生物常量

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Arterial compliance / stiffness

How much arterial walls stretch when pressure and volume change.

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這是什麼

Arterial compliance describes how much arterial volume changes for a given pressure change; lower compliance means a stiffer arterial wall.[1]

為什麼重要

Stiffer arteries absorb less of each heartbeat's volume pulse, so pressure waves and pulse pressure can rise more easily.[2,1]

發生異常的根本原因

  • Core relation: A softer arterial wall expands and stores part of the heartbeat's energy; a harder wall expands less, so the same stroke volume becomes a larger pressure rise.[1,2]

它會影響哪些判斷

  • It is a mechanism node for pulse pressure, systolic pressure, aging-related vessel context, and vascular load.[2]

解讀陷阱

  • Routine blood pressure does not directly measure arterial stiffness.[2]

相關病症

高血壓與心臟負荷