A nurse is caring for a client prescribed Spironolactone. Which nursing action is most appropriate regarding monitoring for signs of hyperkalemia and restricting potassium supplements?
1Administer protamine sulfate 25 mg IV over 10 minutes as a reversal agent for warfarin; protamine binds to warfarin directly and neutralizes its anticoagulant effect, and is the reversal agent of choice for warfarin in emergency settings.
2Hold warfarin and administer 4-factor prothrombin complex concentrate (PCC, Kcentra) per weight-based protocol PLUS slow IV vitamin K (phytonadione) 5–10 mg, with continuous monitoring; FFP is acceptable if PCC is unavailable.✓ Correct answer
3Continue the current warfarin dose, maintain the client in a supine position with head of bed at 30 degrees, and perform serial neurological checks every 4 hours to monitor for worsening hemorrhage.
4Hold warfarin and give a single oral dose of vitamin K (phytonadione) 1–2.5 mg, then recheck the INR after 24 hours; this approach is recommended per American College of Chest Physicians guidelines for INR 3.5–4.5 in nonbleeding patients.
Explanation
When administering Spironolactone, key nursing considerations include monitoring patient status, checking critical laboratory values, and providing appropriate safety education. Unsafe practices such as stopping medications abruptly or doubling missed doses are incorrect.
Clinical reasoning summary Warfarin-related life-threatening hemorrhage — emergency reversal Intracranial hemorrhage on warfarin is a true emergency. INR alone is misleading — even a value within target range can accompany life-threatening bleeding when the patient has anticoagulant on board. Standard guideline-based reversal:
(1) Hold all anticoagulants/antiplatelets immediately. (2) 4-factor PCC (Kcentra) is preferred over FFP because it acts within minutes, requires small volume (~100 mL), and replaces factors II, VII, IX, X plus protein C and S. Dose is INR-guided per weight (e.g., 25 IU/kg for INR 2-3.9, 35 IU/kg for INR 4-6, 50 IU/kg for INR >6, max 5000 IU). FFP is used only if PCC is unavailable (slower onset, large volume, fluid overload risk). (3) Slow IV vitamin K 5-10 mg co-administered to provide sustained reversal. Vitamin K corrects more slowly (12-24 h) but prevents INR rebound after PCC wears off. Push too fast risks anaphylactoid reaction — give over ≥30 minutes diluted. (4) Continuous monitoring: ECG, BP, repeat neuro exam, and recheck INR after PCC. (5) Concurrent supportive care: neurosurgery consult, blood pressure control, head-of-bed positioning per neuro guidance, seizure precautions, definitive surgical management as indicated.
Other choices: • Option 1 (hold + low-dose oral vitamin K + 24-h recheck) is appropriate for asymptomatic supratherapeutic INR, NOT life-threatening hemorrhage. • Option 2 (continue warfarin, observe) is dangerous — bleeding will progress. • Option 4 (protamine sulfate) reverses HEPARIN, not warfarin. Confusing the two is a high-frequency NCLEX trap.