외과의사의 기술적 요인과 선천성 식도폐쇄증 수술후 문합부 협착

전용순,김우기 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.5

Background : Esophageal stricture is a common complication of anastomosis of the esophagus in esophageal atresia(EA). The factors that have been implicated in the pathogenesis in the esophageal stricture include the poor anastomotic technique(excessive tension, two-layered anastomosis, silk suture material), ischemia at the end of the esophagus, anastomotic leak, and gastroesophageal reflux. Method : To evaluate the importance of the surgeon's technique affecting anastomotic stricture after primary repair in EA, we reviewed 69 patients with EA operated at Department of Pediatric Surgery, Seoul National University Hospital from April 1978 to June 1995 and analyzed statistically the effects of such variables as sex, age at admission, age at corrective surgery, birth weight, combined anomaly, duration from admission to operation, anastomotic leakage, postoperative complication except leakage and gastroesophageal reflux, on stricture. Results : Anastomotic stricture was developed in 36(52.2%) of 69 patients who underwent primary repair of EA. There was no statistically significant factor affecting anastomotic stricture. Conclusion : The importance of cautious surgical technique should be emphasized to prevent anastomotic stricture.

영아기 이후에 진단된 중장염전증

전용순 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.5

Midgut volvulus secondary to intestinal malrotation usually presents within the first month of life, typically with persistent bilous vomiting. Diagnostic delay may result in midgut infarction and death. 4-year-old boy was admitted presenting bilous vomiting and abdominal pain. The patient has had periodic bilous vomiting, irritability, abdominal pain but he just has received conservative treatment such as fasting and hydration. He was malnourished state. Bowel sound was decreased and there was right upper quadrant tenderness without abdominal distension. On abdominal radiograph, there was no gas shadow beyond jejunum and stomach was distended. Ultrasound showed distended stomach, duodenum and proximal jejunum. "Whirlpool sign" on color Doppler ultrasound was observed. During operation, intestinal malrotation and counter clockwise midgut volvulus were observed and there was no intestinal necrosis. Derotation of volvulus, Ladd's procedure and appendectomy were performed. Postoperatively, bilous vomiting and abdominal pain disappeared and persistent weight gain is being observed.

時變 確率 시스템을 위한 適應 濾波에 관한 硏究

전순용 동양대학교 산업기술연구소 2000 東洋大學校 産業技術硏究所 論文集 Vol.2 No.1

하이브리드 電氣 自動車의 動力傳達 메커니즘 改善에 관한 硏究

전순용,최창원 동양대학교 산업기술연구소 2000 東洋大學校 産業技術硏究所 論文集 Vol.2 No.1

Growing environmental and economic concerns have lead to recent efforts to produce more fuel efficient and lower emissions vehicles. Hybrid Electric Vehicles(ab. HEVs) are the most promising designs to reach these goals. In this paper, We present an of a Power Train of the Hybrid Electric Vehicle(ab. PTHEV). We introduce a different concept of PTHEV than in the present research of PTHEV. This PTHEV includes two benefits of serial(Minimum emission and Maximum efficiency) and parallel(Maximum Power Train efficiency by direct drive engine) PTHEV. Also, this mechanism can avoid driving the engine in the low speed regions.

산업용 연축전지의 충전제어 알고리즘 설계

전순용 東洋大學校 産業技術硏究所 1999 東洋大學校 産業技術硏究所 論文集 Vol.1 No.1

The lead-acid batteries are widely used for movable power source. But, it is difficult to analyze their charging characteristics influenced by various parameters. Because these parameters have non-linear and time-variant characteristics. In this study, the charging characteristics of high capacity lead-acid battery 630AH is investigated through experiments with respect to variations of temperature and life cycle in the charging process. Also, the database of battery's characteristics are established, and the new charging algorithm is suggested using the database. This new charging concept will be useful to development advanced battery charger adapted to battery's condition changes.

간아세포종에 대한 임상적 고찰

전용순,이순용 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.4

Objectives: Recently preoperative chemotherapy has been used to reduce the primary tumor and to convert an unresectable tumor to resectable one. The aim of this study was to report our experience in the management of hepatoblastoma. Materials and Methods: Clinical records of 3 patients with hepatoblastoma treated from February, 1999 to August, 2002 at Inje University Pusan Paik Hospital were evaluated. Patients' charts were reviewed retrospectively and data collected regarding age, sex, presenting symptoms and signs. Clinical status was evaluated by specific laboratory results, radiologic findings, surgical findings and histological findings. There were two males and one female. Ages at diagnosis were 3 years in two patients and 3 months in one. Symptoms were all abdominal masses. All patients showed anemia. No patient showed thrombocytosis or thrombocytopenia AFP levels were all increased. Two patients were treated with neoadjuvant chemotherapy. After neoadjuvant chemotherapy, unresectable tumor was converted to resectable one in one patient and metastatic pulmonary nodule disappeared in one patient. Right trisegmentectomy. Segment 5,6 segmentectomy and right lobectomy were done, respectively. All patients received postoperative chemotherapy. Follow-up periods are 4 years in two patients, 6 months in one. No patient shows recurrence. Conclusion: Unresectable hepatoblastoma can be converted to resectable one and pulmonary metastasis can be treated by neoadjuvant chemotherapy.

