Key result
Neurocardiac interactions show bidirectional links between acute brain injury and cardiac dysfunction.
Why the study?
The heart-brain relationship has transitioned to a modern, circuit-based, bi-directional framework, warranting a comprehensive synthesis of the anatomical, physiological, and clinical aspects of the heart-brain axis.
This review highlights the critical need for integrated cross-specialty diagnostic screening and holistic neurocardioprotective strategies to manage the bidirectional impacts of heart and brain pathologies.
May support integrated heart-brain screening; extends the axis framework but leaves open prospective validation of interventions.
The intricate relationship between the heart and the brain has transitioned from historical, cardio-centric theories to a modern, circuit-based, bi-directional framework known as neurocardiology. This review provides a comprehensive anatomical, physiological, and clinical synthesis of the bidirectional heart–brain axis, highlighting how disruptions in one organ systematically impact the other. Structurally, the heart–brain axis operates as a closed-loop feedback network. Vagal parasympathetic control dominates at rest, driven by an asymmetrical fiber distribution where sensory afferents actively supply interoceptive data to the brainstem. Hemodynamically, cerebral blood flow delivery is linked to cardiac output in an age-dependent fashion with the related vascular dysfunction. Clinically, brain-to-heart pathologies like acute brain injury trigger life-threatening catecholamine surges, neuroinflammation, and myocardial stunning, including Takotsubo cardiomyopathy. Conversely, heart-to-brain pathways reveal that atrial fibrillation and heart failure can independently trigger cardioembolic stroke, long-term neuroinflammation, and a profound, progressive burden of cognitive decline. The heart and brain are inexorably linked through complex structural, mechanical, and paracrine pathways. Ameliorating clinical outcomes demands integrated cross-specialty diagnostic screening, digital rhythm monitoring, and holistic neurocardioprotective therapeutic strategies.
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A 2026 study conducted a review in Neurocardiac pathophysiology. Neurocardiac interactions was evaluated. Neurocardiac interactions demonstrate a bidirectional relationship where acute brain injury triggers cardiac dysfunction and cardiovascular diseases drive cognitive decline and stroke.
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