• 제목/요약/키워드: atrial

검색결과 1,099건 처리시간 0.025초

The Difference of Left Atrial Volume Index : Can It Predict the Occurrence of Atrial Fibrillation after Radiofrequency Ablation of Atrial Flutter?

  • Kim, Ung;Kim, Young-Jo;Kang, Sang-Wook;Song, In-Wook;Jo, Jung-Hwan;Lee, Sang-Hee;Hong, Geu-Ru;Park, Jong-Seon;Shin, Dong-Gu
    • 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.

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Intracardiac Signal의 스펙트럼 분석을 통한 Atrial Tachycardia 및 Atrial Fibrillation 검출 (Detection of Atrial Tachycardia and Atrial Fibrillation Using Spectrum Analysis of Intracardiac Signal)

  • 이충근;정보영;이명호;신항식
    • 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.

Comparative Assessment of the Vertebral Left Atrial Size in Healthy Adult Dogs

  • Han, Sung-Hyun;Yun, Mun-Su;Song, Kunho
    • 한국임상수의학회지
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    • 제39권2호
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    • pp.45-50
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    • 2022
  • Vertebral left atrial size can be used as a radiographic tool to evaluate left atrial size in dogs. Vertebral left atrial size has been studied in dogs; however, few studies have been conducted on breed-specific differences in healthy dogs. To study the median vertebral left atrial size differences by breed and to investigate the association between age, sex, body condition score, thoracic depth-to-width ratio, and vertebral left atrial size. A total of 220 dogs of the following breeds: Maltese (n = 73), Beagle (n = 30), Poodle (n = 41), Shih-tzu (n = 44), and Mongrel (n = 32) were reviewed retrospectively. Sex, body weight, age, and body condition score of each dog were collected. Thoracic radiography was conducted for dorsoventral and right/left lateral views in all dogs to measure the vertebral heart score, vertebral left atrial size, and thoracic depth-to-width ratio. No significant differences in the median vertebral left atrial size were found among the breeds. There were no effects of sex, age, body condition score, and thoracic depth-to-width ratio on vertebral left atrial size. There was a significant positive correlation between the vertebral heart score and vertebral left atrial size. Breed, age, sex, and chest conformation did not correlate with vertebral left atrial size.

심장점액종의 외과적 치료 (Clinical Experience of Atrial Myxoma)

  • 라찬영
    • Journal of Chest Surgery
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    • 제22권5호
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    • pp.781-787
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    • 1989
  • Seven patients [six cases of left atrial myxoma, one case of right atrial myxoma] from 24 to 66 years of age [4 male and 3 female, mean age 48 years] underwent excision of atrial myxoma between 1982 and 1989 at Keimyung University Dongsan Medical Center. All patients presented with congestive heart failure, six with cardiac murmur, three with syncope, two with sinus tachycardia, one each with sinus arrhythmia, atrial fibrillation, pleural effusion, peripheral embolization. Symptoms were present from 1 month to 8 years before operation [mean 28 months], All tumors originated from atrial septum and pedunculated. The myxomas were successfully removed in all patients, either shaving them from atrial septum [n=3] or by excising a portion at normal atrial septum with tumor [n=4]. One case was replaced mitral valve with carbomedics-31mm due to severe mitral regurgitation. Follow up is current. No recurrent myxoma has been identified clinically or by echocardiography. In this series, excellent results were obtained by simple excision of the tumor, with or without a margin of normal atrial septum.

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승모판 수술환자에 있어서 심방세동과 색전증에 영향을 주는 요소 (Factors Influencing Atrial Fibrillation & Embolization in Mitral Valve Surgery)

  • 조광조;김종원;정황규
    • 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.

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좌심실-우심방 단락 치험 3예 (Left Ventricular-Right Atrial Canal Three Cases Treated Surgically)

  • 송명근
    • Journal of Chest Surgery
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    • 제13권3호
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    • pp.233-236
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    • 1980
  • Left Ventricular-Right atrial canal, which permits a communication between the left ventricle and right atrium has been reported with increasing frequency. Kirby made the first successful surgical correction in 1957. Recently we experienced 3 cases of left ventricular-Right atrial canal, which were corrected surgically. In one patient the diagnosis of left ventricular-Right atrial canal had been suggested before operation. Preoperative diagnosis had been incorrect in 2 cases; one as an atrial septal defect and the other as combined atrial septal defect and ventricular septal defect. The entire patients were discharged with good results within 2 weeks after operation.

