[Registries of morbimortality in cardiology: methods]

Area of Science:

• Cardiology
• Epidemiology
• Health Services Research

Context:

• Clinical trials assess treatment efficacy, but real-world effectiveness requires evaluation in actual patient care scenarios.
• Acute myocardial infarction (AMI) management procedures need assessment beyond controlled trial settings.
• Hospital registries and population-based registries provide frameworks for evaluating real-world treatment effectiveness.

Purpose:

• To compare the utility of hospital registries versus population-based registries for evaluating AMI management.
• To outline the essential components and validity considerations for designing effective patient registries.
• To emphasize the importance of systematic data collection for internal and external validity in AMI research.

Summary:

• Hospital registries capture consecutive patients admitted for AMI, offering simpler, cheaper evaluation of procedures compared to clinical trials.
• Population-based registries extend this by including pre-hospital deaths, enabling incidence and mortality rate establishment.
• Both registry types systematically record patient data (co-morbidity, demographics, severity, procedures) using standard definitions for validity.

Impact:

• Effective registries enhance the external validity of findings by representing the broader patient population.
• Well-designed registries facilitate subgroup analysis (e.g., non-Q wave AMI) and comparison across studies.
• Registries support mid-term follow-up, ethical considerations, funding, and multidisciplinary collaboration in cardiovascular research.