• Journal of Chest Surgery
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• 제23권1호
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• pp.205-212
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• 1990

A 17 year old female patient with Ebstein`s anomaly received surgical treatment for WPW syndrome and AV nodal reentrant supraventricular tachycardia[SVT] Electrophysiologic study revealed that an anomalous pathway was located in the right posterolateral portion and antegrade dual AV nodal pathway responsible for AV nodal reentrant tachycardia. The patient was underwent surgery on February 18, 1987. Intraoperative mapping was used to define the location of accessory pathway. The accessory pathway was cryoablated through the epicardium. Simultaneously discrete cryoablation around the perinodal area was performed to prevent AV nodal reentrant SVT. The atrialized right ventricle of Ebstein`s anomaly was plicated with 11 pledget mattress sutures under the cardiopulmonary bypass. Two and half years after surgery, the patient has no evidence of WPW syndrome or supraventricular tachycardia.

• Journal of Chest Surgery
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• 제26권5호
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• pp.403-408
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• 1993

The atrioventricular node reentrant tachycardia[AVNRT] is a common type of supraventricular tachycardias. Recently we experienced two cases of AVNRT. One is AVNRT with severe aortic regurgitation[grade IV] and the other is AVNRT with patent ductus arteriosus. Dissection of perinodal tissue has been successfully carried out in the beating heart under the normothermic cardiopulmonary bypass, and aortic valve replacement and ligation of patent ductus arteriosus were also performed, respectively. Postoperatively, permanent atrioventricular block was not occured and AVNRT was not developed during the follow up. We propose that the surgical dissection of perinodal tissue is a simple and effective treatment for the patient with refractory AVNRT.

• Journal of Yeungnam Medical Science
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• 제32권2호
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• pp.106-110
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• 2015

The prevalence of pneumothorax cases among Intensive Care Unit patients who require mechanical ventilation ranges from 4%-15%. A pneumothorax remains one of the most serious complications of positive pressure ventilation. It can be diagnosed in a critically ill patient through a physical examination or radiographic studies that include chest radiographs, ultrasonography, or computed tomography scanning. However, in a critically ill patient, the diagnosis of a pneumothorax is often complicated by other diseases and by difficulties in imaging sick and unconscious patients. Although electrocardiogram changes associated with a pneumothorax have been described for many years, there has been no report of such among patients who require mechanical ventilation. In this paper, we report 2 cases of a spontaneous pneumothorax with paroxysmal supraventricular tachycardia in patients who required invasive mechanical ventilation due to acute respiratory failure.

• Neonatal Medicine
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• 제28권2호
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• pp.77-82
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• 2021

We present the case of a healthy 28-day-old female full-term neonate who was admitted to the neonatal intensive care unit for severe metabolic acidosis, hypoglycemia, and an initial sinus rhythm. The first diagnostic hypothesis was hypovolemic shock, and fluid resuscitation was started immediately. During fluid therapy, cardiovascular collapse occurred with supraventricular tachycardia. The latter was successfully treated with adenosine and beta-blockers. After 8 days, electrocardiography showed ventricular pre-excitation, and Wolff-Parkinson-White syndrome was diagnosed. A novel variant of the MYL2 gene that is related to hypertrophic cardiomyopathy and conduction defect was found after discharge. Cardiogenic shock should be considered, despite being a rare cause of shock in neonates.

• Clinical and Experimental Pediatrics
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• 제60권12호
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• pp.390-394
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• 2017

Purpose: Atrioventricular nodal reentry tachycardia (AVNRT) is less common in pediatric patients than in adult patients. Thus, data for pediatric AVNRT patients are insufficient. Hence, we aimed to analyze the patient characteristics, treatment, and any recurrences in pediatric AVNRT patients. Methods: We reviewed the records of 50 pediatric AVNRT patients who had undergone radiofrequency catheter ablation (RFCA) between January 1998 and December 2016 at a single regional center. The patients were aged ${\leq}18years$. Results: Among 190 pediatric patients who underwent RFCA for tachyarrhythmia, 50 (26.3%; mean age, $13.4{\pm}2.6years$) were diagnosed as having AVNRT by electrophysiological study. Twenty-five patients (25 of 50, 50%) were male. Twenty patients (20 of 50, 40%) used beta-blockers before RFCA. All patients had no structural heart disease except 1 patient with valvular aortic stenosis and coarctation of the aorta. RFCA was performed using the anatomic approach under fluoroscopic guidance. The most common successfully ablated region was the midseptal region (25 of 50, 50%). Slow pathway (SP) ablation and SP modulation were performed in 43 and 6 patients, respectively. Complication occurred in 1 patient with complete atrioventricular block. During follow-up, 6 patients had recurrence of supraventricular tachycardia, as confirmed by electrocardiography. Among them, 5 underwent successful ablation at the first procedure. In 1 patient, induction failed during the first procedure. Conclusion: RFCA is safe and effective in pediatric AVNRT patients. However, further research is needed for establishing the endpoints of ablation in pediatric AVNRT patients and for identifying risk factors by evaluating data on AVNRT recurrence after RFCA.

