• Journal of Chest Surgery
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• 제25권12호
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• pp.1404-1415
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• 1992

To understand the factors influencing Atrial fibrillation and embolism in mitral valve surgery and prevent their risk, we have reviewed our 324 patients who underwent mitral valve surgery from Fev. 1982 to May 1992. Age, disease duration, lesion type, left ventricular function and left atrial dimension were chosen as preoperative factors influencing the incidence of atrial fibrillation and embolism and their postoperative course, The number and type of replaced valve, site of atriotmy, LA obliteration, ACT and use of Defibrillator were chaser. as operative factors influencing postoperative rhythm change and postop emb-olization. The results of analyses were as follows 1. The incidence of preoperative atrial fibrillation, systemic embolism and LA throbmus was 63. 6%, 10.56% and 19.8% relatively. 2. The preoperative factors of atrial fibrillation onset was old age, prolonged symptom duration, stenotic lesion, lager LAD and lower ejection fraction. In the preoperative systemic embolism preoperative factors were old age, female, stenotic lesion. The left atrial thrombus found more commonly in patients with atrial fibrillation, old age, prolonged symptom duration, stenotic lesion and low ejection fraction. 3. The preoperative atrial fibriation persisted postoperatively in 165[50.9%] and converted to normal sinus rhythm in 50[15.4%]. The preoperative normal sinus rhythm per-eisted in 100[31%] and atrial fibrillation was occured postoperatively in 9[2.7%]. The prolonged symptom duration was the preoperative factor of persist atrial fibrillation. 4. Among 95 long term follow-up patients, atiral fibrillation was continued in 59[60%]. Conversion to normal sinus rhythm was more common significantly in left atriotomy and bileaflet valve replacement. 5. There were 12 patients who had postoperative embolism. Female, persist atrial fibrillation, no LA olbiteration and tilting disc monocusp valve were considered as possible factors influencing postoperative embolism but was impossible to analyse their statistical significance due to small sample size. So we have concluded that the patients with above risk factors need anticoagulant and early surgical intervention. Left atriotomy with minimal atrial injury, left auricular obliteration and bileaflet valve replacement may be needed to reduce postoperative atrial fibrillation persist and embolism.

• 한국융합학회논문지
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• 제12권6호
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• pp.249-258
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• 2021

본 연구는 심방세동 환자를 대상으로 심방세동 질병관련 지식 정도를 파악하고자 시도되었다. 지식측정을 위해 JAKQ와 KAFSP 측정 도구를 사용하였으며, 222명의 대상자가 설문지에 응답하였다. JAKQ와 KAFSP의 평균 점수는 각 54.7점, 18.5점이었으며. 심방세동 환자들은 대체로 심방세동이 뇌졸중을 유발하며, 혈전 예방을 위해 항응고제를 복용해야 하는 점에 대해 잘 알고 있었으나, 항응고제 복용 시 주의사항과 심방세동의 증상 및 치료법에 대한 지식은 부족하였다. 항응고요법에 따른 심방세동 질병관련 지식 점수는 통계적으로 유의한 차이는 없으며, VKA 관련 지식의 정도가 낮았다. 또한, JAKQ와 KAFSP 모두 교육수준에 따른 심방세동 질병관련 지식 점수는 통계적으로 유의한 차이가 있었다. 이러한 결과를 바탕으로 심방세동 환자의 지식 향상을 위해 맞춤형 교육프로그램 개발이 필요함을 알 수 있다.

• Journal of Chest Surgery
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• 제31권12호
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• pp.1230-1233
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• 1998

The Cox-Maze procedure was developed as a cure for atrial fibrillation. The recovery rate of both atrial contractility is reported low in the atrial fibrillation associated with mitral valvular heart disease than that of loan atrial fibrillation. We performed the Cox-Maze procedure (Maze III) in three cases who suffered from non-mitral heart diseases associated with atrial fibrillation: A ruptured sinus of Valsalva aneurysm, a ventricular septal defect, and an aortic stenoinsufficiency. The Cox-Maze procedure was performed concomitantly with correction of the underlying heart disease. Conversion to sinus rhythm was achieved in all three patients, and both right and left atrial mechanical activities could be identified echocardiographically after three postoperative months.

• 대한전기학회논문지:시스템및제어부문D
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• 제55권3호
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• pp.142-145
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• 2006

Detection methods for atrial tachycardia and atrial 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 atrial fibrillation. By applying spectrum analysis and digital filtering on obtained electrogram signals, we can diagnose heart arrhythmia without using peak detection algorithm.

• Journal of Yeungnam Medical Science
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• 제24권2호
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• pp.197-205
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• 2007

Background : The occurrence of atrial fibrillation after ablation of atrial flutter is clinically important. We investigated variables predicting this evolution in ablated patients without a previous atrial fibrillation history. Materials and Methods : Thirty-six patients (Male=28) who were diagnosed as atrial flutter without previous atrial fibrillation history were enrolled in this study. Group 1 (n=11) was defined as those who developed atrial fibrillation after atrial flutter ablation during 1 year follow-up. Group 2 (n=25) was defined as those who has not occurred atrial fibrillation during same follow-up term. Echocardiogram was performed to all patients. We measured left atrial size, left ventricle end diastolic and systolic dimension, ejection fraction and left atrial volume index before and after ablation of atrial flutter. The differences of each variables were compared and analyzed between two groups. Results : The preablation left ventricular ejection fraction (preLVEF) and postablation left ventricular ejection fraction (postLVEF) are $54{\pm}14%$, $56{\pm}13%$ in group 1 and $47{\pm}16%$, $52{\pm}13%$ in group 2. The differences between each two groups are statistically insignificant ($2.2{\pm}1.5$ in group 1 vs $5.4{\pm}9.8$ in group 2, p=0.53). The preablation left atrial size (preLA) and postablation left atrial size (postLA) are $40{\pm}4mm$, $41{\pm}4mm$ in group1 and $44{\pm}8mm$, $41{\pm}4mm$ in group 2. The atrial sizes of both groups were increased but, the differences of left atrial size between two groups before and after flutter ablation were statistically insignificant ($0.6{\pm}0.9mm$ in group 1 vs $-3.8{\pm}7.4mm$ in group 2, p=0.149). The left atrial volume index before flutter ablation was significantly reduced in group 1 than group 2 ($32{\pm}10mm^3/m^2$, $35{\pm}10mm^3/m^2$ in group 1 and $32{\pm}10mm^3/m^2$, $29{\pm}8mm^3/m^2$ in group 2, p<0.05). Conclusion : The difference between left atrial volume index before and after atrial flutter ablation is the robust predictor of occurrence of atrial fibrillation after atrial flutter ablation without previous atrial fibrillation.

