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암성통증치료를 위한 경막외카테테르 거치술중 혈성천자로 발생한 경막외혈종
우성창(Sung Chang Woo),차동석(Dong Suk Cha),강 건( 대한통증학회 1998 The Korean Journal of Pain Vol.11 No.1
We report a case of epidural hematoma occuring after bloody tap during epi-dural catheter for cancer pain control in thrombocytopenic patient. Two hours after epidurl puncture, patient experienced severe back pain and numbness of both legs. Following day, patient complained of motor paralysis and urinary difficulty. Diagnosis utilizing magnetic reasonance imaging, showed epidural hematoma extending from T11 to T12. Thrombocytopenia prevented surgical intervention. Therefore we restored conservative therapy with packed red cell, platelet concentration, steroid and hemostatic, which provided complete neurologic recovery, spontaneously over several days without surgical intervention.
우성창,차동석,강건,백종화,신제균 대한마취과학회 1998 Korean Journal of Anesthesiology Vol.35 No.6
The laryngeal mask airway (LMA) is new method for maintaining the airway and has many advantages such as easy insertion without muscle relaxant, decreasing cardiovascular change, decreasing damage of pharynx and larynx and useful in difficult intubation. It has being increasingly used in the management of difficult airway problems, but has not been widely used in tracheal surgery. A 59 year old woman with tracheal stenosis due to tracheal tumor was admitted for tracheal reconstruction. The stenotic lesion was 5 cm above the carina and the length of the stenotic segment was 2 cm. Anesthetic management should be focus on maintenance of the airway and adequate ventilation with the number 3 sized LMA during the tracheal resection. The tracheal segmental resection and primary end-to-end anastomosis were performed without serious hypoxia and hypercarbia. We discuss the advantages and limitations of the LMA in tracheal surgery. (Korean J Anesthesiol 1998; 35: 1169∼1173)
차하림,손우성,( Suresh Thogiti ),( Rajesh Cheruku ),김재홍 한국공업화학회 2019 한국공업화학회 연구논문 초록집 Vol.2019 No.0
Enhancement of the charge transfer rate at the interfacial region in dye sensitized solar cells (DSSCs) is one of the most important criteria determining cell efficiency. Herein, we report a novel strategy for enhancing charge transfer between dye sensitized active layer and current collector by employing W-doped TiO<sub>2</sub> blocking layer. We propose the graded charge transport blocking layer with deposition W-TiO<sub>2</sub> thin film having different ECB at layer by layer for enhancing the diffusion coefficient and length with suppressing the probability of charge recombination. The graded blocking layer significantly increases the electron transfer rate at the interfacial region between the active layer and current collector. In particular, graded 1-5-7-9 W blocking layer exhibits highest photovoltaic performance of 11.54 % without decreasing VOC, which is 50 % higher than basic DSSCs without blocking layer.