Shock Flashcards
Define shock
Life threatening, circulatory failure, hypoxia, multiorgan failure
Clinical signs of shock
tachycardia
poor urine output
confusion/reduced GCS
cold- delayed capillary refill, mottled appearance
Two tests that are abnormal in shock
deranged LFTs
raised lactate
Equation for blood pressure?
CO X systemic vascular resistance
Equation for CO?
SV x HR
How to assess systemic arterial resistance?
peripheral pulses
delayed capillary refill times
sats probe not picking up reading due to poor perfusion
List three types of shock
obstructive
distributive
anaphylactic
cardiogenic
What is distributive shock?
severe peripheral vasodilation problem
List three causes of distributive shock
septic shock
neurogenic shock
endocrine
drug or toxin-induced shock
What is SIRS?
=systemic inflammatory response syndrome
inflammatory response in reaction to severe body insult
List two causes of SIRS
pancreatitis, burns, air/fluid/fat embolism
ROSC?= return of spontaneous cardiac output
list three haemorrhageic causes of hypovolaemic shock
UGIB/LGIB
Post-op
postpartum, vaginal haemorrhage
AAA
Ruptured tumour, abscess, fistulae,
Trauma- blunt or penetrating
List two non haemorrhagic causes of hypovolaemic shock
GI losses
burns
renal
third spacing- leaky capillaries e.g. infection, ascites, pancreatitis
List two types of cardiogenic shock= poor pump function
ischaemia
arrhythmia
mechanical- valvular defects e.g. aortic stenosis
List one type of RV after load obsturctive shock
PE
pulmonary HTN