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ACNP Shock States- Questions and Answers
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ACNP Shock States- Questions and Answers
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ACNP Shock States- Questions andAnswers
SvO2 Decreased Correct Ans-Implies increased tissue extraction of O2; the patient has
tapped the venous reserve of O2
Causes: decreased O2 supply (decreased CO, decreased FiO2, anemia) or increased O2 demande
(Fever, shivering, increased WOB)
SvO2 Elevation Correct Ans-Implies decreased tissue extraction of oxygen; high return of O2
is often a most early indicator of patient status changes
Causes: increased O2 supply (FiO2> need), decreased O2 demand (hypothermia), or decreased
effective O2 delivery and uptake by the cells (sepsis, shit of the oxyhemoglobin curve to the left)
Shock States Correct Ans-Clinical syndrome of systemic hypotension, acidemia, and
impairment of vital organ function resulting from tissue hypoperfusion
Hypovolemic Shock Correct Ans-Results from a loss of greater than 20% of circulating blood
Causes:
Internal/External bleeding
Burns
DKA/HHNK
Severe dehydration
Labs and Diagnostics of Hypovolemic Shock Correct Ans-Decreased CO/CI
, Decreased CVP
Decreased PWCP
*Increased SVR
Decreased SvO2
Management of Hypovolemic Shock Correct Ans-Fluid resuscitation is mainstay of treatment
PRBCs when indicated by Hgb/Hct
Cardiogenic Shock Correct Ans-A loss of effective contractile function results in impaired
cardiac output, impaired O2 delivery, and reduced tissue perfusion
Causes: "acute pump failure"
Acute MI
Ventricular aneurysm
Dysrhythmia
Pericardial tamponade
Hypoxemia
Pulmonary edema
Acute valvular regurgitation
Acute VSD
Labs and diagnostics of Cardiogenic Shock Correct Ans-Decreased CO/CI
Increased CVP
Increased PWCP
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