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Heterogeneity of regional systolic function detected by tissue Doppler imaging is linked to impaired global left ventricular relaxation in hypertrophic cardiomyopathy
- Source :
- Heart (British Cardiac Society). 94(10)
- Publication Year :
- 2008
-
Abstract
- To evaluate regional and global left ventricular (LV) function and LV wall thickness (LVWT) in patients with hypertrophic cardiomyopathy (HCM).Observational study at the National Cardiovascular Centre and Nagoya University Hospital in Japan.Thirty-six patients with HCM and 16 patients with hypertensive LV hypertrophy (LVH).Conventional echocardiography and strain rate (SR) imaging derived from tissue Doppler imaging were performed. Systolic strain (epsilon(sys)), peak systolic SR (SR(sys)), peak early diastolic SR (SR(dia)) and LVWT were obtained from eight LV segments. LV pressure was simultaneously recorded with a high-fidelity micromanometer.The regional epsilon(sys) and SR(sys) were correlated with LVWT in patients with HCM (r = 0.50, p0.001 and r = 0.63, p0.001, respectively) but not in patients with hypertensive LVH. The standard deviations of LVWT, epsilon(sys) and SR(sys) obtained from the eight LV segments of each subject were greater for patients with HCM than for patients with hypertensive LVH. The standard deviation of LVWT was correlated with those of epsilon(sys) and SR(sys) (r = 0.55, p0.001 and r = 0.56, p0.001, respectively). The standard deviations of LVWT, epsilon(sys) and SR(sys) were correlated with tau (r = 0.35, p0.05; r = 0.47, p0.001; and r = 0.39, p0.005, respectively).Heterogeneity of regional LV systolic function detected by SR imaging is in part attributable to heterogeneity of LVH and may be linked to impaired global LV relaxation in HCM.
- Subjects :
- Male
endocrine system
medicine.medical_specialty
Heart disease
Systole
Systolic function
Doppler imaging
Ventricular Dysfunction, Left
Internal medicine
Ventricular relaxation
medicine
Humans
cardiovascular diseases
LV hypertrophy
business.industry
Hypertrophic cardiomyopathy
Cardiomyopathy, Hypertrophic
Middle Aged
University hospital
medicine.disease
Echocardiography, Doppler
Circulatory system
Cardiology
Female
Cardiology and Cardiovascular Medicine
business
Subjects
Details
- ISSN :
- 1468201X
- Volume :
- 94
- Issue :
- 10
- Database :
- OpenAIRE
- Journal :
- Heart (British Cardiac Society)
- Accession number :
- edsair.doi.dedup.....7303ecfebe5a96305d6437ffa5268cab