• Journal of Chest Surgery
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• 제12권1호
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• pp.23-29
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• 1979

Hyuk An, M.D.Atrial myxoma constitutes the most significant of all cardiac neoplasm. About 75% occur in the left atrium and 25% in the right. They may cause severe and progressive disease mimicking valvular heart disease. But recently attention to differential point in the clinical features along with various diagnostic techniques have allowed pre-operative diagnosis in the most cases. From April, `77 to Aug., `78, three cases of left atrial myxoma and one case of right atrial myxoma were operated in Seoul National University Hospital. Pre-operative diagnosis was established with echocardiography and cardiac angiography. In all cases, tumors were resected with cardiopulmonary bypass successfully, and discharged with good results.

• Clinical and Experimental Pediatrics
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• 제57권7호
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• pp.297-303
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• 2014

Transcatheter closure of atrial septal defects has become a popular procedure. The availability of a preprocedural imaging study is crucial for a safe and successful closure. Both the anatomy and morphology of the defect should be precisely evaluated before the procedure. Three-dimensional (3D) echocardiography and cardiac computed tomography are helpful for understanding the morphology of a defect, which is important because different defect morphologies could variously impact the results. During the procedure, real-time 3D echocardiography can be used to guide an accurate closure. The safety and efficiency of transcatheter closures of atrial septal defects could be improved through the use of detailed imaging studies.

• Journal of Chest Surgery
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• 제10권1호
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• pp.164-172
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• 1977

This is a report of a case in which a left atrial myxoma was successfully removed by total cardiopulmonary bypass with total hemodilution and moderate hypothermia. The patient was a 17 old girl with mitral valvular symptoms that occured suddenly three months prior to operation. After the onset of symptoms. it was progressively aggravated to serious general condition. The preoperative diagnosis of left atrial tumor was made from echocardiography. and the tumor was confirmed as myxoma by the histopathological examination of the tumor tissue removed during operation. The myxoma was unusually originated from posterior wall of the left atrium. which was located between drainage orifices of right and left pulmonary veins, The tumor developed in the left atrial cavity and one of the polypoid processes of the myxoma was prolapsed into the the left ventricle through the mitral orifice. Following operation. there was no evidence for peripheral vascular embolism, and all valvular symptoms disappeared. The postoperative course was uneventful.

• Journal of Chest Surgery
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• 제28권4호
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• pp.335-339
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• 1995

Secundum atrial septal defect occupies about 10 to 15% of congenital heart diseases, and the surgical accomplishment is outstanding, so that the operative mortality is getting near to zero percent. But, the methods of correction, direct closure versus patch closure are still controversial and there is no absolute method about it. Some surgeons prefer direct closure technique for its simplicity and lesser thrombogenicity but others, afraid of arrhythmia and suture detachment after closure of large defect, prefer patch closure. Usually most surgeons use direct suture technique in small and moderate sized defects and patch closure in large defects. In our hospital, 156 cases of isolated secundum atrial septal defect were closed directly by double continuous over and over suture using 5-0 polypropylene[prolene , regardless their sizes and the amounts of shunt flow. There were no operative mortality and no serious complications such as heart block, suture detachment and embolism.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2005년도 학술대회 논문집 정보 및 제어부문
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• pp.29-31
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• 2005

Detection methods for atrial tachycardia and fibrillation on the time axis have the advantages of light operational load and are easy to apply to various applications. Despite these advantages, arrhythmia detection algorithm on the time axis cannot stand much noise such as motion artifacts, moreover the peak detection algorithm has high complexity. In this paper, we use a spectrum analysis method for the detection of atrial tachycardia and fibrillation. By applying spectrum analysis and digital filtering on obtained electrogram signals, we can diagnose heart arrhythmia without using peak detection algorithm.

• Journal of Chest Surgery
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• 제25권6호
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• pp.672-677
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• 1992

This is a clinical review of the results from electric cardioversion and pharmacological therapy used in our hospital for reverting cardiac arrythmia in patients with mitral valve surgery between Jan. 1990 and Jun. 1991. Of 62 evaluated patients, 16 patients had regular sinus rhythm and the other 46 had arrhythmias [42; atrial fibrillation 1; atrial flutter 1; premature ventricular contraction] preoperatively. In 2 of patients with sinus rhythm, atrial fibrillation newly developed after surgery and was converted into sinus rhythm soon by intravenous administration of digoxin. Remaining 14 patient resumed sinus rhythm spontaneously. In patients with preoperative arrythmia, 3 patients reverted into sinus rhythm from atrial fibrillation by electric cardioversion at operative field, 1 patient by lidocain and mexiletine, 4 patients by combined use of digoxin and verapamil, 4 patients by 2 times of oral quinidine and 9 patient by long term use of oral amiodarone. Throughout this consecutive trials of anti-arrhythmic drugs and electric cardioversion, Conversion into normal sinus rhythm occurred in 48% of patients with arrhythmia developed after mitral valve surgery.

• Journal of Chest Surgery
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• 제50권2호
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• pp.110-113
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• 2017

A 43-year-old man who had had a history of atrial septal defect (ASD) device closure 31 months previously presented with abrupt chest and back pain along with progressive cardiogenic shock and cardiac arrest. After resuscitation, he was diagnosed with cardiac tamponade. Diagnostic and therapeutic surgical exploration revealed left atrium (LA) perforation due to LA roof erosion from a deficient aortic rim. Device removal, primary repair of the LA perforation site, and ASD patch closure were performed successfully. The postoperative course was uneventful. The patient was discharged after 6 weeks of empirical antibiotic therapy without any other significant complications.

• 대한한의학회지
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• 제18권2호
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• pp.267-272
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• 1997

The aim of the present experiments was to investigate the effect of Yukmijihwangtang water extracts on the plasma renin activity and plasma levels of atrial natriuretic peptide and aldosterone in rats. The results of this study were as follows: 1. Plasma renin activity decreased significantly after the administration of Yukmijihwangtang water extracts 1.5ml/kg. 2. Plasma levels of atrial natriuretic peptide (ANP) decreased significantly after the administration of Yukmijihwangtang water extracts. 3. Plasma levels of aldosterone increased significantly after the administration of Yukmijihwangtang water extract.

• 대한한의학회지
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• 제17권2호
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• pp.291-295
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• 1996

The aim of this experiments was to investigate the effecd of Radix Aconiti water extrac on the plasma renin activity and plasma levels of aldosterone and atrial natriuretic peptide in rats. The results of study were as follows; Plasma renin activity was decreased significantly after administration of Radix Aconiti water extract. Plasma levels of aldosterone was decreased significantly after administration of Radix Aconiti water extract. Plasma levels of atrial natriuretic peptide was not changed after administration of Radix Aconiti water extract.

• 동의생리병리학회지
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• 제16권3호
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• pp.490-494
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• 2002

The purpose of this study is to investigate the effect of Shudihuang water extracts on the cGMP production of medulla and cortical membranes, receptors for atrial natriuretic peptide in the kidney by in vitro autoradiography in rats for 8, 16 weeks. The cGMP production of medullary and cortical membranes of the kidney decreased after the administration of Shudihuang water extracts. The density of receptors for atrial natriuretic peptide in the kidney decreased after the administration of Shudihuang water extracts only for 16 weeks. These results suggest that the long term administration of Shudihuang water extracts has decreased plasma renin activity and plasma levels of aldosterone modulated cGMP production of medullary and cortical membranes, density of receptors for atrial natriuretic peptide in the kidney.