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아두 분만시 빠른 호흡을 통한 새로운 분만방법이 산도열상에 미치는 영향
최영삼(Young Sam Choi),송태복(Tae Bok Song),김윤하(Yoon Ha Kim),이경민(Kyung Min Lee),김혜정(Hye Jung Kim),나재호(Jae Ho Na),변지수(Ji Soo Byun) 대한산부인과학회 2002 Obstetrics & Gynecology Science Vol.45 No.3
Objective: This study was conducted to evaluate the effect of new delivery method of fetal head on the vaginal and perineal laceration at vaginal delivery. Methods: In this prospective clinical trial of 291 parturients with singleton pregnancy at or more than 37 weeks' gestation, pregnant women were radomely assigned to classical delivery method (control group)or new delivery method (study group)of the fetal head from September 1999 to August 2000 at Chonnam National University Hospital. The frequency and degree of vaginal and perineal lacerations at vaginal delivery Results: Perineal lacerations of the 3rd or 4th degree was developed in 20 women (13.8%) among 145cases of control group and 6 women (4.1%) among 146 cases of study group (p<0.01).Vaginal wall laceration was developed in 55 women (37.9%)of the control group and 37 women (25.3%)of the study group (P <0.01). The incidence of the laceration of perineum and vaginal wall was significantly lower in the study group than Conclusion: The new delivery method of fetal head was effective for reducing the laceration of perineum and vaginal wall at full-term vaginal delivery.
컴퓨터 단층 촬영으로 진단된 미세 폐 전이가 임신성 융모종양의 예후에 미치는 영향
김석모(Seok Mo Kim),김기민(Ki Min Kim),최영삼(Young Sam Choi),김윤하(Yoon Ha Kim),최호선(Ho Sun Choi),변지수(Ji Soo Byun) 대한산부인과학회 1999 Obstetrics & Gynecology Science Vol.42 No.11
Objective: CT scan is more accurate method than chest X-ray for detecting small pulmonary metastasis in GTT. About 40% of nonmetastatic GTT based on conventional chest X-ray have pulmonary metastasis detected by CT scan. However, prognostic significance of small pulmonary metastasis detected only by CT scan is not well determined. The purpose of our study is to know whether small pulmonary metastasis detected only by CT scan affect treatment outcome worse or not. Methods: Forty eight GTT patients without any metastasis and eleven GTT patients with lung metastasis as determined by conventional GTT staging studies were evaluated with CT scan of the lungs before treatment between 1989 and 1998. A total of fifty nine GTT patients were classified into true nonmetastatic and micrometastatic groups based on CT scan finding, and nonmetastatic and metastatic groups based on conventional chest X-ray finding. They all received methotrexate therapy except three patients with high risk WHO score. All their medical records were reviewed to detect any differences in the treatment outcome and prognostic factors according to the groups. Results: Fifteen of forty eight patients(31.2%) had pulmonary micrometastasis detected by CT scan. Three of thirty three patients(9.09%) in the true nonmetastatic group failed initial therapy with methotrexate while two of fifteen patients(13.3%) in the micrometastatic group failed initial therapy(p value: 0.642). Five of forty eight patients(10.41%) in the nonmetastatic group failed initial therapy while one of eleven patients(9.09%) in the metastatic group failed initial therapy(p value: 1.00). All patients who failed initial methotrexate therapy finally achieved remission with EMACO therapy regardless of their groups. There was no statistically significant difference in the other prognostic parameters among the groups. Conclusion: CT scan was a more sensitive imaging tool than chest X-ray for detecting pulmonarymetastasis in GTT. But lung micrometastasis detected by CT scan had no significant impact on the clinical outcome of patients with GTT, chest X-ray is adequate method for the detection of lung metastasis.
근치적 자궁적출술을 시행한 자궁경부암 Ib-IIa 환자에서 예후 인자
김석모(Suk Mo Kim),유재두(Jae Doo Yoo),김병룡(Byung Ryong Kim),최영삼(Young Sam Choi),정성일(Sung Il Jung),김철홍(Chul Hong Kim),최호선(Ho Sun Choi),변지수(Jee Soo Byun) 대한산부인과학회 2000 Obstetrics & Gynecology Science Vol.43 No.8
Objective : To analyze the 5-year survival rate and prognostic factors for stage Ib and IIa cervical cancer treated by radical hysterectomy. Methods : A total of 366 patients with invasive cervical cancer treated by radical hysterectomy from June 1985 to June 1994 were retrospectively analyzed at Chonnam National University Hospital, Kwangju, Korea. Survival analysis was performed using the Kaplan-Meier estimator. Multivariate analysis was performed using the Cox proportional hazards regression model. Results : The overall 5-year survival rate was 92% in stage Ib and 87% in stage IIa. Factors assessed for prognostic value included age, FIGO stage, cell type, tumor size, depth of invasion, lymphovascular space invasion (LVSI), and pelvic lymph node metastases (LNM). In the multivariate analysis, age, cell type, and lymph node metastases were independent predictors of survival. Lower survival was associated with older than 50 years, adenocarcinoma, and presence of lymph node metastases. The higher survival rates in patients with single lymph node involvement or lymph node metastases below the level of the common iliac nodes (85 and 84.6%, respectively) versus multiple or extrapelvic lymph node metastases (50 and 20%, respectively) were statistically significant (p < 0.01). Conclusion : Patients who had lymph node metastases, adenocarcinoma, and were older than 50 years had a poorer survival rate. Such patients require more intense postoperative treatment and closer surveillance. Low-risk patients with a single lymph node metastasis below the level of the common iliac nodes may benefit from thorough lymphadenectomy without adjuvant therapy to prevent unpleasant complications.
전산해석을 이용한 Telescopic Bridge의 구조안정성 평가 및 설계 보강
김한울(Han-Ul Kim),배징도(Jing-Do Bae),이재훈(Jae-Hoon Lee),최주형(Joo-Hyung Choi),최영삼(Young-Sam Choi),조용원(Yong-Won Cho) 대한기계학회 2022 대한기계학회 춘추학술대회 Vol.2022 No.11
In this research, design reinforcement and structural stability evaluation of a telescopic bridge are introduced which is used for transferring people and supplies safely between OSV and offshore plants. Analysis cases were selected considering classification rules(DNV-GL) and computational analyses were performed. According to the analysis result, researched proper design reinforcement by checking weak parts and tried to reinforce design effectively.