Ontario Paramedic Practice Exam

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What is the dosing requirement for diphenhydramine via IM?

1 dose
25mg
equal to or over 25kg but under 50kg
Over 50kg = 50mg, 1 dose

The correct answer is: equal to or over 25kg but under 50kg

Diphenhydramine is commonly used to treat allergic reactions and anaphylaxis in the prehospital setting. The dosing requirement for diphenhydramine via IM is based on the patient's weight. In this case, the correct answer is C, which states "equal to or over 25kg but under 50kg." It is essential to dose medications like diphenhydramine based on the patient's weight to ensure the appropriate amount is administered for effective treatment and to avoid potential overdosing or underdosing. Following the weight-based dosing guidelines helps to optimize patient outcomes and safety.