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12 Cards in this Set
- Front
- Back
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how does the supine position affect the respiratory system?
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decreases FRC by 25-30%
NM blockers can further reduce FRC Adverse effects may be offset by mechanical ventilation |
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what is the maximum angle armboards and arms should be in the supine position? what is the desirable angle?
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<90degrees (max)
60 degrees (optimal) |
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how should you place the patient's palms when the pt is in the supine position? why?
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palms up (supination)
relieves pressure on the ulnar nerve as it passes through the humeral notch at the elbow caveat: some providers advocate pronation, saying that supination may increase stretch on the brachial plexus |
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what nerve can be injured by the anesthetist's fingers on the patient's mandible during masking?
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facial nerve
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cardiac considerations of supine position?
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minimal effects on circulation
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cardiac considerations of prone position?
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pooling of blood in extremities
compression of abd. muscles (pt should have TEDS/SCDs) pooling can --> decr preload, decr CO, decr BP incr SVR and PVR |
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respiratory considerations of prone position?
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decreased lung compliance
increased peak airway pressures increased WOB ETT dislodgement/extubation |
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thoracic outlet syndrome is associated with what nerve? what position does this usually happen with?
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thoracic nerve (compression)
"Superman" arm position while prone |
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cardiac considerations with Trendelenburg?
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activation of baroreceptors --> decr in CO, PVR, HR, and BP
research suggests t-burg does not improve CO in hypotension and hypovolemia |
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respiratory considerations with Trendelenburg?
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decr FRC, decr TLC, decr lung compliance (r/t shift of abdominal viscera)
increased V/Q mismatching atelectasis incr likelihood of aspiration |
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Respiratory considerations with reverse t-burg?
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decr WOB
incr FRC |
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Cardiac considerations with reverse t-burg?
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decr CO, decr preload, decr BP
baroreceptor reflexes incr SNS tone, HR, PVR |
