1.The effective of ultrashort-term gonadotropin-releasing hormone agonist administration in controlled ovarian hyperstimulation for in vitro fertilization.
Chi Seok AHN ; Shin Yong MOON ; Yoon Seok CHANG
Korean Journal of Obstetrics and Gynecology 1993;36(7):2633-2644
No abstract available.
Fertilization in Vitro*
;
Gonadotropin-Releasing Hormone*
2.Postictal Serum Prolactin Values and Its Significance in Convulsive Disorder.
Wan Yong SHIN ; Sa Jun CHUNG ; Chang Il AHN
Journal of the Korean Pediatric Society 1994;37(11):1573-1578
The authors analysed 196 cases of convulsive disorder in children who were admitted to the pediatric department of Kyunghee Hospital from June 1993. Blood samples were drawn immediately following seizures on arrival. Serum prolactin values were measured by radioimmunoassay. The results obtained were as follows: 1) Mean serum prolactin value was 55.4+/-20.8ng/ml in generalized seizures within 1 hr following seizures, 22.5+/-3.9ng/ml in partial seizures. There was a significant difference between generalized scizures and partial scizures (p<0.05). 2) Mean serum prolactin value was 23.5+/-9.7ng/ml in generalized seizures within 1~3 hrs following seizures, 10.4+/-4.9ng/ml in partial seizures. There was a significant difference between generalized seizures and partial seizures (p<0.05). 3) Mean serum prolactin value was 9.5+/-4.4ng/ml in generalized seizures 3 hrs following seizures, 9.8+/-4.8ng/ml in partial seizures. There was no significant difference between generalized seizures and partial seizures (p>0.05). We found transient hyperprolactinemia following generalized seizures but a little change following gartial seizures. Postictal elevation of serum prolactin may represent a biochemical marker of generalized and partial seizures.
Biomarkers
;
Child
;
Humans
;
Hyperprolactinemia
;
Prolactin*
;
Radioimmunoassay
;
Seizures
3.Photoelastic analysis of the Stress distribution on an intervertebral disc.
Hyun Kug SHIN ; Jae Chang LEE ; Myun Whan AHN ; Jong Chul AHN ; Joo Chul IHN
Yeungnam University Journal of Medicine 1989;6(2):223-239
To observe the change in the status of stresses according to three different postural angulation of an intervertebral disc with or without nucleus pulposus, 6 specimens of a 3-dimensional photoelastic model of the spine were made of epoxy. The nucleus pulposus portion was replaced with silicon in three models, and the three were made without silicon. Through axial application of a vertical compressive load of 8 kg, the peculiar patterns of the isochromatic fringes were observed. Stresses on the intervertebral disc were analyzed according to three different postural angulations of the intervertebral disc with the nucleus pulposus and without the nucleus pulposus. The results of these study are as follow: 1. In an erect neutral posture with the nucleus pulposus, the stress concentration was much increased at the posterior portion rather than at the anterior portion. Also, the high stress was concentrated at the medial and central portion. In an erect neutral posture without the nucleus pulposus, the stress concentration was much increased at the anterior portion rather than at the posterior portion and the stress distribution seemed to be locally concentrated. 2. In a maximal flexed posture, the stress concentration was much increased at the posterior portion rather than at the anterior portion. Comparing the presence of the nucleus pulposus with the absence of the nucleus pulposus, the stress concentration was lower at the anterior portion in the presence of the nucleus pulposus than in the absence of the nucleus pulposus. However, the stress distribution at the posterior portion was nearly same in the two groups. According to the analysis of the stress distribution diagram, as a whole, the stress pattern around the disc was evenly distributed. 3. In a maximal extended posture, the higher concentration of the stress distribution at the anterior and medial portion rather than in the posterior and lateral portion was observed. The stress concentration was higher in the presence of the nucleus pulposus than in the absence of the nucleus pulposus. 4. Comparing the maximal flexed posture with the erect neutral posture, the stress concentration in the flexed posture was much decreased in the posterior portion rather than in the erect neutral posture, and an even distribution of the stress pattern in the flexed posture was observed. 5. In the presence of the nucleus pulposus, at the anterior and posterior portion, the stress concentration in the flexed posture was much decreased compared with the extended posture. In the absence of the nucleus pulposus, at the anterior and posterior portion, the stress concentration in the extended posture was much decreased compared with the flexed posture.
Intervertebral Disc*
;
Posture
;
Silicon
;
Spine
4.Shortening of the Femoral Neck During Healing Period of the Femoral Neck Fracture
Sung Kee CHANG ; Chang Ju LEE ; Seung Rim PARK ; Jeong Hwan OH ; Dong Shin AHN
The Journal of the Korean Orthopaedic Association 1987;22(3):680-686
Since osseous healing in the fracture of the femoral neck is carried out by endosteal bone formation, the size of contact area of the fracture fragments and impaction are of prime importance. It is not uncommon to be faced with the problem of back out of the internal fixation devices during healing period. It seems unnecessary to emphasize the benefit of sliding to close the gap between the fracture fragments. We report a retrospective study of 25 cases of the femoral neck fractures treated by closed reduction and fixation with multiple Knowles pins, paying particular attention to the amount and duration of sliding back out of the fixation devices and relating these to the final results of fracture union. Our clinical study led us to the following conclusions; 1. The shortoning of the femoral neck over 3mm occurred in 16 cases(64%) out of 25 cases. The average amount of back out of Knowles pin is 6mm. 2. Most of the shortening occurred during the first 8 weeks after surgery and extrusion of the nail is frequent findings in unstable fractures and osteoporoses. 3. Backing out over 12 weeks after surgery was associated frequently with delayed union and non-union. 4. Collapse or shortening is nceessary to promote a bone to bone contact and bone healing.
