영,양희선,서원선,김현식 대한금속·재료학회 2023 대한금속·재료학회지 Vol.61 No.2
Environmentally sustainable thermoelectric technologies can be more broadly applied in industriesonce the performance of thermoelectric materials is improved. Several approaches have been proposed toimprove the electronic transport properties of thermoelectric materials. The effects of each approach on theelectronic properties can be evaluated by changes in the band parameters. The Single Parabolic Band (SPB)model has been widely used to determine the effect of different materials engineering strategies on bandparameters, such as the density-of-states effective mass and deformation potential. However, when thematerial has a narrow band gap, the Two-Band (TB) model better describes the changes in band parameters,as it includes the bipolar conduction from the minority carrier band. Here, the band parameters of previouslyreported Fe(Se1-xTex)2 (x = 0, 0.2, 0.6, 0.8, 1) alloys, whose band gap significantly decreases with x, have beenestimated using the SPB and TB models. While the x-dependent band parameters obtained via the SPB modelvaried abruptly with x, all the band parameters estimated by the TB model changed linearly with x. Theabruptness observed in the band parameters of the SPB model can be attributed to artifacts reflected in thesingle band, which occurs when the minority carrier band and band gap change are not included. The bipolarthermal conductivity of Fe(Se1-xTex)2 alloys was also calculated using the TB model, and is understood in termsof changes in the weighted mobility ratio, Hall carrier concentration, and band gap in terms of alloycomposition, x.
Difficult tracheostomy tube placement in an obese patient with a short neck -A case report-
황성미,장지수,Jae In Yoo,Hyung Ki Kwon,이수경,이재준,임소영 대한마취통증의학회 2011 Korean Journal of Anesthesiology Vol.60 No.6
We report a difficult case of tracheostomy in a 34-year-old obese woman with a short neck. The tracheostomy tube placement repeatedly failed because of anatomical changes due to obesity and a short neck, tracheal mucosal swelling due to prolonged intubation, and unexpected false passage; however, it was successfully performed using an endotracheal tube exchanger as a guidewire.