성인 남자에서 척추경막외 천자침을 사용시 피부에서 경막외강과 지주막하강까지의 거리

송광수,송민엽,임경준,정종달,김용일,송성용 朝鮮大學校 附設 醫學硏究所 1996 The Medical Journal of Chosun University Vol.21 No.1

The purpose of the present study was to examine and evaluate the distance from the skin to the epidural space, to the subarachnoid space and the epidural width using a combined spinal-epidural technique. And to evaluate the correlation with age, height, weight and the ponderal index (PI= weight/height ratio). Combined spinal-epidural anesthesia was performed on 30 males in the ASA class I-II patients scheduled for lower extremity surgery. The age, height, weight and PI were recorded. The epidural space was identified using midline approach at the L_(3-4) interspace with an 18G Tuohy needle and the spinal needle was introduced through the Tuohy needle. After free flow of cerebrospinal fluid. 3ml of 0.5% heavy bupivacaine was injected into the subarachnoid space. We used following parameters : the distance from the skin to the tip of the Tuohy needle (skin to epidural space : SE) and to the distal aperture of the spinal needIe (skin to subarachnoid space : SS) and the distance from recognition of negative pressure to free flow of cerebrospinal fluid (epidural width : EW) were measured. Afber measurement, the spinal needle was withdrawn and the epidural catheter was inserted. The mean SE, EW and SS were found to be 4.74 cm, 0.79 cm and 5.53 cm respectively, which significantly correlated with the weight and PI, but not with age and height. It is concluded that if the SE, SS and EW are predictable after weight and the PI are measured, an accurate placement of the epidural needle into epidural space may reduce the complications of spinal or epidual anesthesia as well as providing a safe anesthetic management.

RIASEC 모형에 따른 고등학생들의 진로흥미와 진로성격 요인의 탐색

조현철,송광수 대한사고개발학회 2019 사고개발 Vol.15 No.3

This study explores the factors of vocational interests and vocational personality, and the relations between the two vocational constructs. The questionnaires on vocational personality and interests based on Holland's six vocational interest dimensions were developed, and administered to the 179 10th graders of a highschool in G city. A series of exploratory factor analyses showed vocational interests and personality have realistic, investigative, artistic, social, enterprising and conventional factors respectively. And correlational analyses provided further evidence of mutual independence among the 6 factors of the vocational interests and personality. Moreover, correlational patterns among the 6 factors of vocational interests and vocational personality turned out to be generally matched. And each correlation between the 6 interest and personality factors was high to moderate, but not high enough to guarantee the convergence of each of them. All these results suggest that the separate vocational interests and vocational personality factors according to RIASEC model will be useful for predicting the students’ vocational development and attitude. 본 연구는 Holland의 RIASEC 모형에 의거하여 진로흥미와 진로성격 요인을 확인하고 양 변인 간 관련성을 탐구하였다. 실재형, 탐구형, 예술형, 사회형, 기업가형, 관습형에 해당하는 진로흥미와 진로성격을 개념적으로 구분하고 이를 측정하는 검사지를 제작하였다. 이어서 이를 G시의 한 고등학교 1학년 8개반 학생들에게 실시하여 179명 응답자의 자료를 분석하였다. 검사자료에 대한 탐색적 요인분석의 결과는 진로에 대한 흥미와 성격이 실재형, 탐구형, 예술형, 사회형, 기업가형, 관습형의 요인들로 구성될 수 있음을 시사하였다. 그리고 진로흥미와 진로성격 별로 각각 실시된 각 요인 간 상관분석의 결과, 진로흥미와 진로성격 모두에서 각 하위요인은 상호독립적인 성격을 갖는 것으로 나타났다. 또한 이러한 RIASEC의 각 요인 간 상관은 진로흥미와 진로성격에서 대체로 대응성 있는 패턴을 나타냈으며, 6개 각 요인의 흥미와 성격 간 상관계수는 상당히 높은 편이었으나 동일한 요인으로 간주될 만큼의 정도는 아니었다. 이러한 결과는 진로에 관련한 학생들의 흥미와 성격은 RIASEC 모형의 틀로 이해될 수 있는 개인특성의 서로 다른 면으로서, 유용한 독자적 설명력을 갖는 것으로 볼 수 있음을 시사한다.

