OBJECTIVES: Left @entity67 is known in @entity1 with @entity4794 , but the incidence and cause remain unclear. The incidence and the factors related to @entity1002 were investigated in strictly selected @entity1 with isolated @entity4794 . METHODS: This study investigated 33 @entity1 (5 males, 28 females) with isolated @entity4794 aged 56 +/- 9 years. Left atrial dimension, left ventricular diastolic and systolic dimensions, mitral valve area, and mean transmitral pressure gradient were measured by echocardiography. Left ventricular ejection fraction was measured by Simpson's method. @entity1 were divided into two groups according to the ejection fraction (< 50%, > or = 50%). RESULTS: Seven @entity1 (21%) had decreased left ventricular contraction and 26(79%) had normal contraction. The incidence of @entity1 with @entity955 in the low ejection fraction group was significantly higher than in the normal ejection fraction group(86% vs 31%, p < 0.01). There were no significant differences in the severity of @entity4794 or other echocardiographic indices between the two groups. CONCLUSIONS: Low ejection fraction was present in 21% of @entity1 with @entity4794 . Since @entity955 was more common in @entity1 with low ejection fraction than those with normal ejection fraction, the rhythm disturbance may be related to the decreased left ventricular contraction.

[Impaired left ventricular systolic function in XXXX ].

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients'] @entity955 :: ('MESH:D001281', 'Disease') :: ['atrial fibrillation'] @entity4794 :: ('MESH:D008946', 'Disease') :: ['mitral stenosis'] @entity67 :: ('MESH:D018754', 'Disease') :: ['ventricular dysfunction'] @entity1002 :: ('MESH:D018487', 'Disease') :: ['left ventricular dysfunction']
@entity4794 :: (MESH:D008946,Disease) :: ['mitral stenosis']
