Antibiotic Stewardship for Nurses

Antibiotic resistance is one of the greatest global public health threats. Overuse and misuse of antibiotics drive resistance, leaving patients with infections that cannot be treated with available drugs. Antibiotic stewardship programs (ASPs) exist in most healthcare facilities — nurses are a frontline partner in their success.

The most important stewardship action a nurse can take: collect cultures before the first antibiotic dose.

Cultures identify the causative organism and its antibiotic sensitivities. Without cultures, clinicians cannot de-escalate to a narrower antibiotic, confirm the correct therapy, or recognize treatment failure.

• Blood cultures: Two sets from two different peripheral sites before starting antibiotics. Wipe tops with alcohol; use strict aseptic technique. Do not collect from IV lines unless ordered.
• Urine culture: Midstream clean-catch or catheter specimen. Ensure proper collection technique to avoid contamination.
• Respiratory cultures: Sputum, BAL, or tracheal aspirate — collected before antibiotics when possible.
• Wound cultures: Swab deep tissue from the leading edge of infection — avoid superficial skin flora.
• Sepsis exception: In hemodynamic instability, do not delay antibiotics beyond 1 hour — collect blood cultures simultaneously with or immediately before antibiotic administration.

• Complete the full course: Stopping antibiotics early when feeling better allows surviving (more resistant) bacteria to repopulate
• Infection control: Strict hand hygiene and contact precautions for resistant organisms (MRSA, VRE, CRE, ESBL-producing organisms) prevent spread
• Avoid unnecessary prophylaxis: Prophylactic antibiotics should have a defined indication, start time, and stop time — long courses create resistance without benefit
• Recognize MDRO risk factors: Prior antibiotic use, hospitalization, immunosuppression, healthcare exposure — these patients may harbor resistant organisms
• Clostridium difficile (C. diff) prevention: Use contact precautions and soap-and-water handwashing (alcohol does not kill spores). Every antibiotic course increases C. diff risk.

Nurses monitor antibiotic effectiveness through clinical response — look for improvement in the signs and symptoms that prompted treatment:

• Fever curve: Trending down is a positive sign; persistent or worsening fever suggests treatment failure or wrong organism
• WBC trend: Normalizing WBC indicates resolution of infection; rising WBC suggests inadequate response
• Clinical symptoms: Reduced cough/sputum production (pneumonia), improved wound appearance (skin infection), decreased frequency/dysuria (UTI)
• Culture and sensitivity results: Review promptly when available. Notify provider if organism is resistant to current antibiotic regimen.
• Therapeutic drug levels: Required for vancomycin (trough/AUC-guided dosing), aminoglycosides — collect specimens at prescribed intervals

• Collect cultures before antibiotics — ensure specimens are collected correctly and labeled before the first dose
• Administer the first dose promptly — for sepsis, every hour of delay increases mortality
• Verify allergy history before first dose — document allergy type (rash, anaphylaxis, GI intolerance) clearly
• Monitor and report culture results — communicate to provider when results return to support de-escalation
• Therapeutic drug monitoring — collect vancomycin and aminoglycoside levels at prescribed intervals; never skip or delay
• Assess for adverse effects — rash, fever, GI symptoms, hearing changes, renal function decline
• Question prolonged broad-spectrum therapy — if culture results suggest a narrower agent is appropriate, raise this with the provider
• Document and communicate clinical response — fever trends, WBC, symptom improvement to support therapy review at 48–72 hours

• Complete the full course: Even if feeling better, stopping early allows bacteria to develop resistance and infection to return
• Antibiotics do not treat viruses: Colds, flu, and most sore throats are viral — antibiotics will not help and can cause side effects
• Report GI symptoms: Diarrhea — especially watery or bloody stool — during or after antibiotics may indicate C. difficile infection
• Do not share antibiotics: Prescriptions are specific to the patient's infection and weight — sharing is dangerous
• Probiotics: Taking a probiotic during antibiotic therapy may reduce GI side effects — discuss with provider or pharmacist

• Collect cultures before giving the first antibiotic dose — this is a priority nursing action
• In sepsis, do not delay antibiotics > 1 hour — collect cultures simultaneously, not before delaying treatment
• Vancomycin: collect trough before the fourth dose (or per protocol). Infuse over ≥ 60 min. Red Man Syndrome = flushing/hypotension from rapid infusion — slow the rate, not an allergy.
• Penicillin allergy: assess the type — rash vs anaphylaxis. Cross-reactivity with cephalosporins is low (< 2%)
• Fluoroquinolones: contraindicated in tendon rupture risk (elderly, steroid use); can cause QT prolongation
• C. diff: use soap and water for hand hygiene — alcohol gel does not kill C. diff spores
• Antibiotic priority order for NCLEX: Cultures first → then antibiotics (in non-emergency) OR cultures simultaneously with antibiotics (in sepsis/emergency)