Cardiac function in mild primary hyperparathyroidism and the outcome after parathyroidectomy

Area of Science:

• Cardiology
• Endocrinology
• Medical Diagnostics

Background:

• Primary hyperparathyroidism (PHPT) is linked to cardiovascular issues, but its impact on cardiac structure and function in mild, asymptomatic cases remains unclear.
• Assessing cardiovascular abnormalities in mild PHPT is crucial for understanding disease progression and management.

Purpose of the Study:

• To compare cardiac structure and function in patients with mild PHPT and healthy controls using sensitive echocardiographic methods.
• To evaluate the changes in cardiac parameters after parathyroidectomy (PTX) in PHPT patients.

Main Methods:

• A prospective case-control study involving 51 PHPT patients (without cardiovascular risk factors/diseases) and 51 matched healthy controls.
• Echocardiography and Doppler tissue imaging (DTI) were used to assess cardiac structure, systolic, and diastolic function.
• Blood pressure (BP) and heart rate were measured in all participants.

Main Results:

• No significant differences in systolic/diastolic function or cardiac morphology were found between PHPT patients and controls.
• Post-PTX, regional peak systolic myocardial velocities (S') decreased significantly at all measured sites.
• Systolic BP was higher in PHPT patients at baseline; however, both systolic and diastolic BP decreased after PTX.

Conclusions:

• Patients with mild PHPT and no cardiovascular risk factors exhibit normal global cardiac function and morphology.
• Post-PTX, marginal reductions in BP and systolic velocities were observed, bringing them closer to control group levels.
• Further research is needed to clarify the clinical and prognostic implications of these post-PTX changes in myocardial velocity.