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Early venous filling and controlled hyperventilation in cerebral angiography

C R Fitz, D C Harwood-Nash

    Acta Radiologica. Supplementum
    |January 1, 1976
    PubMed

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    Hyperpnea and Hyperventilation01:25

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    Hyperventilation refers to a higher-than-normal rate and depth of breathing, often associated with anxiety attacks. This excessive breathing surpasses the body's need to expel CO2, leading to a condition known as hypocapnia - an unusually low level of carbon dioxide in the blood. Hypocapnia can constrict cerebral blood vessels, reducing blood flow to the brain, which may result in dizziness or fainting. Early signs include tingling and muscle spasms in the hands and face, caused by falling...