• 한국임상수의학회지
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• 제34권5호
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• pp.353-355
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• 2017

A four month old, intact female Jindo dog presented to the Veterinary Teaching Hospital of Kangwon National University with collapse. Physical examination revealed a heart rate of more than 200 beats per minute. Blood tests showed mild anemia and mild neutrophilia, while thoracic radiography and ultrasonography revealed no remarkable findings. Electrocardiography showed ventricular premature complexes (VPCs). The dog was diagnosed with congenital ventricular tachyarrhythmia. The condition was improved by lidocaine infusion. After 10 days, the dog was discharged from the hospital with a prescription of atenolol, pimobendan, diltiazem, furosemide, spironolactone, and L-carnitine. This dog is still alive after 31 months. However, progressive cardiac remodeling was confirmed on radiography and ultrasonography. Congenital ventricular tachyarrhythmia is rare in dogs, and the prognosis of reported cases is poor. This report describes the long-term successful management of a dog with congenital ventricular tachyarrhythmia.

• Journal of Yeungnam Medical Science
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• 제34권2호
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• pp.208-215
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• 2017

Background: Arrhythmogenic right ventricular cardiomyopathy (ARVC) is a cardiomyopathy characterized by predominant right ventricular fibro-fatty replacement, right ventricular dysfunction and ventricular arrhythmias. It is a rare but important cause of sudden cardiac death in children and young adults. A meta-analysis on risk stratification of major ventricular tachyarrhythmic events indicating the need for implantable cardioverter defibrillator therapy in ARVC was performed. Methods: The pubmed database was searched from its inception to May 2015. Of the 433 citations identified, 12 were included in this meta-analysis. Data regarding major ventricular tachyarrhythmic events were retrieved in 817 subjects from the studies. For the variables, a combined odds ratio (OR) was calculated using a fixed-effects meta-analysis. Results: Extensive right ventricular dysfunction (OR, 2.44), ventricular late potential (OR, 1.66), inducible ventricular tachyarrhythmia during electrophysiology study (OR, 3.67), non-sustained ventricular tachycardia (OR, 3.78), and history of fatal event/sustained VT (OR, 5.66) identified as significant risk factors (p<0.0001). Conclusion: This meta-analysis shows that extensive right ventricular dysfunction, ventricular late potential, inducible ventricular tachyarrhythmia during electrophysiological study, non-sustained ventricular tachycardia, and history of sustained ventricular tachycardia/fibrillation are consistently reported risk factors of major ventricular tachyarrhythmic events indicating implantable cardioverter defibrillator therapy in patients with ARVC.

• 인터넷정보학회논문지
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• 제10권2호
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• pp.179-186
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• 2009

본 논문은 가중 퍼지소속함수 기반 신경망(Neural Network with Weighted Fuzzy Membership Functions, NEWFM)을 이용하여 Creighton University Ventricular Tachyarrhythmia DataBase(CUDB)의 심전도(ECG) 신호로부터 정상리듬(Normal Sinus Rhythm, NSR)과 심실빈맥/심실세동(Ventricular Tachycardia/Ventricular Fibrillation, VT/VF)을 분류하는 방안을 제시하고 있다. NEWFM에서 사용할 특징입력을 추출하기 위해서 첫 번째 단계에서는 웨이블릿 변환(wavelet transform, WT)을 이용하였다. 두 번째 단계에서는 첫 번째 단계에서 생성된 웨이블릿 계수들을 위상공간 재구성(Phase Space Reconstruction, PSR)과 첨단(Peak) 추출 기법의 입력 값으로 이용하여 2개의 특징입력을 추출하였다. NEWFM은 이들 2개의 특징입력을 이용하여 정상리듬과 심실빈맥/심실세동을 분류하였고 그 결과로 90.13%의 분류성능을 나타내었다.

• 한국임상수의학회지
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• 제23권3호
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• pp.329-333
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• 2006

9살령 수컷 져먼 세퍼드종 개가 주기적인 실신 증상으로 내원하였다. 신체 검사, 혈액 생화학 검사 및 진단영상학 검사에서 특별한 이상 소견은 관찰되지 않았다. 실신 직후 실시한 12-lead심전도에서 환견은 심실조기박동을 동반한 악성 심실성 빈맥(torsade depointes)소견이 관찰되었다. Lidocaine정맥주사 후 심실성 부정맥의 빈도수는 감소되었다. 병력과 심전도 검사(event recordings)를 토대로 본 증례를 져먼 세퍼드종의 유전성 심실성 부정맥증으로 진단하였다. 환견은 초기에 sotalol 구강투여로 증상이 개선되었지만 한달 후 특별한 증상 없이 급사하였다. 본 증례는 국내에서 최초로 보고된 유전성 악성 심실성 부정맥증이다.

