A 22-year-old woman presents with pain and swelling of the plantar surface of her foot. She reports that two days prior to arrival she was walking in sneakers and stepped on a nail that punctured her foot. Physical examination demonstrates 3 cm of warm, blanching erythema without induration or fluctuance. Her tetanus vaccination is up-to-date. An X-ray does not show any foreign body. Which antibiotic is an appropriate choice to cover the organism at risk from her shoe?A CiprofloxacinB DicloxacillinC LinezolidD Trimethoprim-sulfamethoxazole

A)Ciprofloxacin

Explanation:

There is a very high risk for infection and also foreign body retention associated with puncture wounds on the bottom of the foot.

Pseudomonas aeruginosa is the causative organism requiring treatment especially and specifically in the case of a puncture wound through the sole of a shoe.

As mentioned in theory, the organism is transferred to the skin through the puncturedue to affinity for rubber or plastic materials and therefore . In general, Pseudomonas rarely causes skin and soft tissue infections. Ciprofloxacin is a fluoroquinolone with adequate Pseudomonas aeruginosa coverage. As it is teratogenic, care must be taken in children with ciprofloxacin.

Ciprofloxacin is the drug of choice against pseudomonas aeruginosa.

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