In pharmacological terms, what does 'PO' indicate about the method of medication administration?

A. 6 mL: The directions explicitly instruct adding 6 mL of sterile water to the vial to achieve a final concentration of 500 mg/mL. This volume of diluent ensures proper reconstitution and accurate dosing for intramuscular administration.

B. 3 grams: This represents the total amount of medication in the vial, not the volume of diluent to be added. Confusing the total drug amount with diluent volume would result in incorrect preparation.

C. 500 mg/mL: This is the final concentration of the reconstituted solution, not the amount of diluent. It indicates the strength after adding the correct volume of sterile water.

D. 1 mL: Adding 1 mL of diluent would create a solution with a much higher concentration than intended, leading to potential dosing errors and increased risk of adverse effects.

A. Chew the gum briefly: Nicotine gum is designed to be chewed slowly until a tingling or peppery taste is noticed, then “parked” between the cheek and gum to allow nicotine absorption through the oral mucosa. Brief, repeated chewing releases nicotine gradually, enhancing effectiveness and reducing gastrointestinal side effects.

B. Swallow the gum whole: Swallowing nicotine gum prevents absorption through the oral mucosa and can increase gastrointestinal upset. The intended route of absorption is buccal, not gastrointestinal.

C. Crush the gum with tools before chewing: Crushing the gum is unnecessary and can release nicotine too quickly, increasing the risk of side effects such as nausea, dizziness, or palpitations. The gum is formulated for gradual release when chewed properly.

D. Dissolve the gum completely in the mouth: Letting the gum dissolve without chewing does not effectively break the outer shell and limits nicotine release. Proper chewing is required to initiate the pharmacologic effect.