Physio Block 3

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What drug decreases preload?

Nitroglycerin
What drug decreases afterload?

Hydralazine
Cardiac output equals what?

Stroke volume
The largest blood volume in the CVS is found where?
- 1.venous side
- 2.pulmonary circulation
Blood flow is equal to what?

difference in pressure/ resistance
What is the prime determinant of viscosity?

hematocrit
What lowers hematocrit?

anemia
What is polycythemia?

Increase in RBC #
Resistance in proportional to what?

viscosity x length of bv/r^4
What are the 2 type of flow in the system?
- Laminar
- Turbulent
Which flow, laminar or turbulent produces more resistance?

Turbulent
Which flow produces murmurs?

turbulent
Which is a layered flow?

Laminar
Which is a non layered flow?

turbulent
Reynolds number measure what?

turbulent blood flow
Reynolds number is proportional to what?

diameter x velocity x density/ viscosity
Which artery would have a greater pulse pressure, a compliant one or a stiff one?

stiff one
What is the most compliant artery in the system?

the Aorta
Mean arterial pressure is equal to what?
- 1. diastolic pressure + 1/3 pulse pressure
- 2. 2/3 diastolic pressure + 1/3 systolic pressure
- 3.CO x TPR
What function does angiotensin II have?

vasoconstriction
What is the differential between Wilsons and Menke?
- Wilson--- high copper
- Menke--low copper
- both have low ceruloplasmin
Williams syndrome is caused by?

decreased elastin
What disease is characterized by elfie facies?

Williams
The left heart's cardiac output is equal to what?

Right heart's cardiac output
Beta adrenergic receptors are found where?
What do they mediate?
What do they bind?
- on arterioles
- vasodilation
- epinephrine

Author

pszurnicki

69402

Card Set

Physio Block 3

Description

Physio Block 3

Updated

2011-03-04T02:39:11Z

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