• Clinical and Experimental Pediatrics
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• 제60권11호
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• pp.344-352
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• 2017

Arrhythmias in the neonatal period are not uncommon, and may occur in neonates with a normal heart or in those with structural heart disease. Neonatal arrhythmias are classified as either benign or nonbenign. Benign arrhythmias include sinus arrhythmia, premature atrial contraction, premature ventricular contraction, and junctional rhythm; these arrhythmias have no clinical significance and do not need therapy. Supraventricular tachycardia, ventricular tachycardia, atrioventricular conduction abnormalities, and genetic arrhythmia such as congenital long-QT syndrome are classified as nonbenign arrhythmias. Although most neonatal arrhythmias are asymptomatic and rarely life-threatening, the prognosis depends on the early recognition and proper management of the condition in some serious cases. Precise diagnosis with risk stratification of patients with nonbenign neonatal arrhythmia is needed to reduce morbidity and mortality. In this article, I review the current understanding of the common clinical presentation, etiology, natural history, and management of neonatal arrhythmias in the absence of an underlying congenital heart disease.

• 대한의용생체공학회:학술대회논문집
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• 대한의용생체공학회 1991년도 춘계학술대회
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• pp.94-97
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• 1991

It is well known that multipoint and computerized intraoperative mapping systems improve the results of surgery for Wolff-Parkinson-White syndrome and show tremendous potential for opening an entirely new era of surgical intervention for the more common and lethal types of supraventricular tachyarrhythmias such as atrial flutter and atrial fibrillation. In addition, the ability to map and ablate the sometimes fleeting automatic atrial tachycardia is greatly enhanced by computerized mapping systems. In this study, we have developed 16 channel computerized data analysis system using microcomputer for basic research of electrophysiology and electrical propagation. This system is expected to enable us to study pathophysiology of cardiac arrhythmia and to improve the results of diagnosis and surgical treatment for cardiac arrhythmia.

• Journal of Chest Surgery
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• 제23권1호
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• pp.61-72
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• 1990

From Nov. 1987 to Aug. 1989, 12 patients with coronary occlusive disease underwent coronary bypass surgery at the Department of Thoracic and Cardiovascular Surgery, Catholic University Medical College. The results were as follows: 1. There were 9 males and 3 females ranged in age from 25 to 69 years with a mean of 50.4 years. 2. The prevalent locations of coronary artery stenosis were left anterior descending branch [9 cases], right coronary artery[4 cases], first diagonal branch[3 cases], left circumflex artery [2 cases] in order of frequency. 3, Among 12 cases, 5 cases had an episode of previous myocardial infarction respectively. 4. We performed triple bypass operation in 3 cases, double bypass in 2 cases and single bypass in 7 cases using great saphenous vein. 5. Postoperative complications were cerebral embolism[1, died], pleural effusion[1], temporary cardiac arrest[1], supraventricular tachycardia[1] and late gastric ulcer bleeding[1]. 6. The follow up periods were ranged from 8 months to 30 months and all survivors were on antiplatelet medication showing free of angina.

• Journal of Chest Surgery
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• 제48권1호
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• pp.78-81
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• 2015

This study reports our early experience with thoracoscopic division of vascular rings. Three patients were reviewed; their ages at surgery were 25 months, 4 years, and 57 years. All patients were suffering from complete vascular rings involving combinations of the right aortic arch, left ligamentum arteriosum, Kommerell's diverticulum, and retroesophageal left subclavian artery. The median surgical time was 180.5 minutes, and the patients showed immediate recovery. Three complications, namely chylothorax, transient supraventricular tachycardia, and left vocal cord palsy, were observed. Our early experience indicates that thoracoscopic division of a vascular ring may provide early recovery and could be a promising operative choice.

• Childhood Kidney Diseases
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• 제7권2호
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• pp.204-210
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• 2003

막증식성 사구체 신염은 Berger와 Galle에 의해 처음 기술되어졌고, 전자 현미경상 고밀도로 보이는 물질들이 치밀층에 침착된 것을 특징으로 하므로, dense deposit disease라고 명명하기도 한다. 비록 원인과 병리기전에 대해서는 잘 알려져 있지 않지만, 보체의 대체경로를 활성화시켜 저보체혈증이 일어나는 임상양상으로 미루어 볼 때 이와 연관된 병의 발생기전이 보고되어 있다. 이 질환은 다른 신염에 비해 말기 신부전으로 진행하는 비율이 높아 그 중요성이 있으나 정립된 치료법이 없어 다양한 노력이 시도 중이며 그 효과에 대해서는 아직까지 논란이 있다. 저자들은 내원 3년 전부터 나타난 지속적 반복적 육안적 혈뇨와 단백뇨, 지속적인 보체 감소증이 있었으나 상실성 빈맥증(paroxysmal supraventricular tachycardia) 때문에 신조직 검사를 지연시켜오던 환아에서 2년 정도의 digoxin 복용 후 실시한 7세 여아의 조직검사에서 제 2형 막증식성 사구 체신염으로 진단된 증례를 경험하였기에 문헌 고찰과 함께 보고하는 바이다.