The authors of April's Clinical Case Study provided us with two exclusive questions that will not appear in the published version of the Case. We'd love to hear your answers to these questions in the comments section.

1) What are the limitations of using regular bed-side pulse oximeters to monitor oxygen saturation when methemoglobinemia may be present?

2) What non-congenital health conditions place a patient at risk of drug-induced methemoglobinemia?

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