AIR METHODS CRITICAL CARE actual EXAM

AIR METHODS CRITICAL CARE (actual / )EXAM QUESTIONS AND verified ANSWERS

What are the first tier interventions for elevated ICP?

1. patient positioning: HOB 30-45 degrees...manages venous

drainage

• Prevent compression of juglar veins
• Keep head mid line
• straight legs
• decrease stimuli
• treat pain
• normo thermia - fever is associated with worse outcomes

What are the second tier interventions for elevated ICP

• mannitol 20% osmotic diuretic

-0.25 to 1 gram /kg IV bolus Use filter!

• monitor serum osmo (adult normal 285-295) peds (275-290)
• watch for hypo kale Mia

Keep CPP > 60

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What are the Stroke care 1 hour goals?

1. NIHSS

• Ct w/o contrast

Door to needle time for ischemic embolic

What three things cause cerebral vasoconstriction?Hypertension Hypocarbia Alkalosis

Which things cause cerebral vasodilation?Hypotension Hypercarbia Acidosis

What MAP range is necessary for cerebral auto regulation to be maintained?50-150 mm Hg

What happens to cerebral blood flow when the patient is hypoxic? ( pao2 less than 50)? 2 / 4

Cerebral vasodilation occurs.

One Evidence of loss of cerebral auto regulation is

Cushings's response:

Widening pulse pressure Reflex bradycardia Decreased respiratory efforts

maintain a CPP of ______ to - ______ to optimize cerebral blood flow Greater than 65 Usually 70-90 Normal 60-100 Acceptable 50-70 mm Hg

How do you calculate MAP?Systolic BP + (2 x DBP) / 3

Which leads look at the inferior surface of the heart? ie RV infarction inferior MI?II III & aVF 3 / 4

What does an inferior MI look like on EKG?

What are some physical exams you can perform to assess systemic vascular resistance?pulse pressure variation

What are Kinematics and why do we care?Kinematics and the physics of energy transfer

What is dynamic compliance?Dynamic compliance is static compliance plus airway resistance. bronchospasm would affect dynamic compliance because it increases airway resistance.Differentiate between the factors that affect airway resistance and factors that affect expansion of the alveoli, lung, or chest wall. Dynamic compliance is affected by airway resistance factors.

Commotio cordis is a phenomenon in which:

ventricular fibrillation is induced following blunt trauma to the chest during the heart's repolarization period.

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