12 Shock Flashcards
Perfusion Triangle
Heart i.e. pump function
Blood i.e. content function
Blood vessels i.e. container function
Causes of pump failure
heart attack, trauma, obstructive causes like PE
Causes of low fluid volume
trauma to vessels or tissue, fluid loss from GI tract e.g. vomiting
Causes of poor vessel function
infection, narcotic drug overdose, spinal cord injury, anaphalaxis
Types of shock in pump failure
cardiogenic and obstructive shock
Types of obstructive shock
tension pneumothorax, cardiac tamponade, PE
Types of distributive shock from poor vessel function
septic, neurogenic, anaphylactic, psychogenic shock
Types of hypovolemic shock from low fluid volume
hemorrhagic and non-hemorrhagic shock
Signs and Symptoms of compensated shock
agitation, restlessness, ALOC, weak or absent pulse, clammy skin, shallow and rapid breathing, tachycardia, delayed cap refill
Signs and Symptoms of decompensated shock
falling BP, labored and irregular breathing, cyanosis, dilated pupils, bradycardia
afterload
force or resistance against which the heart pumps
aneurysm
swelling or enlargement of a part of an artery 2/2 weakening of arterial wall
cardiac tamponade
compression of the heart s/p build up of blood or other fluid in pericardial sac, leading to decreased cardiac output
cardiogenic shock
state where not enough oxygen is delivered to the tissues of they body 2/2 low output of blood from heart that can lead to MI
distributive shock
occurs when there is widespread dilation of the small arterioles, small venules, or both
neurogenic shock
circulatory failure caused by paralysis of the nerves that control size of blood vessels leading to widespread dilation. usually seen in spinal cord injuries
pericardial effusion
collection of fluid between the pericardial sac and myocardium
preload
pre contraction pressure in the heart as the volume of blood builds up
psychogenic shock
caused by sudden, temporary reduction in blood supply to the brain that causes fainting
pulse pressure
difference between the systolic and diastolic pressure
sensitization
developing a sensitivity to a substance that caused no allergic reaction
