Physiology of Shock Flashcards
(45 cards)
Define Shock
Inadequate organ perfusion leading to inadequate oxygen delivery to tissues and eventually organ failure
Shock is caused by a problem with what?
Heart
Blood vessels
Flow of blood
Name the different types of shock
Hypovolaemic Cardiogenic Septic Anaphylactic Neurogenic
What is distributive shock?
Sufficent fluid but in the wrong place
Distributive shock is an umbrella term for what types of shock?
Septic
Anaphylactic
Neurogenic
What causes hypovolaemic shock?
Blood loss/body fluid loss
What happens to cardiac output in hypovolaemic shock?
Reduced
What happens to BP in hypovolaemic shock?
Maintained by compensation, reduced in late stage
What happens to HR in hypovolaemic shock?
Tachycardia
What happens to the skin in hypovolaemic shock?
Cool + pale
What is the key issue in hypovolaemic shock?
Loss of intravascular volume
What is the treatment for hypovolaemic shock?
Fluid/blood replacement
What is the only type of shock to cause bradycardia?
Neurogenic shock
What things can cause cardiogenic shock?
MI
PE
Tamponade etc
What happens to cardiac output in cardiogenic shock?
Reduced
What happpens to BP in cardiogenic shock?
Reduced
What happens to HR in cardiogenic shock?
Tachycardia
What happens to the patient temp in cardiogenic shock?
normal
What happens to patient skin in cardiogenic shock?
Swollen + oedematous
What is the key issue in cardiogenic shock?
Heart failure
What is the management for cardiogenic shock?
Careful fluid management
Inotropes (dobutamine)
Vasopressor (noradrenaline)
In what type of shock does a patient experience pyrexia?
Septic shock
In what type of shock does a patient experience an unregulated temp?
Neurogenic
What is the cause of septic shock?
Gram +ve Bacterial infection usually
