Match each clinical presentation with the most appropriate antimicrobial stewardship intervention based on current clinical guidelines.
- A 68-year-old male requires mechanical ventilation in the surgical intensive care unit and is receiving empiric vancomycin and piperacillin-tazobactam for pneumonia. Sputum cultures yield heavy growth of Pseudomonas aeruginosa susceptible to piperacillin-tazobactam; respiratory MRSA screening is negative.Discontinue empiric MRSA coverage and maintain targeted beta-lactam therapy.
- An 81-year-old female resident of a nursing facility is noted by staff to have malodorous urine. Urinalysis reveals positive leukocyte esterase and 50 WBCs/hpf. She remains afebrile, communicates clearly without delirium, and reports no suprapubic discomfort.Withhold antimicrobial agents as there is no indication to treat this condition.
- A 39-year-old male was admitted with multilobar community-acquired pneumonia and initiated on intravenous ceftriaxone and azithromycin. Seventy-two hours later, his oxygen requirement has resolved, he has been afebrile for a full day, and he is eating meals enthusiastically.Convert to an appropriate oral antimicrobial regimen and prepare the patient for discharge.
- A 26-year-old female athlete undergoes straightforward incision and drainage of a 2.5-cm fluctuant, purulent furuncle on her right calf. Her temperature is 37.1 °C (98.8 °F), heart rate is 72/min, and the surrounding margin of erythema is minimal.Recommend warm compresses and local wound care without prescribing systemic antibiotics.
Cevap
The scenarios represent core stewardship interventions: (1) De-escalating MRSA coverage when screens are negative, (2) Withholding antibiotics for asymptomatic bacteriuria in the elderly, (3) Switching to oral therapy when a patient demonstrates clinical stability, and (4) Foregoing systemic antibiotics when source control (incision and drainage) is sufficient for a simple abscess.
Proper antimicrobial stewardship involves selecting the correct drug and dose, but crucially relies on knowing when to stop, narrow, or avoid antibiotics entirely. Each match demonstrates a high-yield stewardship decision point recognized by current infectious disease guidelines.
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Core Antimicrobial Stewardship Principles