Question

A 25 year old male patient presents to the office with a cc of left arm pain and generalized malaise of 1 week duration following a dirt bike accident. Laceration of skin on dorsum of left forearm with erythema, edema, and the presence of purulent discharge from wound. Patient was alert. Temperature and respirations were elevated. Wound was irrigated, swabbed, and injected with antibiotic before being dressed and bandaged. The doctor prescribed medications listed below. Culture results came back positive for gram-positive bacteria Staphylococcus. Patient was instructed to follow medication therapy as prescribed and to follow up with doctor if pain, redness, and/or discharge in arm worsened or did not subside.

Based on the information provide above in Scenario 2 The doctor medications prescribed to the patient are listed below. For each medication, give the drug class and, and briefly explain why the patient is taking the medication based on this scenario. Topical bacitracin Drug Class: Reasoning:

Answer 1

Topical Bacitracin is an antibiotic (drug class) which is a mixture of related cyclic peptide that inhibits the growth of gram positive bacteria by inhibiting the cell wall and peptidoglycan formation.

Since the wound swab culture are positive for gram positive streptococcus, topical antibiotics for against gram positive organism are prescribed.