Atunomic Function Test Part 2 Flashcards by Menna Waleed | Brainscape

Q

Phase II (continuous strain):

A

ABP decrease

Due to elevated intrathoracic &
abdominal pressure
impedes VR

Heart rate begins to increase

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Q

Phase III (release):

A

ABP decrease further

Due to sudden ↓ in
intrathoracic
pressure

Heart rate Sustained ↑

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Q

Phase IV (recovery):

A

Abp overshoot hypertension
Due to increased bro and co
Heart rate is reflex bradycardia

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Q

autonomic dysfunction

A

during maintained forced expiration: there is progressive ↓ in ABP progressively with no ↑in HR

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Q

autonomic dysfunction

A

During phase IV: no blood pressure “overshoot” , only a gradual recovery with no reflex bradycardia

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