Key result
Right carotid baroreflex loading was as efficient as bilateral stimulation and more effective than left carotid suction in modulating R-R and systolic arterial pressure variability.
Why the study?
Does unilateral versus bilateral carotid baroreceptor stimulation differentially affect heart rate, arterial pressure, and muscle sympathetic nerve activity variability in healthy volunteers?
Does unilateral versus bilateral carotid baroreceptor stimulation differentially affect heart rate, arterial pressure, and muscle sympathetic nerve activity variability in healthy volunteers?
Right carotid baroreflex stimulation is more effective than left-sided stimulation in modulating heart rate and blood pressure variability, though sympathetic nerve activity responses remain symmetrical.
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Right-sided preference may guide experimental protocols in healthy subjects; extends lateralization data but leaves open translation to patients with hypertension or HF.
Furlan et al. (2003) studied Healthy (n=12). Right and combined right and left carotid baroreceptor stimulation (neck suction) vs. Left-sided carotid baroreceptor stimulation was evaluated on Changes in the 0.1-Hz oscillatory component of the R-R interval, systolic arterial pressure (SAP), and muscle sympathetic nerve activity (MSNA) variability. Right carotid baroreflex loading was as efficient as bilateral stimulation and more effective than left carotid suction in modulating R-R and systolic arterial pressure variability.
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