Shock Flashcards
Define “Shock”.
A clinical state in which thee delivery of oxygenated blood to the bodys tissue is not adequate to meet metabolic demand.
What are the 5 types of shock?
- Hypovolaemic
- Dissassociative
- Distributive
- Obstructive
- Cardiogenic
Define “hypovolaeic shock”.
Shock due to the acute loss of circulating blood volume.
What fraction of the blood volume is the body able to loose without showing symptoms?
1/5 or 15%
What would you expect to see in a patient with Class 1 hypovolaemic shock?
- PT is able to cope,
- No signs of obvious clinical decline
What is the rough % blood loss in a Pt presenting with Class 2 Hypovaemic shock?
15-30%
What signs and symptoms would you expec to find in a Pt with Class 2 hypovolaemic shock?
- Peripheral shut down
- Tachypneoia
- Tachycardia
What is the estimated blood loss in a PT in the de compensation stage of hypovolaemic shock?
30-40%
At what point does hypovolaemic shock become unmanageable pre-hospitaly?
Stage 3 onwards
Define “Cardiogenic Shock”.
When the heart has an inability to be able to pump blood around the body, leading to a reduced delivery of oxygenated blood.
What are the common causes of cardiogenic shock?
- MI
- Acute Heart failure
- Arrhythmia
Define “Distributive Shock”.
Widespread dilation of the peripheral blood vessels, leading to reduced uptake of oxygen at the tissues.
What are the common causes of distributive shock?
- Anaphylaxis
- Sepsis
- Nervous systems related cause
Define “Cardiogenic Shock”.
An inability for the heart to be able to pump blood around the body.