수술중 진단된 갈색세포종 환자의 마취관리 : 증례 보고

임대원,송광수,임경준,정종달 朝鮮大學校 附設 醫學硏究所 1997 The Medical Journal of Chosun University Vol.22 No.1

We have experienced an anesthetic management of a 14 year-old male patient with a retroperitoneal tumor undiagnosed as pheochromocytoma. It was reported that in cases where a patient with undiagnosed pheochromocytoma was operated on, the mortality rate could reach 25% to 50%. During the manipulation of the tumor, serious hypertension and tachycardia were developed, making us suspect the existence of a pheochromocytoma. Anesthesia was managed with thiopental and succinylcholine for induction, enflurane-nitrous oxide-oxygen for maintenance, vecuronium for muscle relaxation, nitroglycerine and hydralazine for controlling severe hypertensive episode and esmolol for controlling severe tachycardia. After tumor resection, severe hypotension was controlled by Hartmann's solution, ephedrine and dopamine administration. Postanesthetic recovery and course were uneventful.

기관내 튜브 기낭에 의한 기도 폐쇄

임경준,정종달,송광수,송민엽 대한마취과학회 1996 Korean Journal of Anesthesiology Vol.31 No.3

A thirty nine year-old male patient was scheduled for emergent craniotomy and epidural hematoma evacuation under general anesthesia. All data of the preoperative check lists for emergent operation were within normal limits and vital signs of the patient were stable. During the induction of anesthesia an armored tube was inserted into the trachea for this operation. Approximately 110 minutes after the induction of anesthesia, signs of complete airway obstruction developed abruptly. At that time we deflated the cuff balloon to exchange the tube. Then, the signs of airway obstruction disappeared completely. Therefore the deflation of cuff balloon is recommended in order to exclude the obstruction by the displaced cuff.

전신 마취중 사용한 Clonidine이 혈압, 맥박 및 혈중 Catecholamine 농도에 미치는 영향

임경준,정종달,송광수 대한마취과학회 1997 Korean Journal of Anesthesiology Vol.33 No.2

Background : Induction of general anesthesia with tracheal intubation and skin incision are potent stimuli that can induce increased sympathetic activity, heart rate and blood pressure. We compared the hemodynamic response and catecholamine concentration during general anesthesia with intravenous clonidine pretreatment, a centrally acting -2 adrenoceptor agonist, and without pretreatment. Methods : Forty ASA I or II patients aged from 20 to 60 years undergoing elective surgery were randomly allocated to two groups. In group I, 5 ml of 0.9% normal saline as control administered intravenously 10 minutes before induction of anesthesia, and anesthesia was induced with thiopental sodium, succinylcholine and maintained with N2O(2.5L/min)-O2(2.5L/min)-enflurane(1.3∼1.8 vol%). In group II, 4 g/kg clonidine diluted in 5ml of normal saline administered intravenously 10 minutes before induction of anesthesia, and anesthesia was induced with thiopental sodium, succinylcholine and maintained with N2O-O2-enflurane(0.5∼0vol%) and 2 g/kg/hr clonidine was continuously infused. We measured blood pressure, heart rate and plasma catecholamine at preinduction, 1 minute after intubation(T1), 1(T2) and 30 minutes after skin incision(T3) and compared with group I. Results : There was statistical significance in systolic and diastolic pressure at T1 between two groups. There was statistical significance in heart rate, epinephrine and norepinephrine at T1, T2 and T3 between two groups. Conclusion : The elevation of blood pressure, heart rate and plasma catecholamine accompanying tracheal intubation and skin incision may be prevented by administration of intravenous clonidine. (Korean J Anesthesiol 1997; 33: 336∼341)

