1.Left Ventricular Function in Chronic Severe Anemia by Echocardiographic Study.
Journal of the Korean Pediatric Society 1985;28(9):880-887
No abstract available.
Anemia*
;
Echocardiography*
;
Ventricular Function, Left*
2.Percutaneous Transluminal Balloon Valvuloplasty for Congenital Pulmonary Valve Stenosis.
Heung Jae LEE ; Jae Kon KO ; Woong Heum KIM ; Nam Su KIM ; Chang yee HONG
Journal of the Korean Pediatric Society 1988;31(7):822-832
No abstract available.
Balloon Valvuloplasty*
;
Pulmonary Valve Stenosis*
;
Pulmonary Valve*
3.A Case of Orbital Liposarcoma.
Young Nim KO ; Young Man KIM ; Chul HONG ; Choong Jae KO
Journal of the Korean Ophthalmological Society 1981;22(2):481-484
Liposarcoma is extremely rare malignant tumor which develops primary in the orbit. Here, we report a case of primary orbital liposarcoma in 17 year old female patient. She visited our hospital due to decreased visual acuity and protrusion of Rt. eyeball. Malignant tumor was suspected by many examination. So exenteration was performed and tumor mass was confirmed as liposarcoma by pathologic examination. She was received cobalt 60 radiation therapy, but recurrent tumor mass appeared at the orbital apex 1 year after operation.
Adolescent
;
Cobalt
;
Female
;
Humans
;
Liposarcoma*
;
Orbit*
;
Visual Acuity
4.The Findings of 2D and M-mode Echocardiography in Young Insulin-Dependent Diabetes Mellitus.
Byoung Rei CHO ; Jae Wook KO ; Young Jin HONG ; Don Hee AHN ; Keun Chan SOHN
Journal of the Korean Pediatric Society 1990;33(1):88-93
No abstract available.
Diabetes Mellitus, Type 1*
;
Echocardiography*
5.Clinical Studies on Ventricular Septal Defect with Septal Aneurysm.
Jae Kon KO ; Jung Yun CHOI ; Yong Soo YUN ; Chang Yee HONG ; Kyung Mo YEON
Journal of the Korean Pediatric Society 1986;29(5):40-45
No abstract available.
Aneurysm*
;
Heart Septal Defects, Ventricular*
6.Idiopathic Left Ventricular Tachycardia in Childhood.
Jae Kon KO ; Young Hwee KIM ; In Sook PARK ; Chang Yee HONG ; Eun Jung BAE
Korean Circulation Journal 1997;27(4):426-432
BACKGROUND: Idiopathic left ventricular tachycardia with a QRS pattern of right bundle branch block and left axis deviation that is sensitive to verapamil is electrophysiologically distinct arrhythmia entity but descriptions in pediatric ages are infrequent. This study attempted to describe the clinical presentation and dignostic clues from the surface ECG in children with idiopathic left venteicular tachycardia. METHODS: We retrospectively reviewed the medical records, electrocardiograms, Holter recordings, echocardiographic reports of 10 children with idiopathic left ventricular tachycardia who have been managed at Sejong General Hospital and Asan Medical Center, Seoul, Korea from January 1991 to July 1996. Follow-up periods are 2 months to 5 years(mean=26 months). RESULTS: 1) Age of tachycardia onset was 8 months to 14 years(median=4.3 years). In 3 children tachycardia began from infancy. The main complaint in older children was palpitation and chest discomfort but young childen complained abdominal pain during tachycardia attack. Tachycardia was paroxysmal and sustained. Tachycardia responded to intravenous use of verapamil in 9 patients and was controlled by chronic verapamil medication in 6 patients. 2 patients were well without medication. Radiofrequency catheter ablation was done in an adolescent patient successfully. 2) In sinus rhythm, surface ECG showed normal QRS axis and normal QRS morphologies in all patients. During ventricular tachycardia, the heart rate was 183 to 270 beats/min. The taxhycardia of RBBB morphology was observed in all patients. The mean QRS duration was 109+-12ms and the QRS axis was -50* to -90*. Themean RS interval was 60+-12ms. AVdissociation was found on surface RCG in all patients and confirmed in 4 patients by transesophageal ECG. We tried rapid transesophageal atrial pacing in 3 patients and could induce and terminate the ventricular tachycardia. CONCLUSIONS: Idiopathic left ventricular tachycaedia is rare in childhood and is seen from infancy. Idiopathic left ventricular tachycardia is generally benign but occasionally causesmyocardial dysfunction. Idiopathic ventricular tachycardia with a QRS pattern of right bundle branch block amd left axis deviation that is sensitive to verapamil in children should not be confused with supraventricular tachycardia with aberrancy and most helpful diagnostic clue is AV dissociation in surface ECG.
