II. Partial Rebreathing Mask with reservoir

  1. Delivers 35-60% Oxygen at 6-10 L/min flow rate
    1. First third of exhaled gases mix with reservoir
    2. Exhaled gases from upper airway are oxygen rich

III. Venturi Mask

  1. Allows provider to dial in oxygen concentration
  2. Delivers 25-60% oxygen at 4-8 L/min flow rate

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