1.A Study on the Systolic Time Intervals in Normal Children.
Yong Soo YOON ; Chang Yee HONG
Korean Circulation Journal 1982;12(1):77-88
The systolic time intervals were measured on 388 normal chidren, ranging from 8 months to 15years of age by using simultaneous recordings of the electrocardiogram, phonocardiogram and carotid or axillary arterial pulse. The statistical methods were applied to study the influence of age, sex and heart rate(HR) on these intervals. The results were as follows. 1. The regression equation of QS2was -1. 60HR+480+/-16 msec in males and -1.68HR+492+/-15 msec in females, respectively. 2. The regression equation of LVET was -1. 13 HR+359+/-10 msec in males and -1.21 HR+369+/-13 msec in females, respectively. 3. The regression equation of PEP was -0.58 HR+133+/-9 msec in males and -0.58 HR+128+/-9 msec in females, respectively. 4. The PEP/IVET ratio was 0.29+/-0.04 in males and 0.30+/-0.06 in females. 5. There was no sex difference in various systolic time intervals, and age had a slight influence but it was negligible for clinical use. 6. According to the regression equations of QS2, LVET, and PEP to the heart rate, QS2, and LVET were found to be more inversely correlated with heart rate than PEP.
Child*
;
Electrocardiography
;
Female
;
Heart
;
Heart Rate
;
Humans
;
Male
;
Sex Characteristics
;
Systole*
2.Paroxysmal Supraventricular Tachycardia in Infants and Children: Clinical Study of 36 Cases.
Yong Seung HWANG ; Yong Soo YOON ; Chang Yee HONG
Korean Circulation Journal 1982;12(2):83-90
Thirty-six cases of paroxysmal supraventricular tachycardia which were observed at the Department of Pediatrics, Seoul National University Hospital from 1976 till October 1982, were analyzed. 1. The sex ratio was 1.8:1, male predominance. Sixteen cases (44.4%) were under 1 year of age and 11 cases (30.6%) were under 4 months of age. 2. Cases without known heart disease were 22(61.6%). Among Known etiology, most frequent one was 7 cases(19.4%) of W-P-W syndrome. 3. The sex ratio of group without known heart disease was 2.1:1, and that of group with known heart disease was 1.3:1. Under 4 months of age, there were more cases without known heart disease(72.7%) and after 4 months of age number of cases with and without known heart disease were similar. 4. Most frequent clinical manifestation was tachydyspnea. hepatomegly, irritability, palipitation, cyanosis and pallor, vomiting, chest pain, edema, abdominal pain, and fever were followed in order of frequency. 5. Congestive heart failure occurred in 22 cases(61%). The incidence was related to the duration of attack of tachycardia, age of patients, and heart rate. The longer the duration of attack and the younger the age of patients and the faster the heart rate, the higher incidence of heart failure was observed. 6. As treatment, vagal reflex stimulation was almost ineffective, and digitalization was effective in most of the cases. Verapamil and electrical cardioversion were tried in small number of cases and proved to be effective. 7. One case (2.8%) expired becase of the supraventricular tachycardia. 8. Eight cases (30.8%) had recurrence. In younger age group, recurrence rate was lower. 9. Digoxin was given in 15 cases for prevention of recurrence and was effective in 12 cases.
Abdominal Pain
;
Chest Pain
;
Child*
;
Cyanosis
;
Digoxin
;
Edema
;
Electric Countershock
;
Fever
;
Heart
;
Heart Diseases
;
Heart Failure
;
Heart Rate
;
Humans
;
Incidence
;
Infant*
;
Male
;
Pallor
;
Pediatrics
;
Recurrence
;
Reflex
;
Seoul
;
Sex Ratio
;
Tachycardia
;
Tachycardia, Supraventricular*
;
Verapamil
;
Vomiting
3.The Effect of the Ranitidine (Zantac)(R) in the Treatment of Peptic Ulcer.
