A LINQ insertable cardiac monitor is a small heart monitor that is implanted under the skin. Its function is to capture any abnormal heart rhythm, such as atrial fibrillation. It continuously obtains data and automatically sends all relevant heart rhythm data to your physician. The LINQ also comes with a device that is used to manually record heart rhythm when symptoms occur. This device is helpful for patients with unexplained fainting (syncope) or palpitations. It is inserted under the skin by a physician in an outpatient procedure. It is not attached to the heart and is safe in MRI machines.