BACKGROUND: Myocardial involvement occurs in about 20% of @entity1 with @entity2406 . The purpose of this study was to determine the prevalence of conduction disturbances, their association with other manifestations of the disease. OBJECTIVE: Determine the prevalence of @entity299 in @entity1 with @entity2406 attended in an institute in Mexico City and their relation with other manifestations of the disease. METHODS: One hundred thirteen @entity1 admitted to the Institute with a diagnosis of @entity2406 were divided into those with conduction disturbances (n = 23) and those without (n = 90). Over a mean follow-up of 10.2 +/- 7.8 years, clinical course, treatment, duration of the disease, types of conduction disturbances and systemic alterations were examined. RESULTS: There was an overwhelming predominance of @entity1 in both groups. Conduction disturbances occurred in about 20% of the @entity1 with @entity2406 and that was not possible to find significant differences in the outcome of them. As could be expected a significant difference between the two groups was QRS axis, related to anterior hemiblock, the most common conduction alteration observed. During the follow-up one @entity1 death in-group A, but none in group B. CONCLUSION: Conduction disturbances were present in 20%; in agree with other authors in the literature. However, did not participate in the outcome of the disease.

@entity299 in XXXX .

@entity1 :: ('9606', 'Species') :: ['women', 'patients', 'patient'] @entity299 :: ('MESH:D006331', 'Disease') :: ['cardiac conduction disturbances'] @entity2406 :: ('MESH:D008947', 'Disease') :: ['mixed connective tissue disease']
@entity2406 :: (MESH:D008947,Disease) :: ['mixed connective tissue disease']
