Final answer:
The Zio XT patch is a cardiac monitor with an adhesive, used for tracking heart rhythms and marking symptoms by pressing a button.
Step-by-step explanation:
The Zio XT patch is a wearable cardiac monitor that patients can use to track heart rhythms over an extended period, typically up to 14 days. This device sticks to the patient's skin using an adhesive and features a button that the patient can press when experiencing a symptom such as palpitations or dizziness. This action marks the recorded data to indicate an event for later review by healthcare professionals. The Zio XT patch is designed to be lightweight, water-resistant, and easy for the patient to manage while continuing with regular daily activities.