During quiet breathing, inspired gases will preferentially go to the more distensible upper lung units leading to an uneven distribution of gases.

 
  • 然而,這種不同順應性的肺區都處于越來(lái)越僵硬的胸廓之中,老年僵硬的胸壁加重肺彈性減弱對呼吸的影響。
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