P wave

noun

ˈpē-ˌwāv How to pronounce P wave (audio)
: a deflection in an electrocardiographic tracing that represents atrial activity of the heart compare qrs complex, t wave

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PWA
P wave
Px
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“P wave.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/P%20wave. Accessed 4 Nov. 2025.

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