1. What is the equation to calculate MAP?

NUR 254 Shock 1

• What is the equation to calculate MAP?

Answer

• What is MAP?

Answer Average pressure during entire cardiac cycle

• What is stroke volume?

Answer How much blood comes out with each beat of the ventricle

• What is cardiac output?

Answer How much blood is pumped per minute

• (T/F) Shock is a disease resulting from a decrease in blood flow.

Answer False (it's a syndrome)

• What's marks stage 1 compensentory shock?

Answer

• MAP drop 10-15

• Tachycardia
• Tachypnea
• Anxiety
• Urinary output is a little less
• Patient is a little pale 1 / 2

• What marks stage 2 intermediate shock?

Answer

• MAP drop >20

• Vasoconstriction ’ cellular ischemia ’ anaerobic metabolism ’ lactic acid & ATP ’ Na/K pump

fails ’ K exits cells and Na retained causing cell rupture ’ fluid shift to interstitial space

• Patient becomes acidotic

• What are clinical manifestations of metabolic acidosis?

Answer

• Weakness

• Fatigue
• HA
• Malaise
• Changes in LOC
• Warm flushed skin
• Kussmaul respirations
• Cardiac dysrhythmias

• What are clinical manifestations of metabolic alkalosis?

Answer

• Numbness

• Tingling (mouth, fingers, toes)
• Trousseaus sign (blood pressure cuff on arm squeezes and hand curls)
• Muscle spasms
• Depressed respirations

• What are symptoms of stage 2 intermediate shock?

Answer

• Weak, rapid HR

• Change in LOC
• Brain and heart become hypoxic
• Hyperkalemia
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