Which of the following is true regarding EMLA cream?

Options

1. EMLA contains ropivacaine and lignocaine
2. EMLA can lead to methemoglobinemia
3. EMLA contains 5% lignocaine
4. EMLA acts within 15 minutes

Correct Answer

EMLA can lead to methemoglobinemia

Explanation

EMLA (Eutectic Mixture of Local Anesthetics) contains lidocaine and prilocaine. Prilocaine can cause methemoglobinemia, especially with excessive doses or prolonged application. EMLA typically requires 60 minutes for adequate anesthesia and contains 2.5% lidocaine and 2.5% prilocaine.

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