血液透析病患的哪項檢驗數據需優先關注？

血液透析（Hemodialysis）病人的腎臟排泄功能極其有限，極易累積鉀離子。高血鉀（Hyperkalemia）是透析病患最常見且致命的電解質失衡，因鉀離子會直接影響心肌細胞的去極化，導致致命性心律不整（如心室顫動）。在臨床上，相較於其他檢驗值，鉀離子濃度是護理師必須優先監測並預防的危急值，以維護病人安全。

Hemodialysis clients have severely limited renal excretion and easily accumulate potassium. Hyperkalemia is the most common and lethal electrolyte imbalance in dialysis patients because potassium directly affects cardiac myocyte depolarization, causing fatal arrhythmias (e.g., ventricular fibrillation). Compared with other labs, potassium is the critical value the nurse must prioritize to ensure patient safety.