The Claim

In adults with high cardiovascular risk, targeting systolic blood pressure below 120 mm Hg compared to targeting below 140 mm Hg increases the risk of syncope by 200%, with an incidence of 0.4% versus 0.1% (hazard ratio 3.00, 95% CI 1.35–6.68).

Source: Lowering systolic blood pressure to less than 120 mm Hg versus less than 140 mm Hg in patients with high cardiovascular risk with and without diabetes or previous stroke: an open-label, blinded-outcome, randomised trial.

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
68score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Cause and effect
1 study reviewed
In plain English

In adults at high risk for heart disease, lowering systolic blood pressure to below 120 mm Hg instead of below 140 mm Hg results in a higher rate of fainting episodes, with 0.4% of people fainting compared to 0.1%.

See the scientific wording

In adults with high cardiovascular risk, targeting systolic blood pressure below 120 mm Hg increases the risk of syncope by 200% compared to targeting below 140 mm Hg, with an incidence of 0.4% versus 0.1% (hazard ratio 3.00, 95% CI 1.35–6.68), indicating a clinically relevant trade-off in safety.

Why this might work

When blood pressure drops too low, the brain gets less blood flow, which triggers a reflex that slows the heart and widens blood vessels, causing a sudden drop in blood pressure and loss of consciousness.

Supported mechanismbased on 1 study

What the research says

1 study

  1. Study: Lowering systolic blood pressure to less than 120 mm Hg versus less than 140 mm Hg in patients with high cardiovascular risk with and without diabetes or previous stroke: an open-label, blinded-outcome, randomised trial.

    For people at high risk of heart problems, pushing blood pressure lower than 120 really does make fainting about three times more common than keeping it under 140 — and the study proved it with real patient data.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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