Circumstances of death in adult congenital heart disease

Area of Science:

• Cardiology
• Public Health
• Epidemiology

Background:

• This is the first study to describe the circumstances of death in adults with congenital heart disease (CHD).
• Previous research has focused on circumstances of death for other cardiovascular diseases.

Purpose of the Study:

• To investigate the circumstances of death in a large cohort of adults with congenital heart disease (CHD).
• To identify factors influencing mortality, including regional and seasonal variations, and the location of death (in-hospital vs. out-of-hospital).

Main Methods:

• A review of medical records and information from healthcare providers was conducted.
• Data were collected from a national registry of over 8000 adults with CHD.
• Circumstances of all deaths within the cohort were analyzed.

Main Results:

• A total of 231 deaths (2.7%) occurred over 26,500 patient-years.
• The primary causes of death were progressive heart failure (26%) and sudden cardiac death (22%).
• Mortality was higher in rural regions and out-of-hospital deaths were more common in rural areas (55% vs. 32%).
• Nearly 40% of cardiovascular deaths were sudden, with 8% occurring during exercise.

Conclusions:

• Mortality in adult CHD patients exhibits significant regional and minor seasonal variations.
• Death typically occurs at rest, with approximately 10% of sudden cardiovascular deaths happening during physical activity.
• Findings underscore the importance of considering geographical and temporal factors in managing adult CHD.