: relating to, involving, or caused by action of the vagus nerve on blood vessel dilation and heart rate
vasovagal syncope

Examples of vasovagal in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The 34-year-old most recently played for Brazilian side Sao Paulo in November, when he was admitted to hospital in November and diagnosed with vasovagal syncope. — Jessica Hopkins, New York Times, 4 Apr. 2026 When people have a vasovagal reaction during blood donation, their heart rate increases while their blood pressure drops. — Emilie Le Beau Lucchesi, Discover Magazine, 29 Aug. 2023 Increasing intravascular volume by hydrating can help prevent a vasovagal syncope event that can lead to fainting. — Korin Miller, Health.com, 15 Nov. 2021 Applied tension combats the vasovagal response by flexing large muscle groups to raise the blood pressure and pulse. — Los Angeles Times, 3 May 2021 Remember that an occasional episode of vasovagal syncope is likely not of concern, as long as you haven’t been injured in the process. — Anne R. Crecelius, The Conversation, 20 June 2019

Word History

Etymology

vaso- + vagal

First Known Use

1907, in the meaning defined above

Time Traveler
The first known use of vasovagal was in 1907

Browse Nearby Words

Cite this Entry

“Vasovagal.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vasovagal. Accessed 2 Oct. 2026.

Medical Definition

vasovagal

adjective
: of, relating to, or involving both vascular and vagal factors
a vasovagal reaction
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