Clinical Study
;
Femoral Neck Fractures
;
Femur Neck
;
Internal Fixators
;
Osteogenesis
;
Osteoporosis
;
Retrospective Studies
5.Study of Calcifying Epithelioma in 9 Cases.
Soo Chang PARK ; Shil SHIN ; Geung Hwan AHN ; Jae Hong KIM
Korean Journal of Dermatology 1971;9(2):23-30
The diagnosis of calcifying epithelioma is more easily made on the basis of the histopathological findings than the clinical manifestations. Calcifying epidermal cyst is only one that must be differentiated from calcifying epitheIioma because of its similarity in histopathological findings. 9 cases of calcifying epithelioma which have been collected at Seoul National University Hospital for the past ten years, frorn October 1960 to September 1970, are reported. Summary of the clinical and histopathological findings are as follows; 1) Range of age: one to sixty years old. 2) Ratio of sex: nearly equal in both sexes (5 male, 4 female.) 3) The final diagnosis of all of the cases was made not on the clinical basis but on the histopathological findings. 4) Only one case out of nine showed multiple skin lesions.
Carcinoma*
;
Diagnosis
;
Epidermal Cyst
;
Humans
;
Male
;
Seoul
;
Skin
6.Acute Tubular Necrosis Associated with Typhoid Fever.
Pill Jin SHIN ; Ho Suk LEE ; Byoung Soo CHO ; Chang Il AHN ; Mun Ho YANG
Journal of the Korean Pediatric Society 1994;37(2):250-256
Acute tubular necrosis has been rarely reported as a complication of typhoid fever in the literature. We experienced four cases of acute tubular necrosis associated with typhoid fever in children. Patients showed significant titer of widal reaction associated with acute renal failure and one of them rised in 2 months after onset of clinical symptoms. Renal biopsy findings were compatible with acute tubular necrosis and immune complexes were not deposited in the glomeruli. Clinical and urinary findings were normalized by hemodialysis and antibiotic therapies. In conclusion, close longterm follow up of widal titer is mandatory in acute tubular necrosis, especially when associated with high fever.
Acute Kidney Injury
;
Antigen-Antibody Complex
;
Biopsy
;
Child
;
Fever
;
Follow-Up Studies
;
Humans
;
Necrosis*
;
Renal Dialysis
;
Typhoid Fever*
7.A case of Crohn disease.
Ahn Hong CHOI ; Hyung Sim CHANG ; Young Ho LEE ; Woo Taek KIM ; Woo Won SHIN
Journal of the Korean Pediatric Society 1991;34(7):1009-1014
No abstract available.
Crohn Disease*
9.Postoperative Changes of Arterial Blood Gas Tension and Ventilatory Function .
Jin Kyung SHIN ; Hae Kyung KIM ; Chang Kun AHN
Korean Journal of Anesthesiology 1987;20(5):707-711
Pulmonary comp1ications following surgery continue to be a major cruse of postoperative mobidity. The purpose of this study was to measure the effects of various surgical procedures upon arterial blood gas tension and ventilatory function in the early postoperative period. 30 patients with no history of cardiopulmonary disease before surgery were selectively chosen and divided into 4 categories depending on the location of the operative incision and the type of anesthesia. Group l was composed of upper abdominal incision cases, Group ll lower abdominal incision cases, and Groups lll and lV had nonabdominal surgery. Groups, l, ll and lll received general anesthesia, while lV was liven spinal anesthesia. Lung volumes were measured and blood samples were taken preoperatively and 70 minutes after surgery. Patients were maintained in semisitting position before and after surgery. Vital capacities were significantly reduced in the postoperative period in the general ane- sthesia groups, and tidal volumes were significantly reduced in the upper and lower abdominal incision groups. The mean PaO2 value after anesthesia decreased significantly in the upper and lower abdominal incision groups, but there were no significant differencea in the PaCO2 value. It seems that supplemental oxygen and encouragement of deep inspirations are essential and beneficial in the early postoperative period, especially for the patients with abdominal surgery.
Anesthesia
;
Anesthesia, General
;
Anesthesia, Spinal
;
Humans
;
Lung
;
Oxygen
;
Postoperative Period
;
Tidal Volume
;
Vital Capacity
10.A Case Report Kostmann Syndrome.
Han Wook YOO ; Son Moon SHIN ; Hyo Seop AHN ; Yong CHOI ; Chang Yee HONG
Journal of the Korean Pediatric Society 1983;26(3):284-288
No abstract available.