How It Works


Remote monitoring with a heart rhythm monitor that has instant feedback is easy. The AfibAlert® allows users to monitor heart rhythm events including atrial fibrillation (AF or Afib) any time, anywhere. Only contact a healthcare provider if a red-light illuminates on the Afib monitor, or a patient is experiencing serious symptoms.

Self-testing with a Heart Rhythm Monitor

Patients can take a reading by placing their thumbs on the raised metal tabs called “electrodes,” which allows the Afib monitor to detect an arrhythmia. For patients who have physical limitations, wristband or sticky electrodes can be used with an included electrode cable.

Getting Instant Feedback With a Heart Rhythm Monitor

Lohman Technologies’ patented algorithm analyzes the patient’s heartbeat and the appropriate icon illuminates to show what action is needed. AfibAlert’s® algorithm was validated against 51,000+ ECG strips from the MIT-BIH Atrial Fibrillation Database with known diagnosis. The Afib monitor’s results were excellent, with 94.6% accuracy in detecting the presence of arrhythmias. Each recording produces a 45-second diagnostic quality ECG rhythm strip. (Click here to view a sample recording).

This Afib monitor will provide an immediate alert (red light) for Atrial Fibrillation (AF) only. However, it will record all ECG data for future upload and review, but will not detect other potentially life threatening arrhythmias.  The AfibAlert® only determines if Afib is present during the 45-second testing period. The AfibAlert® does not continuously monitor your heart and cannot alert you if an arrhythmia happens any other time. If symptoms are present, data should be transmitted even if there is no outward sign of Atrial Fibrillation. If you feel you are in immediate danger, call 911.

Understanding Your Afib Monitor

The AfibAlert’s® patented algorithm analyzes your ECG data and emits a red or green light, signifying the probability of Afib. The AfibAlert® should be used for guidance only. Only an experienced healthcare professional can make a conclusive diagnosis of atrial fibrillation. It is advisable that your physician or healthcare professional view your recorded data to verify the presence or absence of atrial fibrillation.

Red Light: High probability of AF. Act as specified by your physician. Upload the data to the AfibAlert™ website and inform your physician or call your trans-telephonic service provider as specified by your physician.

Green Light: Low probability of AF. Data has been successfully stored for later upload or transmission. However, if symptoms are present, take appropriate action.

Blue Light: Indicates that the recorder is acquiring and analyzing the data. Also, indicates when data is being uploaded or transmitted to a service center.

Yellow Light: Unable to obtain a reading. May indicate poor electrode contact. Test should be repeated.

Uploading ECG Recordings

Recordings can be uploaded directly to the AfibAlert® website. Either connect the Afib monitor to a Windows PC with a USB cable, or transmit your recording to a service provider through your telephone. Data is ready to be viewed or printed immediately after upload, and can be saved as a PDF file. Patient’s must notify their physician if data has been uploaded for review, as Lohman Technologies does not actively monitor the site. Only authorized personnel have access to your ECG data.

Accessing Stored Data

As an AfibAlert® user or prescriber, you can access your own or your patients’ electrocardiograph (ECG) recordings day or night on the AfibAlert® website. With the purchase of an Afib monitor an account name and password are automatically provided to both the patient and prescribing physician. Use this information to log-on to the AfibAlert® website for viewing data. A patient will use their same account to both upload and view their ECG recordings. Stored ECG recordings are time stamped and colored coded based on what the algorithm detected during the test. You can access data on the AfibAlert® Windows app that available for installation on a PC (Windows XP, 7 , 8 and 10 compatible). An app is also available for mobile devices.


What patients and physicians are saying:

"It is the right kind of solution for patients, because it's a lifetime solution and Afib is a lifetime condition. I'm very impressed by the device."
Dr. Hugh Calkins, MD, Director, Cardiac Arrhythmia Service, Professor of Medicine
"I wish I had had it years ago, so I wouldn't have visited the ER so often…"
Frank (patient)
"The algorithm for detecting atrial fibrillation is extremely accurate. Another benefit to me has been the quality of the strips recorded compared to other single lead heart rhythm monitors. These high quality recordings are useful in identifying and monitoring other conditions as well as afib recurrence."
Robert Baker, MD, FACC, Nevada Cardiology Associates
"I have had the monitor for several years and have to tell you that this unit has saved my wife and I many days of anxiety and stress in knowing that I was not in Afib…"
Sherman (patient)
"The AfibAlert is beneficial in the clinical research arena to monitor for recurrence of atrial fibrillation after ablation. The quality of the ECGs it captures is excellent. In addition, patients find it extremely easy to use which yields high compliance"
John N. Catanzaro, MD, Assistant Professor of Medicine, University of Florida Health - Jacksonville
"I've had my AfibAlert for about nine months (Afib, for four years). It is easy to use and has taught me a lot about my particular Afib patterns. My meds were keeping my heart rate down most of the time and so I thought I wasn't fibrillating unless I had one of the big, obvious episodes; the monitor taught me that I was fibrillating quite often at low heart rates, too. I'm not sure I would ever have figured this out by myself. I only wish I had discovered AfibAlert a year or two earlier."
Mary (patient)
View all testimonials