Influência da fibrilação atrial na história natural da cardiomiopatia hipertrófica / The Influence of Atrial Fibrillation in the Natural History of Hypertrophic Cardiomyopathy
Arq. bras. cardiol
;
62(5): 337-341, maio 1994. ilus, tab
Article
in Portuguese
| LILACS
| ID: lil-159845
ABSTRACT
PURPOSE--To evaluate the influence of atrial fibrillation in the natural history of hypertrophic cardiomyopathy. METHODS--Eighty-eight patients under ambulatory treatment were studied. Most of them presented the asymmetric type of hypertrophic cardiomyopathy (87.5 per cent). Group I (77 cases) was formed by patients who had never had atrial fibrillation and group II (11 cases) by those who had this arrhythmia paroxysmal or established. RESULTS--In group I, with ages 48.02 +/- 14.82 years, left atrial dimensions 4.21 +/- 0.66 cm, there was one sudden death; 69 were treated by clinical means and 7 by surgery; no patient developed thromboembolism neither cardiac failure. In group II, with ages 58.02 +/- 11.04 years and left atrial dimension 5.32 +/- 0.45 cm, there were 4 deaths, 4 thromboembolisms and 3 with cardiac failure; all received only clinical treatment, having improved in clinical status in 71.42 per cent after amiodarone therapy. CONCLUSION--Atrial fibrillation was present in 12.5 per cent, mostly in the asymmetric type, and in patients after 5th decade, all of them with enlarged left atrium (> 4.7 cm), with highest morbidity (thromboembolism and cardiac failure) and mortality. Among the survivors, amiodarone therapy improved functional class in 71.42 per cent
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Atrial Fibrillation
/
Cardiomyopathy, Hypertrophic
Limits:
Adolescent
/
Adult
/
Aged
/
Female
/
Humans
/
Male
Language:
Portuguese
Journal:
Arq. bras. cardiol
Journal subject:
Cardiology
Year:
1994
Type:
Article
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