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EPIDEMIOLOGICAL STUDY OF DILATED CARDIOMYOPATHY FROM EASTERN INDIA WITH SPECIAL REFERENCE TO LEFT ATRIAL SIZE | Abstract
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International Journal of Medical Research & Health Sciences (IJMRHS)
ISSN: 2319-5886 Indexed in: ESCI (Thomson Reuters)

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Abstract

EPIDEMIOLOGICAL STUDY OF DILATED CARDIOMYOPATHY FROM EASTERN INDIA WITH SPECIAL REFERENCE TO LEFT ATRIAL SIZE

Author(s):*Rudrajit Paul, Saumen Nandi, Pradip K Sinha

Background: Dilated cardiomyopathy (DCM) is a common cause of emergency visit in our country. The disease is often misdiagnosed and mistreated. There are very few studies on DCM from India. We undertook a small study on DCM patients from Eastern India to find the demographic and echocardiographic characteristics. Patients and methods: We undertook this study in a tertiary care Medical College of Eastern India. All patients coming to the emergency with dyspnea were evaluated for cardiac dysfunction. Emergency echocardiography was done to diagnose dilated cardiomyopathy. Patients with DCM were then evaluated as per protocol. After stabilization, echocardiography was repeated to note the study parameters like left atrial diameter. Standard statistical tests were used. Results: we had a total of 70 patients in our study with a male: female ratio of 43:27. Most patients were aged over 40 years. Patients with COPD, history of radiation, malignancy or drug abuse were excluded. Most patients (47%) were on NYHA stage 3 at the time of presentation. In our patient cohort, 24% were alcoholic and 46% were smokers. Atrial fibrillation was present in 15.7% of the patients and right and left bundle branch block had been present in 8 and 15 patients respectively. In echocardiography, increased left atrial (LA) size (>40 mm) was found in 45 patients. Many patients had valvular regurgitation, mitral, aortic or tricuspid. LA size was positively correlated with left ventricular systolic diameter (r=0.403) and negatively correlated with ejection fraction (r= -0.23). Analysis and conclusion: different ECG abnormalities like bundle branch block and arrhythmias like atrial fibrillation are quite common in DCM. In echocardiography, left atrial size is an important prognostic marker and correlates with left ventricular function.


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