BleeMACS: rationale and design of the study

Area of Science:

• Cardiology
• Clinical Research
• Public Health

Background:

• Bleeding events post-acute coronary syndrome (ACS) negatively impact patient prognosis.
• Current risk scores for bleeding lack accuracy and fail to predict long-term events or include patients on new antiplatelet agents.
• Percutaneous coronary intervention (PCI) is widely used in ACS management.

Purpose of the Study:

• To develop and validate a risk score for predicting major bleeding events within one year following hospital discharge in ACS patients.
• To address limitations of existing risk scores in contemporary ACS treatment paradigms.

Main Methods:

• The BleeMACS project is a multicenter, international, retrospective registry of over 15,000 ACS patients treated with PCI.
• The primary endpoint is the incidence of major bleeding requiring hospitalization or red cell transfusion within one year.
• A multivariate competing-risks regression model will be used to develop an integer risk score.

Main Results:

• (Study ongoing, results not yet available)

Conclusions:

• The BleeMACS registry collaborative aims to create a validated risk score for major bleeding prediction.
• This score will aid in managing patients receiving contemporary therapies for acute coronary syndrome.