Chapter 20- Shock

Question 1

Circulatory Failure (shock)

Answer 1

acute failure of the circulatory system to supply the peripheral tissues and organs of the body with adequate blood supply. Resulting in cellular hypoxia

Question 2

Circulatory shock is not a __ but a __

Answer 2

not a disease; but a syndrome of a disease

Question 3

Shock can be classified by the:

Answer 3

• cause
• primary pathophysiological derangement
• clinical manifestations

Question 4

all types of shock are:

Answer 4

• inadequate peripheral tissue perfusion
• alteration in cellular metabolism and function
• impaired organ perfusions

Question 5

Cellular response to shock:

Answer 5

BC of lack of O2, cells convert from aerobic to anaerobic respiration

• ^ lactic acid build up: stop cellular function and they swell
• mitochondria become depressed and cell ruptures: releasing enzymes that cause further cellular damage
• Cell dies: release of intracellular contents into extracellular space: more damage

Question 6

Hypovolemic Shock

Answer 6

• loss of 15% or more of circulating blood volume

- loss of whole blood plasma, extracellular fluid, or excessive dehydration

Question 7

hypovolemic shock causes:

Answer 7

internal hemorrhage, third space loss, traumatic injury, dehydration.

Question 8

Early symptoms of hypovolemic shock

Answer 8

• tachycardia
• peripheral vasoconstriction
• slight increase or decrease in BP
• THIRSTY, PALE, CLAMMY SKIN, OLIGURIA, mental status change

Question 9

diagnosis of hypovolemic shock:

Answer 9

• physical symptoms
• blood work
• urine output (oliguria- decrease urine output)

Question 10

Treatment of Hypovolemic shock

Answer 10

• stop underlying cause of bleeding
• O2
• Replace fluids
• Medication (only vasodilators, NO vasoconstrictors)

Question 11

In contrast to other shock states, the heart rate in __________ shock often is slower than normal, and the skin is dry and warm. These findings are considered the cardinal signs of this type of shock.

Answer 11

neurogenic shock