Echocardiographic Profile of Hypertrophic Cardiomyopathy – A Single-Centre, Observational study

Authors

  • AKM Monwarul Islam Department of Cardiology, NICVD, Dhaka, Bangladesh
  • Dipal K Adhikary Department of Cardiology, Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
  • Shovan Rahman Department of Cardiology, NICVD, Dhaka, Bangladesh
  • Mohsin Ahmed Department of Cardiology, NICVD, Dhaka, Bangladesh
  • Md Toufiqur Rahman Department of Cardiology, Col. Malek Medical College, Manikgonj, Bangladesh
  • Mohammad Ullah Department of Cardiology, Sir Salimullah Medical College, Dhaka, Bangladesh
  • Abdullah AS Majumder Department of Cardiology, Bangladesh Specialized Hospital, Dhaka, Bangladesh

DOI:

https://doi.org/10.3329/cardio.v14i1.55367

Keywords:

Echocardiography, Hypertrophic Cardiomyopathy, Phenotype, Bangladesh

Abstract

Background: Hypertrophic cardiomyopathy (HCM) is an autosomal dominant disease of left ventricular hypertrophy (LVH). Phenotypic expression varies widely from subclinical hypertrophy to gross asymmetric septal hypertrophy causing left ventricular outflow tract (LVOT) obstruction. On top of genetic and phenotypic heterogeneity, the prevalence of different types of HCM may have geographical, as well as, ethnic variation.

Methods: This observational study was carried out during 2010 to 2020 to determine the echocardiographic profile of HCM in Bangladeshi population. All patients undergoing transthoracic echocardiography (TTE) in a private consultation centre of Dhaka, Bangladesh were included. HCM was defined as the presence of a maximal end-diastolic wall thickness of e”15 mm anywhere in the left ventricle (LV), in the absence of another cause of hypertrophy in adults. HCM was further classified according to the pattern of myocardial hypertrophy and presence or absence of LVOT, or mid-left ventricular cavity obstruction.

Results: Out of 76 cases, non-obstructive HCM was the commonest type (65.8%), followed by HCM causing LVOT obstruction (13.2%), HCM causing mid-LV cavity obstruction (10.5%), and the apical variety ( 10.5%). Asymmetric septal hypertrophy (ASH) was found in 42.1%, systolic anterior motion (SAM) of anterior mitral leaflet (AML) in 14.5%, mitral regurgitation (MR) in 50%, left ventricular systolic dysfunction in 5.3%, and raised pulmonary artery systolic pressure (PASP) in 15.8% of cases. Maximum LV wall thickness ≥30 mm was found in 66 out of 76 cases.

Conclusion: The study highlights the clinically useful profile of HCM in Bangladeshi population based on conventional echocardiography. Further studies involving clinical, newer echocardiographic modalities and genetic analyses are warranted to discover the additional information in this ethnicity.

Cardiovasc j 2021; 14(1): 5-11

Downloads

Download data is not yet available.
Abstract
44
PDF
32

Downloads

Published

2021-09-15

How to Cite

Islam, A. M. ., Adhikary, D. K. ., Rahman, S. ., Ahmed, M. ., Rahman, M. T. ., Ullah, M. ., & Majumder, A. A. . (2021). Echocardiographic Profile of Hypertrophic Cardiomyopathy – A Single-Centre, Observational study. Cardiovascular Journal, 14(1), 5–11. https://doi.org/10.3329/cardio.v14i1.55367

Issue

Section

Original Articles