• 대한임상독성학회지
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• 제9권2호
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• pp.105-108
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• 2011

Aconitine is an anti-inflammatory agent with therapeutic uses in oriental medicine as an analgesic and for treatment of stroke. Because of its sodium channel effect, aconitine can promote undesirable, wide complex tachyarrhythmia. If tachycardia develops during use of aconitine, class Ia and class III anti arrhythmic drugs can be utilized for treatment. However there are no single anti-arrhythmia agents which are uniformly effective. We report a case, characterized by wide complex tachyarrhythmia and severe hypotension, which was successfully treated by simultaneous injections of amiodarone and lidocaine. A 59-year-old woman exhibiting clinical signs of drowsiness as a result of ingesting 6 g of aconitine, was admitted to the emergency department. Initially, wide complex tachyarrhythmia (ventricular tachycardia and pulse rate of 180 beats/min) and severe hypotension (blood pressure of 53/26 mmHg) was observed. After simultaneous injection of amiodarone and lidocaine, the patient's rhythm pattern changed to an accelerated junctional rhythm with ventricular premature complex. Two hours later, the patient's heart pattern became a sinus rhythm. As demonstrated by this case, simultaneous injections of amiodarone and lidocaine can be useful in treating ventricular arrhythmia induced by aconitine.

• Journal of Dental Anesthesia and Pain Medicine
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• 제21권4호
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• pp.363-367
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• 2021

During the perioperative period, anesthesiologists frequently observe cardiac tachyarrhythmia. Ventricular tachycardia is very rare in non-cardiac surgeries. However, it can be fatal when it occurs. Therefore, anesthesiologists should be watchful so as to not to miss ventricular tachycardia and take the appropriate steps to manage it promptly. We present a case, with a review of related literature, in which a non-sustained ventricular tachycardia was observed in a patient who visited the hospital for dental treatment.

• 한국임상수의학회:학술대회논문집
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• 한국임상수의학회 2009년도 춘계학술대회
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• pp.239-239
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• 2009

• 한국콘텐츠학회논문지
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• 제9권7호
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• pp.19-26
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• 2009

본 논문은 가중 퍼지소속함수 기반 신경망(Neural Network with weighted Fuzzy Membership Functions, NEWFM)과 웨이블릿 변환(wavelet transforms, WT)을 이용하여 Creighton University Ventricular Tachyarrhythmia Database(CUBD)의 심전도 신호로부터 정상리듬(normal sinus rhythm, NSR)과 심실 빈맥/세동(Ventricular tachycardia/fibrillation VT/VF)을 검출하는 방안을 제시하고 있다. NEWFM에서 사용할 특정입력을 추출하기 위해서 첫 번째 단계에서는 웨이블릿 변환을 이용하여 스케일 레벨 3과 레벨 4의 주파수 대역에서 d3과 d4의 계수들을 각각 선택하였다. 두 번째 단계에서는 d3과 d4의 계수들에 대한 구간별 표준편차를 이용하여 8개의 특징입력을 추출하였다. NEWFM은 이들 8개의 특정입력을 이용하여 정상리듬과 심실 빈맥/세동을 검출하였고 그 결과로 90.1%의 검출성능을 나타내었다.

• 대한전기학회논문지:시스템및제어부문D
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• 제53권11호
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• pp.780-785
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• 2004

In this paper, we proposed a ventricular fibrillation detection algorithm based on wavelet transform and artificial neural network. we selected RR intervals, the 6th and 7th wavelet coefficients(D6, D7) as features for classifying ventricular fibrillation. To evaluate the performance of the proposed algorithm, we compared the result of the proposed algorithm with that of fuzzy inference and fuzzy-neural network. MIT-BIH Arrhythmia database, Creighton University Ventricular Tachyarrhythmia database and MIH-BIH Malignant Ventricular Arrhythmia database were used as test and learning data. Among the algorithms, the proposed algorithm showed that the classification rate of normal and abnormal beat was sensitivity(%) of 96.10 and predictive positive value(%) of 99.07, and that of ventricular fibrillation was sensitivity(%) of 99.45. Finally. the proposed algorithm showed good performance compared to two other methods.

• The Korean Journal of Pain
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• 제13권1호
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• pp.115-118
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• 2000

Stellate ganglion block is most commonly used in pain clinic because it is an easy procedure and it has broad indications reported that Angina pectoris, tachyarrhythmia and long QT syndrome (LQTS) are indicated. LQTS is a disorder of the abnormalities of cardiac sympathetic innervation and of myocardial repolarization. LQTS is characterized by marked prolongation of the QT interval, often manifestating as syncope, seizures, or sudden death due to polymorphic ventricular tachyarrhythmia known as torsades de pointes. Treatment of symptomatic patients usually begin with beta blocker. The elective treatment of LQTS patients unresponsive to beta blocker is the left cardiac sympathetic denervation. We report a case of LQTS patient who had received stellate ganglion block.