로켓 엔진용 분사기의 브레이징 접합특성 연구

길아름(Ahleum Gil),송광수(Kwangsu Song),이혁(Hyok Lee),이병호(Byungho Rhee),김종규(Jonggyu Kim),최환석(Hwanseok Choi) 한국추진공학회 2013 한국추진공학회 학술대회논문집 Vol.2013 No.5

본 연구에서는 액체로켓 연소기 및 가스발생기 Injector용 소재로 사용되는 UNS S31603을 사용하여 브레이징 접합시간에 따른 접합현상과 기계적 특성을 평가하고자 하였다. UNS S31603을 모재로, 용가재 MBF-80을 사용하여 브레이징 접합온도를 일정하게 유지한 후, 접합시간을 변화시켜 각 조건에서의 접합부위의 조직학적 현상과 인장강도 등의 기계적 특성을 고찰하였다. In this research, it was proposed to evaluate the mechanical properties and the joint condition depending on time of brazing joint using UNS S31603 which is employed as a material of the injector in thrust chamber and gas generator of liquid rocket engine. Using MBF-80 as a filler metal, and with the brazing temperature being fixed, phase change which is generated by the reaction between UNS S31603 and filler metal and mechanical properties were observed diversely in consequence of brazing time variation.

만성신부전으로 혈액투석중인 상염색체 우성 다낭종 신질환에 병발한 신세포암 1예

허성호,김성록,박정원,강동오,김재희,신상곤,구진하,송광수 대한신장학회 1999 Kidney Research and Clinical Practice Vol.18 No.5

The development of renal cell carcinoma in auto-sornal dominant polycystic kidney disease hemodialyzed was rarely found. A sixty-six year old man has been hemodialyzed for four years. His end-stage renal failure was caused by autosomal dominant polycystic kidney disease. He presented the sudden onset of gross hematuria which does not cause any pain. Radi-ological examination showed the possibility of renal cell carcinoma in autosomal dominant polycystic kidney disease. The renal cell carcinoma was confirmed through nephrectomy and pathological examination. In this article, we present a case of renal cell carcinoma in autosomal dominant polycystic kidney disease hemodialyzed.

대장내시경 검사 직후 복통 완화를 위한 직장관 사용의 유용성

김호진,장재권,박찬원,박정원,윤종보,김정구,송광수,이인범,조용호,허성호 대한소화기내시경학회 1999 Clinical Endoscopy Vol.19 No.1

Background/Aims: Abdominal distension from the insufflation of air can create more troublesome discomfort after colonoscopy (CFS) than after upper endoscopy. Many patients report difficulty in expelling insufflated air after CFS. One previous study demonstrated that insertion of rectal tube at the conclusion of CFS significantly improves patient satisfaction with the procedure. The aim of this study was to compare the effectiveness of rectal tube placement for abdominal decompression after CFS in an effort to limit patient discomfort by carefully applying air suction during CFS. Methods: We conducted a prospective trial in 103 consecutive patients undergoing elective CFS. Patients were randomized to receive rectal tube placement at the end of the procedure or simple air suction during the procedure. Patients were evaluated by clinical symptoms and signs 10 minutes after completion of CFS. Results: All 103 patients had a complete examination of the colon to the cecum. No specific complications occurred during and a day after examination. The two groups were well matched with respect to age, sex, height, weight, chief complaints. There were no significant differences between the two groups for bowel preparation, duration of examination, abdominal pain during procedure, abdominal disten-sion 10 minutes after CFS, and abdominal pain 10 minutes after CFS (p >0.05). Conclusions: Meticulous air suction during CFS reduces abdominal discomfort and distension after CFS and is as effectively as the placement of a rectal tube at the con-clusion of CFS.