1.Clinical review of surgical procedures in patients over 65 years of age.
hyun hun SHIN ; Dae Hwa CHOI ; Chang Woo LEE
Journal of the Korean Surgical Society 1993;44(6):839-846
No abstract available.
Humans
2.The effect of serum from patients with endometriosis on mouse embryo development in vitro.
Jae Ho CHOI ; Gill Woo LEE ; Sang Hun CHA ; Tae Ho CHO
Korean Journal of Obstetrics and Gynecology 1993;36(7):1554-1560
No abstract available.
Animals
;
Embryonic Development*
;
Embryonic Structures*
;
Endometriosis*
;
Female
;
Humans
;
Mice*
;
Pregnancy
3.A Case of Esophageal Obstruction Complicated in a Patient with Chronic Granulomatous Disease: Esophageal obstruction in Chronic Granulomatous Disease.
Ji Soo KIM ; Jinsol HWANG ; Young Hun CHOI ; Woo Sun KIM ; Joong Gon KIM
Korean Journal of Pediatric Infectious Diseases 2014;21(1):53-58
Chronic granulomatous disease (CGD) is an inherited immunodeficient disease characterized by recurrent infections and granuloma formation. Granulomatous obstruction of esophagus is one of the rare complications of CGD. The use of steroids and antimicrobials for esophageal obstruction by granuloma in CGD patients has been controversial due to the possibility of concomitant inapparent infection. We report a case of esophageal obstruction in an 8-year-old CGD patient showing the poor response to antibiotics therapy. However, dramatic improvement of symptoms and radiologic findings of esophageal obstruction were achieved after steroid therapy. One month after discontinuation of steroid, esophageal obstruction recurred and the patient was re-treated with steroid. After that time, he experienced one more recurrence of esophageal obstruction. This symptom subsided after antibiotics therapy without steroid and he has been followed up to the present without further relapse.
Anti-Bacterial Agents
;
Child
;
Esophageal Stenosis
;
Esophagus
;
Granuloma
;
Granulomatous Disease, Chronic*
;
Humans
;
Recurrence
;
Steroids
4.Nasal reconstruction with various flaps: case report.
Jong Woo CHOI ; Sang Hun CHUNG ; Chong Kun LEE ; Sang Tae AHN ; Poong LIM
Journal of the Korean Society of Plastic and Reconstructive Surgeons 1991;18(2):265-273
No abstract available.
5.Dual Plate Fixation for Displaced Transverse Fracture of the Lower Sacrum
Dong-Hyuk CHOI ; Ji-Hun PARK ; Seong-Woo SHIM ; Yong-Soo CHOI
The Journal of the Korean Orthopaedic Association 2020;55(2):178-182
Isolated fractures of lower sacrum are commonly treated conservatively in most cases because of low energy damage and stable fracture. However, surgical treatment is required in displaced unstable fracture. But the surgical technique is not established and even case reports are not common. We reported a case of displaced transverse fracture of the lower sacrum that was treated with an open reduction and dual plate fixation.
6.Learning Curve of the Direct Anterior Approach for Hip Arthroplasty
Dong Hun HAM ; Woo Chull CHUNG ; Byeong Yeol CHOI ; Jong Eun CHOI
The Journal of the Korean Orthopaedic Association 2020;55(2):143-153
Purpose:
To evaluate the timing of the improvement in surgical skills of the direct anterior approach for hip arthroplasty through an analysis of the clinical features and learning curve in 58 cases.
Materials and Methods:
From November 2016 to November 2018, 58 patients, who were divided into an early half and late half, and underwent hip arthroplasty by the direct anterior approach, were enrolled in this retrospective study. The operation time and complications (fracture, lateral femoral cutaneous nerve injury, heterotopic ossification, infection, and dislocation) were assessed using a chi-square test, paired t-test, and cumulative sum (CUSUM) test.
Results:
The mean operation times in total hip arthroplasty (26 cases) and bipolar hemi-arthroplasty were 132.1 minutes and 79.7 minutes, respectively, demonstrating a significant difference between the two groups. CUSUM analysis based on the results revealed breakthrough points of the operation time, decreasing to less than the mean operation time because of the 16th case in total hip arthroplasty and 14th case in bipolar hemiarthroplasty. Complications were encountered in the early phase and late phase: five cases of fractures in the early phase, no case in the late phase; eight and two cases of lateral femoral cutaneous nerve injury, respectively; three and two cases of heterotopic ossification, respectively; and one case of dislocation, one case of infection and three cases of others in the early phase. The CUSUM chart for the fracture rate during operation in the early phase revealed the following: five cases fracture (17.2%) in the early phase and no case in the late phase (0%). This highlights the learning curve and the need for monitoring the inadequacy of operation based on the complications.
Conclusion
Hip arthroplasty performed by the direct anterior approach based on an anatomical understanding makes it difficult to observe the surgical field and requires a learning curve of at least 30 cases.
7.Variability and application of VEP components in Transient VEP and Steady VEP.
