Shock

Question 1

shock results in…

Answer 1

hypoperfusion and hypotension (acute onset)

Question 2

types of circulatory shock

Answer 2

• cardiogenic

- hypovolemic

Question 3

circulatory shock

Answer 3

acute failure of the circulatory system to supply the tissues and organs of the body w/ an adequate blood supply.
- results in cellular hypoxia, hypotension, and hypoperfusion

Question 4

cardiogenic shock

Answer 4

myocardial damage, sustained arrhythmias, acute valve damage, ventricular septal defect, cardiac Sx
- an alteration in cardiac Fx

Question 5

hypovolemic shock

Answer 5

• loss of whole blood, plasma or ECF (dec in blood vol)

- over 20% of blood or plasma volume decrease causing inadequate filling of blood vessels and dec CO

Question 6

external hypovolemic shock

Answer 6

• loss of whole blood (ex. hemorrhage)
• loss of plasma (ex. severe burns)
• loss of extracellular fluid (ex. severe dehydration)

Question 7

internal hypovolemic shock

Answer 7

• internal hemorrhage

- third space losses (when ECF shifts from vessels into IS space)

Question 8

mnfts of shock

Answer 8

• impaired perf of body tissue = cyanosis, low O2 sats, low BP
• body’s attempt to maintain perf = kidneys retain H20, activate sympathetic NS to inc HR, inc RR

Question 9

anaphylactic shock

Answer 9

• systemic hypersensitivity d/t severe allergic rxn
• dilation of blood vessels and inc cap permb = dec TPR –> blood cannot be pumped effectively & fluid leaks into IS space out of vessels, resulting in dec blood vol
• hypoperfusion inevitable (less blood to pump around, more difficulty pumping it)
• results in circulatory shock
• bronchospasm
• type I hypersensitivity

Question 10

septic shock

Answer 10

• not type I hypersensitivity
• d/t infection (injury and inflm are no longer localized)
• vasodilatory mediators dilate blood vessels (hypoperfusion and hypotension)
• systemic response = systemic inflm
• leads to multi-organ dysFx/failure