Hyperbaric Oxygen Therapy – Flashcards
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HBOT
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use of O2 therapy at pressures greater than 1 atm 1 ATA = 760 mmhg most tx is conducted using 2-3 ATA 3*100% FiO2 = 2280mmhg
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what FiO2 does HBOT deliver?
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100% can choose different FiO2 if desired
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therapeutic principles - lung volumes
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boyles law - P1V1 = P2V2 as pressure increases gas volume decreases
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therapeutic principle - hyperoxygenation of blood and tissues
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alveolar air equation henry's law gas dissolving in liquid the higher the pressure the more dissolved O2 so you can meet metabolic demands of tissue
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contraindications
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obstructive airway disease hyperthermia middle ear barotrauma malignant disease- could worsen cancer optic neuritis sinusitis
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what is not a contraindication?
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PREGNANCY
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absolute contraindication
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pneumothorax will cause a tension pneumo
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hazards/complications
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barotrauma: ear/sinus trauma, pneumothorax, air embolism oxygen toxicity: pulmonary reactions, CNS toxic reactions, RETP - hazards of O2 therapy (o2 toxicity)
