階段2 — 分析線索。完成四項安全聲明，以指導對PCA、鉀和肝素結果的應對。

The PCA demand button should be activated by ::선택::any family member who sees a pain cuethe awake patient who can understand and physically activate itthe nurse whenever the patient is asleep. When a central-line-only 400 mEq/L potassium infusion causes burning at a peripheral site, the nurse should first ::선택::increase the rate so the vein is exposed for less timemove the unchanged bag immediately to another peripheral veinstop the infusion and assess and manage the site under policy. A slightly out-of-range aPTT during unfractionated heparin therapy is managed by ::선택::verifying the result and infusion, assessing bleeding, and applying the institution-specific nomogramusing the same fixed reduction in every hospitalraising the rate to protect the new coronary stent. If opioid-related respiratory depression persists despite initial support, the nurse should prepare to give ::선택::a full vial rapidly in every postoperative patientprotocol-directed titrated naloxone while supporting ventilationadditional morphine to improve respiratory comfort.