病人正在靜脈滴注萬古黴素（Vancomycin）。下列哪項發現需要護理師立即暫停滴注？

萬古黴素（Vancomycin）輸注過程中，若出現臉、頸、胸部潮紅，臨床上稱為「紅人症候群」（Red Man Syndrome）。這是因為藥物輸注過快導致組織胺（Histamine）大量釋放，引發血管擴張。這雖非真正的免疫過敏反應（Anaphylaxis），但仍需立即暫停輸注，待症狀緩解後，依醫囑調整輸注速度。

Flushing of the face, neck, and chest during vancomycin infusion is characteristic of 'vancomycin infusion reaction' (formerly 'red man syndrome'), caused by direct histamine release when the drug is infused too rapidly. The nurse must pause the infusion, then resume at a slower rate (typically over at least 60 minutes per 1 g) after symptoms resolve, often with antihistamine pretreatment. Normal BP, mild itching without hives, and metallic taste do not require stopping the infusion.