Abdominal Pain
;
Adolescent
;
Arrhythmias, Cardiac
;
Axis, Cervical Vertebra
;
Bundle-Branch Block
;
Catheter Ablation
;
Child
;
Chungcheongnam-do
;
Echocardiography
;
Electrocardiography
;
Follow-Up Studies
;
Heart Rate
;
Hospitals, General
;
Humans
;
Korea
;
Medical Records
;
Retrospective Studies
;
Seoul
;
Tachycardia
;
Tachycardia, Supraventricular
;
Tachycardia, Ventricular*
;
Thorax
;
Verapamil
7.The Clinical Observation of Congenital Mitral Insufficiency.
Jae Kon KO ; Jung Yun CHOI ; Young Soo YUN ; Chang Yee HONG
Korean Circulation Journal 1986;16(2):255-261
We reviewed the clinical and hemodynamic studies in 10 patients with the isolated congenital mitral insufficiency. The patients ranged in age from 6 months to 16 years at the time of diagnosis and the incidence was 0.26% among the total congenital heart disease proven by cardiac catheterization and angiography. In two cases anterior mitral cleft was demonstrated by 2-D echocardiography and/or operation. In two cases left coronary artery was originated from pulmonary artery. Eight cases out of ten presented symptoms indicating varying degrees of left ventricular failure. Apical systolic murmur was heard in all except one, who had only triple rhythm. The electrocardiograms revealed left ventricular hypertrophy in 8 cases and biventricular hypertrophy in 2 cases. Roentgenographically left atrial enlargement was observed in 4 cases. Left arterial and ventricular dimension were increased in 7 cases by echocardiography. In 5 cases of them, pulmonary artery wedge pressure or left atrial pressure was increased. One patient died in congestive heart failure at the age of 10 months and one patient died postoperatively. Other 4 patients have been managed with medication without difficulty.
Angiography
;
Atrial Pressure
;
Cardiac Catheterization
;
Cardiac Catheters
;
Coronary Vessels
;
Diagnosis
;
Echocardiography
;
Electrocardiography
;
Heart Defects, Congenital
;
Heart Failure
;
Hemodynamics
;
Humans
;
Hypertrophy
;
Hypertrophy, Left Ventricular
;
Incidence
;
Mitral Valve Insufficiency*
;
Pulmonary Artery
;
Pulmonary Wedge Pressure
;
Systolic Murmurs
8.Clinical Course and Management of Chaotic Atrial Rhythm in Childhood.
