6 Adverse Drug Reaction Nursing Practice
A practical guide to recognizing and responding to medication reactions, prioritizing urgent care, communicating clinical findings, and documenting suspected adverse events.
Recognizing and prioritizing medication reactions
Medication reactions can be predictable side effects, allergic reactions, toxicity from excessive exposure or impaired clearance, or harm related to a or interaction. Assess the patient rather than relying only on the medication list.
Prioritize airway, breathing, circulation, level of consciousness, vital signs, and how symptoms are progressing. For a suspected serious reaction, stop the suspected medication when safe, summon emergency help, and begin applicable emergency measures and facility protocols. Notify the prescriber and pharmacist, communicate concise findings using SBAR, and document objective observations and the patient’s response.
In a U.S. clinical setting, follow current orders, scope of practice, and local emergency protocols. Do not delay emergency treatment while seeking routine authorization.
Responding to suspected
Generalized hives, lip swelling, wheezing, and a blood pressure of 82/48 mm Hg during an IV cefazolin infusion indicate a suspected emergency, even when the allergy record is unclear and the patient reports a penicillin allergy. Stop the infusion and activate the emergency response.
Treat the situation as suspected : support airway and breathing, obtain emergency assistance, and administer intramuscular epinephrine promptly under the applicable emergency protocol or order. Do not delay epinephrine to try an antihistamine first. Monitor vital signs and cardiac rhythm, and prepare for advanced airway support if swelling or breathing difficulty worsens. There are no absolute contraindications to epinephrine use in .
Communicate the medication, dose, and infusion timing; known allergy history; symptom onset and progression; vital signs; interventions; and response.
Recognizing
Two hours after prescribed oxycodone, a postoperative patient who is difficult to awaken and breathing 7 times per minute may have life-threatening . This takes priority over routine effects such as constipation or mild drowsiness.
Hold further opioid doses, call for urgent help, support airway and breathing, and administer naloxone if indicated under protocol or order. Continue close monitoring because respiratory depression may persist or return. Report the dose and time given, respiratory status, level of consciousness, oxygenation, and response to treatment. A marked decline in alertness or breathing requires immediate escalation.
Responding to possible
Several days of vomiting and diarrhea followed by coarse tremor, slurred speech, unsteady gait, and new confusion should raise concern for rather than simply expected medication effects. Assess vital signs, mental status, hydration, and safety; institute fall precautions and promptly notify the prescriber or emergency team.
Do not administer another dose until the responsible clinician directs next steps. Report the symptoms, last dose, recent fluid loss, medication and supplement list, and available laboratory results. Evaluation of lithium concentration, renal function, and electrolytes may be anticipated. If overdose is suspected, contact emergency services and Poison Help in the United States at 1-800-222-1222 for guidance.
Escalating possible bleeding
Black, tarry stools and light-headedness on standing in a patient taking warfarin may indicate significant bleeding. Assess vital signs and current symptoms, promptly escalate to the prescriber or emergency team, and follow orders or protocol regarding further warfarin doses. Do not independently change or reverse anticoagulation.
Report the bleeding signs, warfarin dose and most recent dose, ibuprofen use, relevant laboratory results, and hemodynamic changes. Ibuprofen is an NSAID, and NSAIDs such as ibuprofen can interact with warfarin and increase bleeding risk.
Preventing harm before and after administration
If a patient’s record documents an immediate reaction to amoxicillin involving hives, throat swelling, and difficulty breathing, do not administer a new amoxicillin order. Verify the allergy history and reaction, maintain the allergy alert, and promptly contact the prescriber and pharmacist to clarify the order and identify a safe alternative.
Communicate the specific prior symptoms rather than recording only “allergy.” Document the order discrepancy, who was notified, instructions received, and any replacement order. Resolve a history of serious immediate allergic reaction before administration.
For mild nausea after starting an oral medication, assess timing and severity, oral intake, hydration, other medications, and the medication’s instructions. Mild nausea may be a nonallergic adverse effect, but do not assume it is harmless or advise changing how the medication is taken unless the labeling or prescriber supports that advice. Report persistent or worsening symptoms and follow the medication-specific plan.
New breathing difficulty, facial or throat swelling, collapse, severe or rapidly spreading rash, blistering, or skin peeling requires urgent evaluation; suspected is an emergency.
Communicating and documenting adverse events
Keep documentation factual and timely. Record the suspected medication and dose, route and administration time; symptom onset and progression; objective assessment and vital signs; relevant allergies, medications, and laboratory findings; people notified and when; interventions; and the patient’s response and disposition.
Report serious suspected medication-related events through institutional safety processes. FDA MedWatch also accepts voluntary reports of suspected serious problems and medication errors.