Cardiovascular disease in Down syndrome.

Area of Science:

• Cardiology
• Genetics
• Pediatrics

Background:

• Down syndrome (trisomy 21) is associated with a high prevalence of congenital heart defects (CHD).
• Improved understanding of cardiac anomalies and surgical outcomes has increased life expectancy for individuals with Down syndrome.
• Recent genetic insights clarify pathogenetic mechanisms of cardiac defects in trisomy 21.

Purpose of the Study:

• To review advances in knowledge of cardiac defects and the cardiovascular system in individuals with Down syndrome (trisomy 21).
• To highlight recent findings regarding the prevalence, genetics, and clinical manifestations of cardiovascular issues in Down syndrome.

Main Methods:

• This is a review article synthesizing current research on cardiac defects and cardiovascular health in Down syndrome.
• Analysis of recent studies on genetic insights, prevalence, and clinical outcomes related to trisomy 21 and cardiovascular conditions.

Main Results:

• Increased prevalence of cardiac malformations, particularly simple defects, noted in neonates with Down syndrome.
• Subclinical morphologic anomalies are present in children with trisomy 21, even without overt cardiac defects.
• Improved surgical outcomes but specific treatments are needed for pulmonary hypertension; reduced sympathetic response and protection from atherosclerosis observed.

Conclusions:

• Continued clinical and basic research is crucial for further improving survival and quality of life for individuals with Down syndrome.
• Understanding ethnic and sex differences in CHD prevalence is important for targeted interventions.
• Long-term cardiovascular health management in Down syndrome requires ongoing research and dedicated care.