• Journal of Korean Neurosurgical Society
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• 제53권6호
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• pp.368-370
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• 2013

Post-stroke atrial fibrillation has been frequently reported especially in the patients with right insular infarct as an evidence of cerebrogenic mechanism affecting on cardiac rhythm. However, conversion to normal sinus rhythm after stroke in patients who had atrial fibrillation has not been reported. A 88-year-old men who had untreated atrial fibrillation was admitted to hospital due to left middle cerebral artery territory infarction. During admission, second ischemic attack occurred in right middle cerebral artery territory. At that time, his atrial fibrillation converted spontaneously to normal sinus rhythm. Restored sinus rhythm sustained until he died due to sepsis. This case is evidence supporting a theory that brain is associated with control of cardiac rhythm. If no risk factor is revealed by intensive investigation in patients with acute cerebral infarctions that cardioembolism is strongly suspected as a cause, physicians should concern transformation of atrial fibrillation to normal sinus rhythm after stroke.

• Journal of Chest Surgery
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• 제31권1호
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• pp.59-65
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• 1998

심방세동은 심부정맥중 가장 흔한 질환이다. 이환율과 사망율에 있어서 심각한 문제를 일으킬 수 있으며 약물치료에 반응을 않하는 경우가 많다. 실험적 및 임상적 연구의 측면에서 볼 때, 거대회귀성 회로의 존재와 소회귀성 회로 혹은 심방의 자동성의 결핍을 근거로 심방세동에 대한 수술적 절제가 가능하다고 확신한다. maze III술식을 통해서 술후 동성 율동으로의 회복 빈도 증가, 장기적으로 볼 때 동방결절의 기능 향상, 인공심박동기의 사용 감소, 부정맥의 재발 감소, 심방의 전달 기능의 장기적 측면에서의 향상 등의 효과를 기대할 수 있다. 본원에서는 만성 심방세동을 가진 4명의 환자를 치험했다. 심방중격결손증 및 심방세동을 가진 환자에대해 Hioki술식을 시행했으며 술후 심전도상 정상 동방율동을 보였으나 술후 3년후에 접합부율동 및 서맥을 보였다. 승모판막질환 및 심방세동을 가진 나머지 3명의 환자에 대해서는 maze III술식을 시행했으며, 수술직후 2명의 환자에서는 규칙적인 동방율동을 보였으며, 1명의 환자에서는 심방세동을 보여서 amiodarone으로 조절하였다. 술후 3개월후 규칙적인 동방율동을 보이는 2명의 환자에 대해 심초음파를 실시한 결과 우심방의 수축은 양호하나 좌심방의 수축은 미미한 편이였다.

• 사상체질의학회지
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• 제16권3호
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• pp.114-117
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• 2004

1. Objectives As we advance to senior society the incidence rate of heart disease such as atrial fibrillation grows higher. These heart disease can also be treated by Sasang constitutional medical diagnosis and treatment. 2. Methods There is one case-report of the patient who has severe atrial fibrillation and was treated with Sasang constitutional medicine and Westen medicine as well. 3. Results The patient had shown remarkable clinical effects, especially when Sasang Constitutional Medical treatment was practiced. 4. Conclusions Thus we report the healing process and result of this atrial fibrillation.

• 한국정보통신학회논문지
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• 제16권5호
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• pp.1047-1054
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• 2012

심방세동(Atrial Fibrillation:AF)은 각종 심장질환에서 비교적 빈번히 발생하는 부정맥으로 알려져 있으며, 그 발병률은 연령의 증가와 더불어 점차 증가한다. 전통적으로 심방세동을 검출하는 방법은 시간 영역 분석법과 주파수 영역분석법이 대부분이었다. 하지만 심전도 신호는 잡음의 영향을 많이 받는 환경에서 검출의 정확도가 떨어지며, 시간 주파수 영역 분석법은 RR 간격에 따라 변화하는 불규칙적 리듬에 관한 정보를 정확하게 얻지 못하는 단점이 있다. 본 연구에서는 부호화와 정보 엔트로피에 기반한 AF 패턴 분석 방법을 제안한다. 이를 위해 먼저 RR 간격 데이터를 차분 분할 방식을 통해 부호 서열화 한 후 그 리듬에 대한 패턴을 분석하고 이를 샤논의 정보 엔트로피를 통해 복잡도를 정량화하여 심방세동을 검출하였다. 성능 평가를 위해 10부터 100까지의 문턱값에 따른 엔트로피를 통해 복잡도를 분석하였으며 MIT-BIH 심방세동 데이터베이스를 이용하여 실험하였다.

• Journal of Chest Surgery
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• 제46권6호
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• pp.461-463
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• 2013

We report the case of a 72-year-old female with persistent atrial fibrillation who underwent a totally thoracoscopic ablation. A successful normal sinus conversion was achieved.