The Prevalence of Adrenal, Parathyroid and Cardiac Dysfunction in Patients with Beta Thalassemia Major

Najat E. Mahdi, Taysir S. Garadah, Zuheir Hassan, Ahmed A. Jaradat, Das S. Nagalla

1Cardiac Unit, Salmaniya Medical Complex, Ministry of Health, Manama, Kingdom of Bahrain; Department of Family and Community Medicine, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain; King Hamad University Hospital, Manama, Kingdom of Bahrain;.
Cardiac Unit, Salmaniya Medical Complex, Ministry of Health, Manama, Kingdom of Bahrain;.
Cardiac Unit, Salmaniya Medical Complex, Ministry of Health, Manama, Kingdom of Bahrain; Department of Family and Community Medicine, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain;.
Department of Family and Community Medicine, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain;.
Department of Physiology, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain..

DOI: 10.4236/ijcm.2013.47058                

Abstract

Background: Adrenal and parathyroid insufficiency are uncommon in patients with transfusion dependent Beta Thalassemia (β-TM). Further, myocardial echocardiographic abnormalities are recognized but with a variable outcomes Aim: The aim is to determine the prevalence of adrenal and parathyroid insufficiency in patient with transfusion dependent β-TM. And to assess left ventricle systolic and diastolic function using Pulsed Doppler (PD) and Tissue Doppler (DT) echocardiogram. Methods:The study was conducted on patients with β-TM (n = 99, age 15.92 ± 8.92 years) and compared with an age-matched controls (n = 98 age 15.79 ± 8.94 years). In all participants echocardiographic indices of M mode and PD and TD were performed. Blood samples were withdrawn for measuring the serum cortisol, parathyroid and Ferritin. Correlation between the level of cortisol and ferritin level was evaluated. Results: Patients with β-TM compared with controls, had significantly thicker LV septal wall index of 0.65 ± 0.26 vs 0.44 ± 0.2190, p < 0.001 and LV posterior wall of 0.65 ± 0.235 vs 0.43 ± 0.214, p < 0.001, with no significant dilation of LV cavity in systole and diastole. The systolic function of LVFE% was normal of 51.95 ± 5.5 vs 5.0 ± 5.6, p = 0.23. Furthermore patients with β-TM had higher E/A ratio (1.54 ± 0.18 vs 1.23 ± 0.17, p < 0.01) and shorter deceleration time (DT) (170.53 ± 13.3 vs 210.50 ± 19.20 m sec, p < 0.01). The ratio of transmitral E wave velocity to the tissue Doppler E wave at the basal septal mitral annulus (E/Em) was significantly higher in β-TM group (19.68 ± 2.81 vs 13.86 ± 1.41, p < 0.05). The tissue Doppler systolic wave (Sm) velocity and the early diastolic wave (Em) were significantly lower in β-TM group compared with controls with Sm, of 4.82 ± 1.2 vs 6.22 ± 2.1 cm/sec, p < 0.05 and (Em) of 3.51 ± 2.7 vs 4.12 ± 2.5 cm/sec p < 0.05, respectively). The tricuspid valve velocity was significantly higher in β-TM patients compared with controls (2.85 ± 0.56 vs 1.743 ± 0.47 m/sec, respectively, p < 0.01). The prevalence of adrenal insufficiency in patients with β-TM was 16%, hypoparathyroidism of 4.5% weak negative correlation between serum level of cortisol and the serum Ferritin. Conclusion: Patients with β-thalassemia major had a high prevalence of subclinical adrenal insufficiency of 16%, hypoparathyroidism of 4.5% with weak negative correlation between the low level of cortisol ≤160 nmol/L and high serum ferritin. Echocardiographic Pulsed Doppler showed a restrictive LV diastolic pattern suggestive of advanced diastolic dysfunction but preserved left ventricle systolic function.

Keywords

Cortisol Hormone; Beta-Thalassemia Major; Pulsed Echo Doppler; Tissue Doppler Echocardiography; Bahrain

Conflicts of Interest

The authors declare no conflicts of interest.

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