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超声心动图研究房颤与左房关系有临床意义。80例有房颤风心病的左房内径与109例无房颤风心病的左房内径比较,统计学上有非常显著的差异(P<0.01)。风心病房颤发生率与左房大小成正比例关系,左房内径<40mm时,房颤发生率只有5.45％,左房内径40～49mm时,房颤发生率为46.67％,左房内径50～59mm时,房颤发生率为率为62.79％,左房内径60～69mm时,房颤发生率为91.67％,当左房内径达70mm时,房颤发生率高达100％。123例有房颤冠心病左房内径与125例无房颤冠心病左房内径比较,42例有房
Echocardiographic study of the relationship between atrial fibrillation and left atrium has clinical significance. There were statistically significant differences in the left atrial diameter between 80 cases with rheumatic atrial fibrillation and 109 cases with rheumatic heart disease without atrial fibrillation (P <0.01). The incidence of rheumatic atrial fibrillation is directly proportional to the size of left atrium. The incidence of atrial fibrillation is only 5.45% when the diameter of left atrium is less than 40mm. The incidence of atrial fibrillation is 46.67% 59mm, the incidence of atrial fibrillation was 62.79%, the incidence of atrial fibrillation was 91.67% when the left atrial diameter was 60 ~ 69mm, and the incidence of atrial fibrillation was as high as 100% when the left atrial diameter was 70mm. 123 patients with atrial fibrillation coronary heart disease left atrial diameter and 125 cases of atrial fibrillation without coronary heart disease left atrial diameter comparison, 42 cases of atrial