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승모판막질환을 동반하지 않은 심방세동에서의 Cox-Maze 술식 -3례 보고- (The Cox-Maze Procedure for Atrial Fibrillation not Associated with Mitral Valve Disease -Report of three cases-)

  • 강창현;김기봉
    • 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.

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자라 신장기능에 미치는 Atrial Natriuretic Peptide의 효과 (Renal and Hormonal Responses to Atrial Natriuretic Peptide and Furosemide in the Freshwater Turtle, Amyda japonica)

  • 조경우;김선희;고규영;설경환
    • The Korean Journal of Physiology
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    • 제21권1호
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    • pp.13-22
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    • 1987
  • Effects of synthetic atrial natriuretic peptide and furosemide on the cardiovascular and renal functions were examined in the freshwater turtle, Amyda japonica. Both atria and ventricle of turtle contained an immunoreactive atrial natriuretic peptide. Synthetic rat atrial natriuretic peptide (atriopeptin III) and turtle atrial extract caused a decrease in mean arterial blood pressure and the vasodepressor effect was dose-dependent. In hydrated turtles received either atriopeptin III or turtle atrial extract, no significant change in renal function was observed until 100 min except a slight natriuresis at 60 or 100 min after injection of 30 ug/kg atriopeptin III or atrial extract, respectively. However, furosemide, 2 mg/kg, caused marked diuresis, natriuresis and kaliuresis. In non-hydrated turtles, no significant change in renal function was observed until 6 hrs following injection of 30 ug/kg atriopeptin III. Plasma aldosterone decreased at 2 hr and increased at 24 hr after injection of atriopeptin III although plasma renin concentration did not change. But, furosemide caused persistent diuresis, natriuresis and kaliuresis. Additionally, plasma aldosterone and renin concentrations were significantly increased at 24 hrs after injection of furosemide. In conclusion, we suggest that the freshwater turtle may have an atrial natriuretic peptide in heart and vascular receptors for atrial natriuretic peptide, and that atrial natriuretic peptide is more important in the regulation of blood pressure rather than that of renal function in freshwater turtles. We also suggest that an increased plasma renin concentration caused by furosemide may not be due to the sodium concentration delivered to macula densa, but due to the dehydration caused by persistent diuresis and natriuresis.

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심장초음파검사에서 좌심방 확장과 대사증후군 요인과의 상관관계 (Correlation of Left Atrial Enlargement and Metabolic Syndrom Risk Factors in Echocardiography)

  • 배혜진;하명진;김정구
    • 대한방사선기술학회지:방사선기술과학
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    • 제43권3호
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    • pp.177-185
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    • 2020
  • This study investigated the relationship between metabolic syndrom risk factors to patients with left atrial enlargement according to the results of echocardiography. Male were 269(8.9%) and female were 46(1.5%) that of the total 315 patients (10.5%) with left atrial enlargement. In the obesity factors analysis, BMI, WC, and WHtR were associated with left atrial enlargement. Among them, WHtR included the many obese people with left atrial enlargement. In the analysis of blood pressure, The systolic blood pressure was the highest in the borderline hypertension group in the left atrial enlargement and the diastolic blood pressure was the highest in the normal range group in the left atrial enlargement. In the blood result analysis, there was no correlation with left atrial enlargement that total cholesterol, HDL, LDL cholesterol, triglyceride, and fasting blood glucose level were within the normal range. Therefore, obesity and systolic blood pressure were associated with the left atrial enlargement group. However, the systolic blood pressure did not show pathological condition due to borderline hypertension, and the distribution of the left atrial enlargement group was smaller than that of obesity. Obesity, which includes the largest number of left atrial enlargement group, has been identified to be the highest risk factor for left atrial enlargement.

심방세동 환자의 질병관련 지식 정도 (The level of Knowledge Related to Disease in Patients with Atrial fibrillation)

  • 김경희;송주현;신승용
    • 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.