Asymptomatic Complete Heart Block in an Adult with Down's Syndrome and Structurally Normal Heart: A Rare Association

Area of Science:

• Genetics
• Cardiology
• Pediatrics

Background:

• Down's syndrome, caused by trisomy 21, is linked to various health issues, including cardiovascular disease.
• Congenital heart disease (CHD) affects 40%-60% of Down's syndrome individuals.
• Cardiac conduction disturbances are known in Down's syndrome, often associated with CHD.

Purpose of the Study:

• To report an unusual case of isolated complete heart block in an adult with Down's syndrome.
• To review existing literature on cardiac conduction disturbances in Down's syndrome.

Main Methods:

• Case report of an adult patient with Down's syndrome.
• Literature review on cardiac conduction defects in Down's syndrome.

Main Results:

• The patient presented with asymptomatic complete heart block.
• The patient had a structurally normal heart, making the conduction defect isolated.
• Literature review confirms the rarity of isolated conduction defects in Down's syndrome.

Conclusions:

• Isolated cardiac conduction defects, like complete heart block, are exceptionally rare in Down's syndrome patients with structurally normal hearts.
• This case highlights the importance of considering rare cardiac manifestations in Down's syndrome.
• Further research into cardiac conduction abnormalities in Down's syndrome is warranted.