RAAS System

Question 1

What happens with RAAS activation

Question 2

When is activation of the RAAS System a bad thing? Patient population?

Answer 2

HF pts
Bbs
CcBs
Block RAAS System

Question 3

Autoregulation

Alternate BP Regilation Mechanism
Other than RAAS

Answer 3

The ability of the tissues to control their own blood flow

Vessels dilate in response to increased O2 demand

Occlusion >70% results in loss of autoregulatuon

Question 4

Autonomic Nervous System

Alternate BP Regilation Mechanism
Other than RAAS

Answer 4

Sympathetic
-> increased HR & Vasoconstriction
Parasympathetic
-> decreases HR & Contractility

Question 5

Baroreceptors Reflex

Alternate BP Regilation Mechanism
Other than RAAS

Answer 5

Pressure sensitive cells in the Carotid Sinus & Aortic Arch communicate with CNS
- increases BP: Inhibits vaaomotoencentwr in brain. Vasodilation, Vagus drops HR
Decreases BP: stimulates vasomotor center in brain. Vasoconstricts inhibit vagus to raise HR