Cushing REACTION

[iriechic14]

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Cushing reaction triad= HTN, bradycardia, respiratory depression

Can someone explain the respiratory depression? I'm not understanding the MOA of this since the main effect of the Cushing reaction is SANS-->increased BP-->reflex bradycardia...but why resp depression?

 

[DragonWell]

Cushing reaction triad= HTN, bradycardia, respiratory depression

Can someone explain the respiratory depression? I'm not understanding the MOA of this since the main effect of the Cushing reaction is SANS-->increased BP-->reflex bradycardia...but why resp depression?

According to google - "The irregular respirations are due to reduced perfusion of the brainstem from swelling or possible brainstem herniation."

source -
http://www.jems.com/news_and_articles/columns/SMS/Understanding_the_Cushing_Reflex.html