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tlMEAssingbiskf0rtheoilsetoffunctionaldependenceamongoldadults; TherolephysicalperfonnanceJAmGerlatSac, 1995.43:603. {Received :1997-05-14 Revised :1997 -09-25) aged between atrial fibrillation and left ventricular function on Tang Ji Cheng Zhuo CHEN Yu-guo Zhu Shiming atrial fibrillation (AF) is the second most common after premature arrhythmia, its incidence increased with increasing age, the incidence after age 60 is about 2% to 4%. The author uses clinical glistening Epidemiology Methods Retrospective analysis of clinical characteristics of elderly patients with atrial fibrillation and left ventricular function, explore the relationship between the two. A Materials and Methods: Patients with atrial fibrillation group of 176 down, age 60--82 years, mean 68.64-8.6 years,[link widoczny dla zalogowanych], male 92 cases. Female 84 down. The diagnosis of atrial fibrillation based on ECG or Holter recording. Duration of atrial fibrillation in which each Q ≤ 3 months of paroxysmal atrial fibrillation (90 patients),> 3 months of persistent atrial fibrillation (86 down). Control group, 60, male 32. 28 females, aged 60 - 80 years old, mean age 70.8 ± 10.2 years old, had no history of various types of heart Mu, heart failure and cardiac hypertrophy. Application of cardiac function ~ t-type test cardiac ultrasound and color Doppler ultrasound in 86 patients with persistent atrial fibrillation (AF group) and 60 normal elderly detection of left atrial and left ventricular internal diameter,[link widoczny dla zalogowanych], stroke volume, left ventricular ejection fraction and mitral regurgitation rate. Statistically tested using t test and Y II Results: Elderly patients with atrial fibrillation in this group of 65 to 70 year age group and more. Accounted for 36.4% of all cases; incidence between men and women was no significant difference. Out the top three causes of atrial fibrillation were coronary heart disease (25.6%),[link widoczny dla zalogowanych], hypertension (20,5%) and idiopathic atrial fluoride (18.2%). And rheumatic heart disease accounted for only 9.1% of all sick of paroxysmal atrial fibrillation in 38.6%. Persistent atrial fibrillation accounted for 614%. AF group and control group aged left ventricular function in swaddling clothes seized 『left atrial diameter (ram),[link widoczny dla zalogowanych], left ventricular internal diameter (ram), stroke volume (m1), left ventricular ejection fraction (%), Housing fluoride group were 46 .64-124,58.4 ± 14.5,58.74-9.6,51.2 ± 149,[link widoczny dla zalogowanych], the control group were 3874-108,4924-1 Jinan Central Hospital, Shandong Medical University Hospital 2500132 l37, 6444-10.8,57.4 ± 158, AF and two folders back to glistening flap was 2442% (21/86). Control group was 66.7% (4 / 60). The difference was significant (P <0001). Of the discussions: 1 Clinical characteristics of elderly atrial fibrillation: in this group 32 patients with idiopathic atrial fibrillation. 20 patients aged over 70 years, its mechanism and aging lead to degenerative changes related to sinus node. This data shows that most elderly patients because of cardiovascular disease, atrial fibrillation, in which the main coronary heart disease and high blood pressure pain, and these two disorders, onset after the age of 60. Therefore, patients with atrial fibrillation in this group 65 to 70 age group with the highest incidence of coronary heart disease and the incidence of hypertension increased with increasing age have the characteristics of the relevant past studies have shown that rheumatic heart disease is the most common cause of atrial fibrillation, but this set of data stroke, heart disease aged proportion of atrial fibrillation is a small saddle. Consider the low prevalence of rheumatic heart disease with the elderly about. Our data also show a sustained atrial fibrillation aged fluoride majority. The cause of paroxysmal atrial fibrillation in idiopathic pulmonary heart disease and atrial fibrillation based. The reason may be related to aging, hypoxia, hypercapnia and hemodynamic disorders and other factors. 2 old relationship between atrial fibrillation and left ventricular function: We found that elderly AF group than in stroke volume and left ventricular ejection fraction was significantly decreased, while the left atrial diameter, left ventricular diameter and mitral regurgitation rate than the control was significantly higher (P <005 ~ 0.001), suggest elderly patients with atrial fibrillation have decreased left ventricular systolic function in atrial fibrillation when the ventricular rate as the acceleration of heart as a insufficiency and other factors that reduce cardiac output and cardiac function decreased. and left ventricular function and can reduce the increased left ventricular preload, left ventricular end-diastolic filling pressure increased. coupled with the second cast of back flap missing. lead to increased left atrial pressure and Left atrial enlargement. ultrastructure of myocardial damage and not homogeneous, self-discipline and excitement of cardiac conduction abnormalities and AF '(Received :1997-05-14 Revised} 1997-09-10)
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