Cervical Hyperextension Causes Acute Cerebral Congestion in Non-Anesthetized Healthy Adults: An Observational Self-Controlled Design Study.

Medicina (Kaunas) · 2025 · PMC12566163 · PMID 41155778

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did not reach statistical significanceno p-value reported

They concluded that head flexion and extension applied in addition to 30° head elevation caused a decrease in cerebral blood flow, but did not reach statistical significance [ 18 ].

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