what is shock
types of shock
cardiogenic
hypovolemic
distributive: neurogenic, septic, anaphylactic
cardiogenic
Failure of the heart to pump effectively due to a cardiac factor
hypovolemic
A decrease in intravascular volume
distributive
Widespread vasodilation and increased capillary permeability
stages of shock
compensatory
progressive
refractory
compensatory
Measures to increase cardiac output to restore tissue perfusion and oxygenation
progressive
Compensatory mechanisms fail
- bp drops, need 02 and fluid
refractory
Irreversible shock and total body failure
- organ failure
- hard to survive
- very low bp
expected findings of shock
Chest pain
Lethargy
Somnolence
Restlessness
Anxiousness
Dyspnea
Diaphoresis
Thirst
Muscle weakness
Nausea
Constipation
*loc worse in progressive stage not compensatory
cardiogenic shock cause
Caused by cardiac pump failure due to a direct cardiac cause:
- MI (most common)
- Heart failure
- Cardiomyopathy
- Dysrhythmias
- Heart valve rupture or stenosis
cardiogenic shock and fluid
DO NOT TREAT WITH FLUID
s/s of cardiogenic shock
tachypnea
sob
tachycardia
loss of loc
syncope
weak thready pulse
hypertensive
diaphoretic
pale
cold
cyanotic
urine output decreases
hypovolemic shock
A decrease in intravascular volume of at least 15%-30%
Excessive fluid loss:
areas to loose excessive fluid loss
Diuresis
Vomiting
Diarrhea
Blood loss
- Surgery
- Trauma
- Gynecologic
- Burns
- DKA
s/s of hypovolemic shock
thready pulse
letharguc
low bp
urine decreases
specific gravity increases
distributive shock 3 types
neurogenic
septic
anaphylactic shock
nurogenic shock and cause
Loss of sympathetic tone causing massive vasodilation:
- Head trauma
- Spinal cord injury
- Epidural anesthesia
neurogenic shock s/s
bp low
bladder full
tachkycardia
needs a lot of urine
septic shock
Exotoxins and other mediators causing massive vasodilation:
septic shock nursing care
evidence of infection sepsis
Localized redness
Swelling
Drainage
Fever (hallmark)
Urinary frequency and burning
anaphylactic shock and cause
: Allergen exposure that results in an antigen-antibody reaction causing massive vasodilation
- Antibiotics
- Foods (peanuts, tree nuts)
- Latex
- Bee stings
anaphylactic shock nursing care