저위 쇄항의 임상적 특징 및 수술 결과 고찰

전용순 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.4

Objectives: The majority of patients with imperforate anus are reported to have a malformation of the low variety. Despite this, much of the discussion in the literature is devoted to the repair and results of the more complex, high lesions. The purpose of this study was to review the clinical characteristics and the operative results in patients with low imperforate anus. Methods and Meterials: A retrospective review was conducted of the medical records of patients treated for imperforate anus of the low type at Inje University Pusan Paik Hospital from March, 1997 to June 1999. 11 patients were included. A follow-up telephone survey of patients' parents was conducted. Results: Twenty patients were identified who were surgically treated for imperforate anus at Inje University Pusan Paik Hospital from March 1997 to June 1999. 11 patients (55%) were diagnosed with low type. 8 patients were boys and 3 were girls. The ages at time of operation for imperforate anus ranged from less than 24 hours to 5 months. All patiens were diagnosed with anoperineal fistula. 2 patients (18%) were born with at least one associated congenital anomaly. Cardiac, genitourinary and musculoskeletal anomalies were diagnosed. One patient exibited renal hypoplasia and polydactyly, and was diagnosed as VACTERL association. Cut-back anoplasty was performed in all patients. There was no postoperative complication. Now patients' ages range from 3 years 6 months to 5 years 3 months. One patient had constipation transiently, but now no patient has constipatient and all show normal bowel function. According to the degrees of parents' satisfaction about the shape and the position of anus, no parent is worried about the shape and the position of anus. All parents consider the bowel function more importantly than the cosmetic aspect of anus. Conclusion: Low imperforate anus can be successfully treated using a cut-back anoplasty and the need according to normal bowel function and good cosmetic result can be satisfied.

부하변화에 적응하는 충전제어기 설계

전순용 동양대학교 산업기술연구소 2001 東洋大學校 産業技術硏究所 論文集 Vol.3 No.1

제대탈장과 동반된 방관 제외번

전용순 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.5

Abnormalities related to urachal remnants are uncommon and rarely become pathological or symptomatic. However, such a condition is still fatal when infected, and the development of late malignant changes cannot be ruled out. Most urachal anomalies are classified into five major groups: (1) a completely patent urachus, (2) urachal sinus, (3) urachal diverticulum, (4) urachal cyst, (5) alternating cyst. Umbilical evagination of the bladder(UEB) is a rare urachal anomaly. A neonate with UEB and umbilical cord hernia is reported. A full-term male with normal antenatal history and birth weight of 3.0 kg born to a mother by vaginal delivery was noted to have umbilical cord hernia and UEB at the lower edge of the umbilical cord hernia. The infraumbilical abdominal wall and external genitalia were normal, with fully descended testes. An ultrasound scan of the kidneys was normal. With the patient under general anesthesia, the sac of umbilical cord hernia was excised. A urinary catheter was inserted through the urethral orifice and appeared from the evaginated superior dome of the bladder. The interior of the bladder was normal. Excision of the evaginated part of the bladder and primary repair were done. The bladder was pushed back into the abdominal cavity. Primary closure of the umbilical cord hernia was done.

선천성 처녀막 폐쇄, double vagina와 동반된 hydrometrocolpos

전용순 인제대학교 백병원 2002 仁濟醫學 Vol.23 No.5

Hydrometrocolpos is a pathological distension of uterus and vagina with an excessive amount of fluid in the presence of distal vaginal outflow obstruction. The incidence of hydrometrocolpos is 1 in 30,000 live births. 6-day-old girl was admitted due to feeding difficulty and abdominal distension. Abdominal ultrasound revealed left hydronephrosis, right renal hypoplasia and a huge intraabdominal cyst. On abdominal CT scan, downward extension of this cyst to the lower vagina represents hydrometrocolpos. On physical examination, imperforate hymen was observed. During operation, 70mL dark brown-colored fluid was evacuated by the needle aspiration. Parnial hymenectomy and hymenoplasty were performed. The double vagina was observed and the right vagina ended blindly 1cm above the vaginal orifice. Postoperatively, abdominal distension and feeding difficulty disappeared. Hydrometrocolpos was not observed anymore and left hydronephrosis was improved on postoperative abdominal ultrasound.