Early changes in cardiovascular structure and function in adolescents with type 1 diabetes

Area of Science:

• Cardiology
• Pediatrics
• Endocrinology

Background:

• Type 1 diabetes (T1D) increases cardiovascular disease risk in young adults.
• Early detection of cardiovascular changes in adolescents with T1D is crucial.

Purpose of the Study:

• To assess cardiovascular structure and function in adolescents with T1D compared to healthy controls.
• To investigate the relationship between peripheral vascular function and myocardial parameters in T1D.

Main Methods:

• Compared 199 adolescents with T1D and 178 controls using echocardiography (M-mode, Doppler, strain imaging).
• Assessed endothelial function via flow-mediated dilation (FMD) and arterial stiffness via pulse wave velocity (PWV).

Main Results:

• Adolescents with T1D had increased blood pressure, carotid-femoral PWV, and endothelial dysfunction.
• Myocardial velocities (e', a') were decreased, and E/e' was increased in T1D.
• Left ventricular strain showed a shift towards circumferential shortening and away from longitudinal shortening in T1D.

Conclusions:

• Adolescents with T1D exhibit early cardiovascular changes, including altered blood pressure, vascular function, and myocardial deformation.
• These changes indicate a shift in left ventricular contraction patterns.
• Longitudinal studies are needed to identify individuals at high risk for cardiovascular disease and guide early therapeutic interventions.