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Terms in this set (31)
acute, widespread process of impaired tissue perfusion
imbalance between cellular oxygen supply
all body organs are affected by shock and either work harder to adapt and compensate for reduced perfusion or fail to function secondary to hypoxia
DECREASED TISSUE PERFFUSION
What do all types of shock involve?
ineffective tissue perfusion and acute circulatory failure
What are the 4 broad stages of shock?
Describe the initial phase of shock
-cardiac out decreased = decreased tissue perfusion
-MAP decreased 10 mmHg from baseline
Describe the compensatory phase of shock
-the body naturally attempts to maintain CO, BP, and perfusion
-MAP decreased 10-15 mmH from baseline
-decreased pulse pressure
Describe the progressive phase of shock
-the body fails to meet tissue needs and compensation is ineffective
-MAP is decreased 20 mmHg from baseline
-weak rapid pulse
-sensory neural changes
Describe the refractory phase of shock
at this point, the body in the shock state becomes unresponsive to interventions and therapy and the syndrome is considered irreversible (excessive cell/organ damage, multiple system organ failure, decreased pH)
When is a pt that is in shock considered to be in multiple organ dysfunction syndrome (MODS)?
as shock progresses and organ systems (2 or more) begin to fail
What are the overall consequences of shock?
all body organs are affected by shock and either working harder to adapt and compensate for reduced perfusion or fail to function secondary to hypoxia
What are the cardiovascular consequences of shock?
What are the neurologic consequences of shock?
-sympathetic nervous system dysfunction
-cardiac and respiratory depression
What are the pulmonary consequences of shock?
acute lung failure
What are the renal consequences of shock?
What are the hematologic consequences of shock?
disseminated intravascular coagulation
What are the GI consequences of shock?
GI tract failure
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