Jae Kon KO ; Young Hwee KIM ; In Sook PARK ; Chang Yee HONG
Korean Circulation Journal 1996;26(4):865-871
BACKGROUND: Chaotic atrial rhythm (CAR) is characterized by the presence of three or more P-wave morphologic features on the surface electrogram, absence of a dominant atrial pacemaker, and variable P-P, R-R, and P-R intervals with an atrial rate of over 100 beats/min. CAR is infrequently seen in pediatric ages and its clinical course, management and underlying mechanism are uncertain. We report our recent experience with 11 infants with CAR and describe their clinical characteristics and reponse to treatment. METHODS: We retrospectively reveiwed the medical records, electrocardiograms, Holter recordings, echocrdiographic reports of 11 cases of CAR managed at Sejong general hospital and Asan medical center from January 1991 to June 1995. RESULTS: 1) All patients were < or =6 months old and 5 of 11 patients had symptoms at neonatal period. The duration of follow-up was 3-42 months(mean : 18 months). 2 patients had structural heart disease and 3 patients showed signs of ventricular dysfunction. In 10 of 11 patients tachycardia was sustained or recurrent. 1 patient died of severe congestive heart failure due to incessant rapid tachycardia. 2) 3 of 10 patients took digoxin only and others took more than 2 medications. Full control within 1 month after medication was in 2 patients, with digoxin only in one and digoxin and amiodarone in another patient. At discharge, state of arrhythmia control in 8 patients with medications were full control in 2, good control in 3, and partial control in 3. At last follow-up, full control in 5, good control in 1 were confirmed through Holter recordings and the other 4 patients showed sinus rhythm in surface electrocardiograms. The total duration of medications were < or =1 year except 1 patient. 3) In 3 patients with ventricular dysfunction, ventricular function was normalized after restoration of sinus rhythm. CONCLUSION: CAR in children usually occurs in the first month of life and genenally takes benign course, but sometimes it causes severe congestive heart failure or ventricular dysfunction. Frequently, the patients remain asymptomatic despite persistence of the tachycardia for weeks or months. CAR is difficult to convert to sinus rhythm with medications but tends to resolve spontaneously within 1 year. We think treatment is necessary only in the symptomatic patients with rapid ventricular response and it is enough to control the ventricular rate with antiarrhythmic agents.
Amiodarone
;
Arrhythmias, Cardiac
;
Child
;
Chungcheongnam-do
;
Digoxin
;
Electrocardiography
;
Follow-Up Studies
;
Heart Diseases
;
Heart Failure
;
Hospitals, General
;
Humans
;
Infant
;
Medical Records
;
Retrospective Studies
;
Tachycardia
;
Ventricular Dysfunction
;
Ventricular Function
9.Malignant Mesenchymoma of the Right Axillary Area: A case report.
Sung Ran HONG ; Gui Ohk YOON ; Seong Sook KIM ; Hye Jae CHO ; Il Hyang KO
Korean Journal of Pathology 1986;20(1):107-111
The term malignant mesenchymoma has been applied to those tumors of the soft tissue of mesenchymal origin which are composed of tumor cells differentiating into two or more unrelated malignant forms in addition to the fibrosarcomatous element. Recently authors experienced a case of malignant mesenchymoma in the right axillary area. Microscopically the sarcoma revealed multiple pattern of differentiation, including liposarcoma, malignant schwannoma, fibrosarcoma, malignant fibrous histiocytoma and rhabdomyoblastoma. The presence of rhabdomyblastic cells were proved by immunochemical study utilizing desmin. This patient was treated with surgical excision and radiation.
10.Subpulmonic Ventricular Septal Defect with Aortic Insufficiency.
Jae Kon KO ; Won Soon PARK ; Jung Yun CHOI ; Yong Soo YUN ; Chang Yee HONG
Korean Circulation Journal 1986;16(1):151-154
From January to December 1984, 191 patients with associated ventricular septal defect(VSD) were studied in the cardiac cathetherization laboratory. Among theses 191 cases, 58 cases(30.4%) of subpulmonic VSD were identified by angiocardiography. Among the 59 cases of subpulmonic VSD, 12 cases(20.6%) were complicated with aortic infficiency(AI). The relative frequency of subpulmonic VSD increased with the increase of age and the frequency of complication of AI with the subpulmonic VSD also increased with the increase of age. The amount of left to right shunt in the patients with subpulmonic VSD and AI was small and Qp/Qs ratio was less than 2.0 in all of the 12 cases. Among the 12 patients 4 cases had a pressure gradient greater than 20 mmHg across the infundibular region of the right ventricle.
Angiocardiography
;
Heart Septal Defects, Ventricular*
;
Heart Ventricles
;
Humans