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Risk of bleeding with ticagrelor in elderly patients over 75 years old: A systematic review and meta-analysis
Shalan Alaamri1, Sultan Al Dalbhi2
1Cardiology Department, College of Medicine, Jeddah University, Saudi Arabia.
Insights
Elderly patients with acute coronary syndrome (ACS) face a higher bleeding risk with ticagrelor compared to clopidogrel. Clopidogrel may be a safer alternative for this population due to its lower bleeding risk.
Area of Science:
- Cardiology
- Pharmacology
- Geriatrics
Background:
- Bleeding complications are a significant concern in elderly patients diagnosed with acute coronary syndrome (ACS).
- While ticagrelor offers clinical benefits, its bleeding risk in ACS patients aged 75 years and older requires further investigation.
Purpose of the Study:
- To systematically evaluate the risk of bleeding events associated with ticagrelor compared to clopidogrel in elderly patients (≥75 years) with ACS.
Main Methods:
- A systematic literature search was performed across seven databases up to May 20, 2020.
- Eight studies, including observational studies and randomized controlled trials with 7032 patients, were analyzed.
- Risk ratios (RR) for bleeding events were calculated using a random-effects model.
Main Results:
- The pooled analysis revealed a significantly higher risk of any bleeding event with ticagrelor versus clopidogrel (RR 1.20, P=.017).
- No significant increase in major bleeding (RR 1.32, P=.15) or minor bleeding (RR 1.09, P=.64) was observed.
- No statistically significant heterogeneity was detected among the included studies (I²=0, P=.44).
Conclusions:
- Elderly ACS patients treated with ticagrelor exhibit a 20% increased risk of bleeding compared to those on clopidogrel.
- Clopidogrel presents a potentially safer alternative for elderly ACS patients due to its associated lower bleeding risk.
Background:
Bleeding is an untoward outcome in the management of elderly patients with acute coronary syndrome (ACS). Although the potent oral P2Y12 inhibitor, ticagrelor is clinically beneficial, its association with bleeding events in elderly ACS patients (≥75 years) is poorly understood.
Methods:
We conducted a systematic search of 7 databases up to May 20, 2020 to identify studies which examined the risk of bleeding (defined according to each study) among elderly ACS patients (≥75 years) receiving ticagrelor compared to clopidogrel. Summary risk ratios (RR) were estimated using the random effects model.
Results:
Eight studies consisting of 5 observational studies and 3 randomized controlled trials involving 7032 elderly patients met the eligibility criteria. The mean age of the patients was 77.8 years, and the mean follow-up duration was 12 months. Overall, the pooled RRs showed higher risk of a bleeding event with ticagrelor compared to clopidogrel (RR 1.20, 95% confidence interval [95% CI] 1.03-1.40; P = .017). No statistically significant heterogeneity was observed among the studies (Q = 6.93; P = .44; I2 = 0). Also, pooled RRs did not show a higher risk of major bleeding (RR 1.32, 95% CI 0.91-1.92; P = .15) or minor bleeding (RR 1.09, 95% CI 0.76-1.58; P = .64) when comparing the ticagrelor to the clopidogrel group.
Conclusions:
There is a 20% increased risk of a bleeding event in elderly ACS patients treated with ticagrelor compared to clopidogrel; for such patients, clopidogrel may be considered as an alternative agent to ticagrelor due to its lower risk of bleeding.
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