Key result
HFrEF patients display reduced resting cerebral perfusion but increased perfusion during PECO versus controls.
Why the study?
Does muscle metaboreflex activation via postexercise circulatory occlusion affect cerebral perfusion differently in patients with HFrEF compared to controls?
Observational
Does muscle metaboreflex activation via postexercise circulatory occlusion affect cerebral perfusion differently in patients with HFrEF compared to controls?
HFrEF patients exhibit altered cerebral perfusion at rest and during sympathoexcitation that occurs independently of systemic hemodynamics.
Altered cerebral perfusion responses in HFrEF are hypothesis-generating; leaves open whether metaboreflex modulation affects outcomes or warrants intervention.
Compared with controls, patients with heart failure with reduced ejection fraction (HFrEF) displayed reduced indices of cerebral perfusion at rest and increases in perfusion in response to postexercise circulatory occlusion (PECO, method to isolate muscle metaboreflex activation). This occurred despite similar cardiac output and blood pressure values between groups. Thus, lower resting indices of cerebral perfusion and increased perfusion during sympathoexcitation in HFrEF may occur independently from differences in systemic hemodynamics.
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Jurrissen et al. (2025) conducted an observational in Heart failure with reduced ejection fraction (HFrEF). Postexercise circulatory occlusion (PECO) vs. Controls was evaluated on Indices of cerebral perfusion at rest and in response to PECO. Patients with HFrEF displayed reduced resting cerebral perfusion and increased perfusion during postexercise circulatory occlusion compared with controls, independent of systemic hemodynamics.
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