The association between brain natriuretic peptide and tissue Doppler parameters in children with hypertrophic cardiomyopathy

  • Taliha Öner Izmir Dr. Behçet Uz Children's Hopsital Department of Pediatric Cardiology, Izmir/Turkey
  • Rahmi Özdemir Izmir Dr. Behçet Uz Children's Hopsital Department of Pediatric Cardiology, Izmir/Turkey
  • Filiz Hazan Izmir Dr. Behçet Uz Children's Hopsital Department of Pediatric Genetics, Izmir/Turkey
  • Cem Karadeniz Izmir Dr. Behçet Uz Children's Hopsital Department of Pediatric Cardiology, Izmir/Turkey
  • Önder Doksoz Izmir Dr. Behçet Uz Children's Hopsital Department of Pediatric Cardiology, Izmir/Turkey
  • Murat Muhtar Yilmazer Izmir Dr. Behçet Uz Children's Hopsital Department of Pediatric Cardiology, Izmir/Turkey
  • Timur Meşe Izmir Dr. Behçet Uz Children's Hopsital Department of Pediatric Cardiology, Izmir/Turkey
  • Vedide Tavli Izmir Dr. Behçet Uz Children's Hopsital Department of Pediatric Cardiology, Izmir/Turkey
Keywords: Hypertrophic cardiomyopathy, molecular genetics, brain natriuretic peptide, tissue Doppler flow, left ventricular outflow tract obstruction

Abstract

In this study, we investigated the association between brain natriuretic peptide (BNP) levels and tissue Doppler imaging measurements and also screening for deadly mutations in patients with hypertrophic cardiomyopathy (HCM). We enrolled 20 patients diagnosed with HCM (age:10.7±5 years (1-17), 85% male, weight:42.25±23.10 kg, height:141.80±32.45 cm) and 20 age, gender and body weight-matched control subjects. We performed electrocardiography, transthoracic echocardiography, and tissue Doppler echocardiography in each group, as well as genetic tests (for Arg403Gln, Arg453Cys, Arg719Trp and Arg719Gln mutations in MYH7 Exons 13, 14, 19) and BNP in the patients. The patients were divided into two groups according to the presence (Group 1) or absence (Group 2) of left ventricular (LV) outflow tract obstruction. QTc dispersion and the LV ejection fraction and left atrial (LA) volume index were increased in Group 1. The LA volume index and the mitral and septal E/Ea ratio and septum Z-score were increased while the mitral lateral annulus and septal annulus Ea wave velocities and the mitral and tricuspid E/A ratio were decreased in patients with high levels of BNP compared to those with normal BNP levels. There were no mutations that are associated with increased risk of sudden death found in patients included in this study. In the light of our data, we conclude that such parameters BNP levels above the 98 pg/mL, septal thickness Z-score ˃6, and higher mitral and septal E/Ea ratios can be used for management of patients with HCM according to life-threatening conditions.

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The association between brain natriuretic peptide and tissue Doppler parameters in children with hypertrophic cardiomyopathy
Published
2016-01-01
How to Cite
1.
Öner T, Özdemir R, Hazan F, Karadeniz C, Doksoz Önder, Yilmazer MM, Meşe T, Tavli V. The association between brain natriuretic peptide and tissue Doppler parameters in children with hypertrophic cardiomyopathy. Bosn J of Basic Med Sci [Internet]. 2016Jan.1 [cited 2020Aug.9];16(1):58-3. Available from: http://www.bjbms.org/ojs/index.php/bjbms/article/view/670
Section
Translational and Clinical Research