Impact of Heart Rate on Central Hemodynamics and Stroke: A Meta-Analysis of -Blocker Trials
Key result
Beta-blockers were associated with a higher risk of stroke compared to other antihypertensive drugs (OR 1.23, P<0.001), potentially due to less reduction in central systolic blood pressure.
Why the study?
Do beta-blockers reduce central hemodynamics and prevent stroke as effectively as other antihypertensive drugs in patients with hypertension?
Population
Patients with hypertension
Comparison
Beta-blockers vs Other classes of antihypertensive drugs
Design
Meta-analysis, Included studies were randomized controlled trials
Authors
Discussion
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Implication
Beta-blockers warrant caution as first-line antihypertensives; confirms inferiority for stroke prevention versus agents with superior central BP effects.
Study Design
Type
Meta-Analysis (n=754)
Structured PICO
Do beta-blockers reduce central hemodynamics and prevent stroke as effectively as other antihypertensive drugs in patients with hypertension?
P
Population
Meta-analysis of randomized controlled trials (n=754 in 9 hemodynamic trials, plus 5 outcome trials) comparing beta-blockers with other antihypertensive drugs.
I
Intervention
Beta-blockers
C
Comparator
Other classes of antihypertensive drugs (including ACE inhibitors and angiotensin receptor blockers)
O
Outcome
Central systolic blood pressure (cSBP), augmentation index (cAI), and strokesurrogate
Main Result
Odds Ratio: 1.23
p-value: p=<0.001
Beta-blockers are less effective than other antihypertensives at reducing central systolic blood pressure and augmentation index, which may mechanistically explain their lower efficacy in preventing stroke.
Cite This Study
Ding et al. (2012) conducted a meta-analysis in Hypertension (n=754). Beta-blockers vs. Other classes of antihypertensive drugs was evaluated on Stroke (OR 1.23, p=<0.001). Beta-blockers were associated with a higher risk of stroke compared to other antihypertensive drugs (OR 1.23, P<0.001), potentially due to less reduction in central systolic blood pressure.