vasovagal reaction

Medical term Routine Blood Collections

Reflex slowing of the heart and drop in blood pressure: pale, sweaty, nauseated or dizzy, sometimes fainting, during or after a draw.

Sources

• Analysis of vasovagal syncope in the blood collection room in patients undergoing phlebotomy. Sci Rep 2020 (PMC7578787) · PubMed Central, National Library of Medicine
• WHO Guidelines on Drawing Blood: Best Practices in Phlebotomy (2010); official WHO IRIS PDF, also published as NCBI Bookshelf NBK138650 · World Health Organization

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