Final answer:
Stopping lorazepam abruptly can cause severe withdrawal symptoms, and it is recommended to gradually taper the dose under medical guidance.
Step-by-step explanation:
True, the nurse should warn Mrs. Cole and her husband that lorazepam therapy should not be stopped abruptly. Stopping lorazepam suddenly can lead to withdrawal symptoms which can be severe and include symptoms such as anxiety, sleep disturbances, seizures, and other potentially serious consequences. Instead, a gradual tapering of the dose under medical supervision is advised to minimize withdrawal effects and ensure patient safety.