Mortality and morbidity following a major bleed in a registry population with acute ST elevation myocardial
Shoaib Amlani1, Thanu Nadarajah, Rizwan Afzal
1Department of Medicine, McMaster University, 237 Barton Street East, Hamilton, ON L8L 2X2, Canada. amlans2@mcmaster.ca
Insights
Major bleeding in ST-elevation myocardial infarction (STEMI) patients is common and significantly increases in-hospital mortality risk, especially in those with a low TIMI STEMI risk score. New therapies are needed to reduce bleeding and associated deaths.
Area of Science:
- Cardiology
- Clinical Research
- Patient Outcomes
Background:
- Major bleeding is a known complication in acute coronary syndromes.
- Bleeding events are associated with increased risks of ischemic events and mortality.
- Understanding the bleeding-outcome relationship in ST-elevation myocardial infarction (STEMI) is crucial for patient management.
Purpose of the Study:
- To examine the association between major bleeding and in-hospital outcomes in STEMI patients.
- To identify patient subgroups at higher risk of mortality following major bleeding.
- To inform the development of safer treatment strategies for STEMI.
Main Methods:
- Retrospective analysis of 1,389 consecutive STEMI patients admitted to a tertiary center.
- Data collection included bleeding events, length of stay, and 30-day mortality.
- Statistical analysis assessed the relationship between major bleeding and mortality, including subgroup analysis by TIMI STEMI risk score.
Main Results:
- Major bleeding occurred in 10.9% of STEMI patients.
- In-hospital mortality was significantly higher in patients with major bleeding (19.7%) compared to those without (8.2%).
- The increased mortality risk associated with major bleeding was particularly pronounced in patients with a low TIMI STEMI risk score.
Conclusions:
- Major bleeding is a significant and common complication in STEMI patients treated with thrombolysis or PCI.
- Major bleeding is a powerful predictor of in-hospital death, especially in lower-risk STEMI patients.
- There is a critical need for therapies that balance treatment efficacy with bleeding risk reduction and mitigate mortality in bleeding patients.
Abstract:
Major bleeding has been associated with an increased risk of ischemic events and death in patients with acute coronary syndromes. We examined the relationship between bleeding and outcome in 1,389 consecutive patients with ST-elevation myocardial infarction (STEMI) presenting to a tertiary center between May 1, 2003 and July 10, 2007. We recorded bleeding, length of stay and death during the first 30 days after hospitalization. Major bleeding occurred in 10.9% (152/1389, 95% confidence interval [CI] 9.3-12.6%). In hospital mortality was significantly higher in patients with major bleeding compared to those without major bleeding (19.7 vs. 8.2%, odds ratio [OR] 2.8, 95% CI 1.8-4.3) and was evident in the subgroups of patients with a low TIMI STEMI risk score (7.9 vs. 1.8%, OR 4.6, 95% CI 1.2-17.0) and medium risk score (11.7 vs. 6.3%, OR 2.0, 95% CI 0.6-6.2) but not those with a high TIMI STEMI risk score (28.8 vs. 26.1%, OR 1.2, 95% CI 0.7-2.0) (P for interaction = 0.024). Our data indicate that serious bleeding is common in patients with STEMI treated with thrombolysis or PCI and is a powerful predictor of death, particularly in patients with a low TIMI risk score. Therapies that maintain efficacy while reducing bleeding and that reduce the risk of death in patients who develop bleeding are needed.
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