Stable Rates of Obstructive Hypertrophic Cardiomyopathy in a Contemporary Era

Michael Butzner1, Douglas L Leslie1, Yendelela Cuffee1,2

  • 1Department of Public Health Sciences, Pennsylvania State College of Medicine, Hershey, PA, United States.

Insights

Obstructive hypertrophic cardiomyopathy (oHCM) affects 1.65 per 10,000 individuals in the US. Most privately insured oHCM patients remain undiagnosed, highlighting a need for improved clinical identification.

Area of Science:

  • Cardiology
  • Genetics
  • Epidemiology

Background:

  • Hypertrophic cardiomyopathy (HCM) is the most prevalent genetic heart disease in the US.
  • The clinical recognition of obstructive hypertrophic cardiomyopathy (oHCM) remains poorly understood.

Purpose of the Study:

  • To estimate the annual prevalence of clinically diagnosed oHCM in the US between 2016 and 2018.
  • To identify demographic disparities in oHCM diagnosis.

Main Methods:

  • Utilized the MarketScan® database from 2016-2018.
  • Identified patients with International Statistical Classification of Disease and Related Health Problems code I42.1 (oHCM).
  • Calculated and stratified oHCM prevalence by sex and age.

Main Results:

  • In 2016, oHCM prevalence was 1.65 per 10,000, with higher rates in males (2.07) than females (1.26).
  • Prevalence increased with age, peaking in the 55-64 age group (4.82 per 10,000).
  • Prevalence remained stable from 2016-2018 across demographic groups.

Conclusions:

  • The study indicates a significant underdiagnosis of oHCM among privately insured individuals in the US.
  • Findings underscore the necessity for enhanced clinical identification strategies and further research into oHCM.

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