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Published on: May 21, 2017
Increased aortic root diameters in patients with acromegaly
Agatha A van der Klaauw1, Jeroen J Bax, Johannes W A Smit
1Departments of Endocrinology, C4-R, Leiden University Medical Center, PO Box 9600, 2300 RC Leiden, The Netherlands. a.a.van_der_klaauw@lumc.nl
Insights
Acromegaly, a condition causing excess growth hormone, is linked to enlarged aortic root diameters in patients. This study found increased aortic dimensions in acromegaly patients compared to healthy individuals.
Area of Science:
- Cardiology
- Endocrinology
- Medical Imaging
Background:
- Acromegalic cardiomyopathy presents with arrhythmias, valvular issues, and left ventricular hypertrophy.
- The impact of acromegaly on the aortic root remains largely uncharacterized.
Purpose of the Study:
- To investigate whether acromegaly affects aortic root dimensions.
- To compare aortic root measurements in acromegaly patients with healthy controls and assess changes over time.
Main Methods:
- Prospective echocardiographic assessment of aortic root diameters in 37 acromegaly patients (active and controlled disease) over 1.9 years.
- Comparison of baseline aortic root dimensions with healthy controls.
- Analysis of aortic root diameter changes during the follow-up period.
Main Results:
- Patients with acromegaly exhibited increased aortic root diameters at the sino-tubular junction and ascending aorta compared to controls.
- Aortic root diameters at the annulus and sinotubular junction showed increases during follow-up.
- Baseline aortic root dimensions were not correlated with disease duration, activity, or blood pressure.
Conclusions:
- Aortic root diameters are significantly increased in patients with acromegaly.
- The aortic root, particularly the sinotubular junction, demonstrates progressive enlargement in acromegaly patients.
Objective:
The clinical manifestations of acromegalic cardiomyopathy include arrhythmias, valvular regurgitation, concentric left ventricular (LV) hypertrophy, and LV systolic and diastolic dysfunction. At present, it is unknown whether acromegaly also affects the aortic root.
Design:
Aortic root diameters were prospectively assessed in 37 acromegalic patients (18 patients with active disease and 19 with controlled disease) by conventional two-dimensional and Doppler echocardiography before, and after, an observation period of 1.9 years (range 1.5-3.0 years). Baseline parameters were compared with healthy controls.
Results:
The diameters of the aortic root at the sino-tubular junction and the ascending aorta were increased in patients with acromegaly: 30+/-4 vs 26+/-3 mm (P=0.0001) and 33+/-5 vs 30+/-4 mm (P=0.006) respectively. The diameter of the aortic root at the aortic annulus and aortic sinus were not different from controls. During follow-up, the aortic root diameters increased at the levels of the annulus and the sinotubular junction (P=0.025 and P=0.024 respectively), whereas there was no change in the diameters at the levels of the sinus and the ascending aorta during follow-up. Baseline aortic root diameters were not influenced by disease duration, current disease activity, or blood pressure. When patients with active and inactive disease were analyzed separately, only the diameter of the sinotubular junction increased in patients with inactive acromegaly during follow-up (P=0.031).
Conclusion:
Aortic root diameters are increased in patients with acromegaly compared with healthy controls.
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