When educating a student on proper metered-dose inhaler (MDI) technique, which instruction is MOST important to prevent ineffective drug delivery?
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A
Inhale rapidly and deeply to ensure medication reaches the lungs
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B
Shake the inhaler, exhale fully, then inhale slowly and steadily while actuating
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C
Hold the inhaler upside down to maximize medication release
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D
Exhale immediately after actuation to distribute medication evenly