A patient has SpO2 of 93% with cool, diaphoretic skin. Which oxygen therapy is indicated?

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Multiple Choice

A patient has SpO2 of 93% with cool, diaphoretic skin. Which oxygen therapy is indicated?

Start with the least invasive option that can raise oxygen levels to a safe range. A SpO2 of 93% with cool, diaphoretic skin suggests mild hypoxemia and possible early shock, so you want to improve oxygenation without overdoing it. A nasal cannula at 2 L/min delivers a modest FiO2 (roughly in the high 20s percent) that can raise SpO2 toward normal while keeping the patient comfortable and allowing easy monitoring and titration. If the SpO2 remains low or the patient shows signs of increased distress, you can increase flow or switch devices, but initial management with a nasal cannula is the appropriate first step. A nonrebreather mask can provide very high oxygen concentrations, but that level isn’t needed for this patient yet and it’s more cumbersome. A venturi mask at 40% delivers a fixed and relatively moderate FiO2 that may be insufficient to reach target SpO2 in this scenario. A bag-valve mask with 100% oxygen is a ventilatory support device used when the patient isn’t breathing adequately, not for a spontaneously breathing patient with mild hypoxemia.

Start with the least invasive option that can raise oxygen levels to a safe range. A SpO2 of 93% with cool, diaphoretic skin suggests mild hypoxemia and possible early shock, so you want to improve oxygenation without overdoing it. A nasal cannula at 2 L/min delivers a modest FiO2 (roughly in the high 20s percent) that can raise SpO2 toward normal while keeping the patient comfortable and allowing easy monitoring and titration. If the SpO2 remains low or the patient shows signs of increased distress, you can increase flow or switch devices, but initial management with a nasal cannula is the appropriate first step.

A nonrebreather mask can provide very high oxygen concentrations, but that level isn’t needed for this patient yet and it’s more cumbersome. A venturi mask at 40% delivers a fixed and relatively moderate FiO2 that may be insufficient to reach target SpO2 in this scenario. A bag-valve mask with 100% oxygen is a ventilatory support device used when the patient isn’t breathing adequately, not for a spontaneously breathing patient with mild hypoxemia.

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