Yong Bum YOON ; Sae Kyung CHANG ; Chung Yong KIM
Korean Journal of Gastrointestinal Endoscopy 1983;3(1):35-39
The therapeutie efficacy of ranitidine was evaluated itn 48 in- and out- patients with endoscopically diagnosed 18 cases of gaetric ulcer and 30 casea of ducnienal ulcer. In the open study, every pabenta was treated with ranitidine 150 mg b.i.d. for 4 weeks, and waa followed up by gastroscopy after 4 weeks of the treatment. The reeults obtained were summarized as follows; 1) 15 out of 18 cases (83. 3%) of gastric ulcers and 26 out of 30 cases (86. 7%) of duodenal ulcers had been completely healed up in 4 weeks. 2) There was a significant relationship between healing of ulcer and the relief of symptoms (x =6.12, P<0.005).3) There were no significant untoward reactions, efther subjective or objective, to the administration of the drug, except one case of severe epigastic discomfort. In conclusion ranitidine appears to be fairy effective and safe for the treatment of patient with peptic ulcr diseases.
Duodenal Ulcer
;
Gastroscopy
;
Humans
;
Peptic Ulcer*
;
Ranitidine*
;
Stomach Ulcer
;
Ulcer
4.Interrelationship among sperm motility, sperm morphology and hypoosmotic swelling test in male infertility evaluation and their usefulness in predicting male fertility potential.
Doo Seok CHOI ; Shin Yong MOON ; Yoon Seok CHANG
Korean Journal of Obstetrics and Gynecology 1993;36(7):2497-2509
No abstract available.
Fertility*
;
Humans
;
Infertility, Male*
;
Male
;
Male*
;
Sperm Motility*
;
Spermatozoa*
5.The toxic effects of cryoprotectants on the mouse embryo.
Chung Hoon KIM ; Shin Yong MOON ; Yoon Seok CHANG
Korean Journal of Obstetrics and Gynecology 1991;34(10):1400-1409
No abstract available.
Animals
;
Embryonic Structures*
;
Mice*
6.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*
7.Reappraisal of Delorme's procedure for rectal prolapse.
Sung Yong YOON ; Joong Kil CHANG ; Seong Dai PARK
Journal of the Korean Surgical Society 1993;44(6):875-880
No abstract available.
Rectal Prolapse*
8.Endocrine Disrupters and Reproduction.
Chang Joo LEE ; Ho Joon LEE ; Yong Dal YOON
Journal of Korean Society of Endocrinology 2001;16(6):596-623
No abstract available.
Reproduction*
9.Vasodilator Therapy in Children with Congestive Heart Failure.
Yong Soo YOON ; Chang Yee HONG ; Kyung J CHUNG
Korean Circulation Journal 1983;13(1):185-193
Patients with severe congestive heart failure due to rheumatic heart disease generally have both reduced cardiac output and increased pulmonary and systemic venous pressures. A study was therefore made of the use of vasodilator therapy with orally administered hydralazine, which acts on arteriolar resistance vessels and thus reduces afterload. 55 children aged from 4 years old to 15 year old were divided into two groups. Group I received oral hydralazine(4mg/kg/kay in 4 divided doses) in addition to digoxin therapy for mean duration of 10.5 months. Group II received oral digoxin only. The hemodynamic results using M-mode echocardiography, chest X-ray, and EKG between two groups were analyzed. 1) 4(78%) of 55 patients had only mitral valve involvement and another 12 patients had double valve involvement and all the patients belonged to functional class III or IV fo New York heart Association. 2) Left venticular end-diastolic dimensions and the height of R in V6 on EKG were not changed significantly in both groups. 3) Shortening fraction, LPEP/LVET, and RPEP/RVET were markedly improved in both groups, but the degree of improvement in group I was more significant than in group II. 4) 21(80%) of 26 patients in group I showed significant improvement in functional class(t=1.92, 0.05
Adolescent ; Cardiac Output ; Child* ; Child, Preschool ; Digoxin ; Echocardiography ; Electrocardiography ; Estrogens, Conjugated (USP)* ; Heart ; Heart Failure* ; Hemodynamics ; Humans ; Hydralazine ; Mitral Valve ; Rheumatic Heart Disease ; Thorax ; Venous Pressure
10.Detection and clinical significances of the occurrence of endogenous LH surge with enzyme immunoassay and fluoroimmunoassay.
Jong Kwan JUN ; Shin Yong MOON ; Yoon Seok CHANG
Korean Journal of Obstetrics and Gynecology 1991;34(7):961-971
No abstract available.
Fluoroimmunoassay*
;
Immunoenzyme Techniques*