Byoung Woo SOHN ; Chung Woo KIM ; Tae Hun CHOI ; Kyu Ryong CHOI
Journal of the Korean Ophthalmological Society 1991;32(12):1123-1129
Before VEP use in clinics, we studied in statistical significance between borh eyes, intrasubject varciabilty intersubject variability (between incdividul) and changes of VEP cmponents between ignorance and attention in losujects (20eyes). There was no statistically significant difference between both eyes in each component of VEP and the variability of intersubjects was larger than that of intrasubjects. The smallest variability of intersubject was N1, P1 latency and that of intrasubject was PI latency in each component of VEP. When subjects were ignored, N1-P1, P1-N2 and steady VEP amplitude decreased significantly but N1, P1 and N2 latency were no significant difference.
8.DNA Ploidy and S-Phase Fraction in Proliferative Hepatic Lesions of Rat Liver Induced by Dietylnitrosamine and Partial Hepatectomy.
Chan CHOI ; Sung Hee CHO ; Hyung Bae MOON ; Ki Jung YUN ; Hun Taeg CHUNG ; Sang Woo JUHNG
Korean Journal of Pathology 1991;25(4):346-356
We have investigated the changes of DNA ploidy and S-phase fraction in proliferative lesions of rat liver. Proliferative lesions were induced by diethylnitrosamine and partial hepatectomy. DNA ploidy was measured by flow cytometer, and S-phase fraction was measured by in situ bromodeoxyuridine(BRdU)-anti BRdU monoclonal antibody techniques. Normal liver and initiated lesion revealed DNA diploidy or DNA tetraploidy. Hepatocyte nodule (NODULE) and hepatocelular carcinoma (HCC) revealed DNA diploidy, tetraploidy or aneuploidy. S-phase fraction was 1.0+/-0.9, 1.0+/-0.9m 3.7+/-2.3, 5.5+/-4.9, and 13.8+/-11.6 in normal liver, initiated lesion, NODULE not associated with HCC, NODULE associated with HCC, and HCC, respectively. In NODULE associated with HCC, it was widely distributed, ranging from 0.8 to 15.5%. In conclusion, S-phase fraction appeared to be increased as the hepatocarcinogenesis proceeded, but DNA ploidy did not. There was a heterogeneity of DNA ploidy and S-phase fraction in the proliferative hepatic lesions.
Rats
;
Animals
;
Carcinoma, Hepatocellular
9.Clinical Electrophysiological Study on Sick Sinus Syndrome.
Dong Sun HAN ; O Hun KWON ; Eun Suk JUN ; Yong Jung KIM ; Yun Shik CHOI ; Yong Woo LEE
Korean Circulation Journal 1985;15(1):1-12
Nine patients of mean age 47.8 years, with suspected sinus node dysfunction, underwent extensive electrophysiological studies. Sinus bradycardia(6the electrophysiological study, AH and HV intervals were prolonged in 2/9 and 1/9 patients, respectively. Maximal sinus node recovery times were prolonged in 7/9 patients, ranging from 1,330 msec to 12,330msec. Sinoatrial conduction times measured by atrial premature stimulation technique were prolonged in 5/7 patients, ranging from 137msec to 310 msec. And sinoatrial conduction time measured by continuous pacing technique also revealed prolonged value in 4/6 patients ranging from 140 msec to 195 msec. The effective refractory periods, of atrium were prolonged in 6/8 patients (320 msec to 470 msec). The effective and functional refractory periods of AV node were prolonged in 3/8 patients (440 csec to 490 msec) and 4/8 patients (530 msec to 560 msec), respectively. Retrograde VA conduction could be observed in 3/7 patients and ventricular effective refractory periods were normal in 7/7 patients. Atrial flutter was induced in 1/9 patients by electric stimulation during electrophysiological study. Above data suggest that the electrophysiological study is very useful in assessing the sinus node function and other electrophysiological properties in sick sinus syndrome patients and also suggest that the data could be utilized in choosing the proper mode of artificial pacemaker for each patient.
Atrial Flutter
;
Atrioventricular Node
;
Electric Stimulation
;
Humans
;
Pacemaker, Artificial
;
Sick Sinus Syndrome*
;
Sinoatrial Node
10.A Case of Rhino-orbito-Cerebral Mucormycosis Presenting with Recurrent Transient Ischemic Attacks(TIAs).
Woo Youl KANG ; Ju Hun LEE ; Young Hee SUNG ; Il Soo CHOI ; Hong Ki SONG ; Byung Chul LEE
Journal of the Korean Geriatrics Society 2002;6(3):239-242
Rhino-orbito-cerebral muconnycosis is an uncommon fatal fringal infection, almost exclusively seen in diabetic or other itnmunocompromised patients. Recurrent transient ischemic attacks(TIAs) as initial presenting sign of rhino-orbito-cerebral mycormycosis has not been reported to our knowledge. We report a patient with muconnycosis unusually presenting with recurrent TIAs, followed by central retinal artery occlusion, multiple cranial nerve palsies, and then cerebral infarction in the territory of middle cerebral artery.
Cerebral Infarction
;
Cranial Nerve Diseases
;
Humans
;
Middle Cerebral Artery
;
Mucormycosis*
;
Retinal Artery Occlusion