Disorders of Fluid, Electrolytes, Acid Base, and Blood Flashcards Preview

Pathophysiology > Disorders of Fluid, Electrolytes, Acid Base, and Blood > Flashcards

Flashcards in Disorders of Fluid, Electrolytes, Acid Base, and Blood Deck (131)
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1

This is the mechanical pressure exerted on one object by another

Fluid Pressure

2

Pressure caused by the weight of fluid, and is exerted in the weight of a column

Hydrostatic pressure

3

Where is hydrostatic pressure the largest?

The legs and feet

4

What is a clinical example of failed hydrostatic pressure

Varicose veins

5

This is the increment of pressure that is created by the resistance to the flow of a fluid in a closed system

Hydrodynamic pressure

6

What is an example of hydrodynamic pressure?

The cardiovascular system

7

This is the hydrodynamic pressure of moving blood

Blood pressure

8

What is the equation of blood pressure?

Blood pressure= blood flow rate (cardiac output) * vascular resistance

9

What % of water is intracellular?

2/3

10

For fluid to flow, there must be ______

Pressure acting on that fluid

11

Where is the pressure highest in the heart?

Left ventricle

12

Where is the pressure lowest in the heart?

Right atrium

13

Where is the area of the greatest resistance?

The arterioles (provided by the smooth muscle tone)

14

The pressure gradient is driven by the ______ work for the left ventricle myocardial muscle

Mechanical

15

What determines the flow into the arterial tree?

Cardiac output

16

What determines flow out of the arterial tree?

Vascular resistance

17

What is the equation for cardiac output?

CO= HR * SV

18

What influences cardiac output?

Blood volume

19

The lesser the blood volume, the ____ cardiac output and the _____ blood pressure

-Lesser cardiac output
-Lesser the Blood pressure

20

What determines vascular resistance?

The collective size of the small peripheral arterioles

21

The arterioles _____ to increase out flow

Constrict

22

The arterioles _____ to decrease out flow

Dilate

23

Where are the arterial blood pressures the highest?

The aorta

24

What is the relative arterial blood pressure in the upper arm?

100 mmHg

25

What is the average blood pressure when it reenters the heart near the aorta?

0 mmHg

26

What triggers the RAA system?

Low Blood pressure

27

What secretes renin

Kidneys

28

Why is renin secreted?

To increase BP

29

What does renin do?

Acts on angiotensinogen and converts it to angiotensin 1

30

What makes angiotensinogen?

Liver