Q:

In ambient air

Anwaar
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2022-09-10
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 In ambient air the average half-life of HbCO is 4 6 hr , while after administration of 100% oxygen the half-life is

  1. 0.5-1 hr
  2. 1-1.5 hr
  3. 1.5-2 hr
  4. 2-3 hr
  5. 3-4 hr
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Anwaar
2022-09-10
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(B). in ambient air, the average half-life of HbCO is 4-6 hr. This is dramatically reducedto 60-90 min by providing100% oxygen at normal atmospheric pressures via a non-rebreather facemask. Severely poisoned patients might benefit from hyperbaric oxygen(HBO),which decreases the half-life of HbCO to 20-30 minutes.

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