What Is an Implantable Loop Recorder?
An implantable loop recorder (ILR) is a small, long-term heart monitoring device placed just under the skin to help detect abnormal rhythms—especially those related to conditions like atrial fibrillation (AFib). AFib is a common but sometimes silent irregular heartbeat that can significantly increase the risk of stroke if left untreated. The ILR continuously records your heart’s electrical activity and helps identify these subtle, hard-to-catch rhythms.
The device is about the size of a paperclip and is implanted just beneath the skin in the chest during a simple, minimally invasive procedure. Once in place, the ILR silently monitors your heart 24/7 for up to three years. It wirelessly transmits data to your doctor, even while you sleep, allowing your care team to detect potentially dangerous rhythms early and take steps to prevent serious complications like stroke.
Benefits With Our Service
At our cardiology clinic, we use implantable loop recorders to provide peace of mind and early detection for patients with unexplained fainting, dizziness, palpitations, or a history of stroke or atrial fibrillation. This technology is especially helpful for patients who may not feel symptoms but are still at risk for silent AFib.
Our expert team guides you through the entire process—from evaluation and implantation to remote monitoring and follow-up care. If AFib or other arrhythmias are detected, we can take prompt action to manage your condition and lower your risk of stroke. With our comprehensive monitoring approach, you gain clarity, protection, and long-term support.
Health Tips & Info
Before your ILR procedure, you may be asked to avoid eating or drinking for several hours. Inform your provider of all medications, especially blood thinners, and plan to have someone drive you home afterward.
After the implant, it’s normal to have slight bruising or a small bump under your skin. Avoid heavy lifting or upper body strain for the first week. The device begins monitoring immediately and sends data to your care team through a bedside transmitter or smartphone app. Regular follow-ups will ensure the device is working properly and review any findings. If you notice redness, swelling, or fever at the site, contact your doctor right away. With an ILR in place, you and your doctor can stay one step ahead of silent arrhythmias and prevent stroke before it happens.
Loop Recorder Quick Info
A small device that monitors your heart 24/7 for up to 3 years — even while you sleep — to detect hidden arrhythmias and help prevent stroke.
“Thanks to the loop recorder, my doctor finally figured out what was causing my dizzy spells — and now I feel safe again.”
– Janet R., patient
Helpful Resources:
Atrial fibrillation can occur without symptoms — and is a major cause of preventable stroke. Loop recorders help catch it early.
An ILR is recommended when you have symptoms like fainting, dizziness, palpitations, or irregular heartbeats that are hard to detect during short-term testing. It’s also used to monitor for atrial fibrillation (AFib), especially in people who’ve had a stroke or are at high risk. The ILR helps your doctor find the cause of these symptoms by recording your heart’s rhythm over months or even years.
The ILR is implanted through a very small incision in your chest under local anesthesia. It’s a quick and low-risk procedure—most patients feel only mild soreness or bruising afterward. You’ll be able to go home the same day and return to most normal activities within a few days.
The ILR works automatically, continuously recording your heart rhythm. It transmits data securely to your doctor through a bedside monitor or mobile app. If it detects something unusual, your care team will be alerted and can contact you quickly if action is needed. You won’t feel anything while it’s working—it just quietly keeps watch over your heart.