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NIV (contraindications (unable to clear secretions, face surgery or trauma…
NIV
contraindications
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bleeding, nose, lung or gut
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neurologically depressed, from head injury, restrained.
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physiology
respiration
alveolar revruitment of surface area free from fluid for gas exhange increase Fi02 and reverse hypoxia
ventilation
alveolar respiration: reverse acidosis, blow off more C02 reverse hypercapnoea.
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increase by 2 every 5 mins untill response, confrim with ABG. max 15-17cmH20