in a heartbeat

Our goal is to reduce healthcare costs and improve arrhythmia detection, characterization and diagnosis by providing simple, seamless integration of heart rhythm data from client to cloud to clinician. iRhythm’s innovative digital healthcare technologies are improving doctors’ ability to detect arrhythmias, and have the potential to change the course of treatment. Our ZIO® Service analyzes up to 20,000 minutes of heartbeat data per patient in order to give you the most efficient and cost-effective platform for evaluating patients with suspected arrhythmias.

Data from over 51 million hours of heart beats of continuous ECG recordings have been collected and analyzed, making our cardiac rhythm database the largest in the world. We use this data to refine and enhance our algorithm, thus providing the highest quality results, unmatched by any other cardiac monitoring service.

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Collect, detect
and develop

Over 800 institutions and more than 300,000 patients have benefited from the ZIO® Service to rule-in and rule-out arrhythmias earlier in the diagnostic pathway using our FDA-cleared technology and algorithms.

As part of our ongoing commitment and contribution to the clinical evidence for improving arrhythmia detection, we participate in clinical trials and sponsored research.

The best offense is a good defense

Did you know that one-third of Americans have an irregular heartbeat, such as atrial fibrillation (AFib), and don't know they have it? Research has found that AFib increases risk of stroke by 5 times. Fortunately, treatments are available. To assess your risk for stroke, you'll need to find out if you have an arryhtmia. The ZIO® Service does just that.


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over other cardiac monitors1, the ZIO® XT Patch is small, discreet, and water-resistant. It can be worn in the shower, while sleeping and during moderate exercise.

Easy integration, patient satisfaction and ALL of the high quality results

We’re committed to helping you deliver high quality cardiovascular care – from planning ZIO® Service implementation to professional support before, during and after the prescription period.

By continuously recording beat-to-beat patient data for up to 14 days, the ZIO Service is a cost-effective and efficient arrhythmia detection platform that uniquely provides true AFib burden.

The ZIO Service integrates a discreet patch that continuously monitors and records up to 20,000 minutes worth of patient heartbeats, with delivery of a concise, high quality report.

Learn more about how we curate the entire wear period data for complete transparency.

How was your experience using ZIO® XT Service? Click on the button to submit your own story.

Success Stories

Gregory Fisher
Nobody knew I was wearing the patch. I could do my work, perform my daily routine without catching the wires and I could shower.I was relieved to be able to resume my active family, work and recreational activities. I urge other patients who suspect AFib or are at increased risk to see their doctors promptly.I felt like a normal human being with ZIO® XT Patch. I didn’t have to explain myself to people.You get scared because it’s your heart, but it’s curable. The technology is so far advanced today. People should not have to suffer, especially if they know to get to the doctor quickly.
Lawrence Shane
THANKS TO WHOEVER PUT YOUR MONITOR TOGETHER.  It was simple to use, unobtrusive, easy to access in order to "highlight" events.....and I even got to shower regularly! It was absolutely comfortable. Most of the time, awake or asleep, I didn’t notice that it was there. Night & day difference in size and convenience compared to other monitors.
KC Branscomb Kelley
As an active mid-fifties woman with a busy athletic life-style, being diagnosed with serious AFib needing continuous monitoring was a huge blow to me. When ZIO® XT Patch came along as a viable substitute to my prior monitoring system, I was thrilled that I could now exercise, shower, and engage socially without the visible stigma. I felt I was reclaiming some of my life back.
Mary-Margaret Robbins

I ended up needing a total pacemaker replacement and wire extraction. Without ZIO Patch no one was listening nor able to see what my heart/pacemaker issues were with the old 12-lead monitor. We had ideas, but nothing concrete until the ZIO Patch.  ZIO Patch gave my MD at Brigham and Women's the tools necessary to come up with a plan and fix what was wrong and know what was wrong. I can't thank iRhythm enough for inventing this state-of-the-art diagnostics tool. It's a real game changer. I am a mother of a 5 year old and now can look forward to enjoying an active life watching my daughter grow up. And stop living in fear that my pacemaker and heart weren't functioning correctly and missing out on 90% of the joys of being a mom. I am trying to heal and soon will be back to the active life I once had before Lyme Carditis took everything away. Thank you ZIO Patch!

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Advances in Digital Healthcare Technologies Make Our Hearts Race


November 2015

Study Launched by STSI Uses Wearable Sensors to Detect Atrial Fibrillation

November 2015

iRhythm Technologies to Present at the 27th Annual Piper Jaffray Healthcare Conference

November 2015

iRhythm Technologies Launches New iOS App Enabling Patients to Report Irregular Heartbeat Symptoms for Physician Diagnosis

November 2015

iRhythm Technologies Founder to Present Key Insights Into Digital Health Technology Trends in Cardiac Care at the American Heart Association Scientific Sessions

July 2015

iRhythm Technologies Appoints Marga Ortigas-Wedekind Executive Vice President, Global Marketing

May 2015

The Promise Of The Digital Health Revolution For Clinical Trials

May 2015

iRhythm Expands Leadership Team with Appointment of Derrick Sung, Ph.D. as Executive Vice President of Global Strategy and Corporate Development

April 2015

New Data Shows iRhythm's ZIO Service Increases Detection And Diagnosis Of Silent Atrial Fibrillation In High-Risk Patients

April 2015

Banner Health to Offer iRhythm ZIO Service for Continuous Cardiac Monitoring

April 2015

Who are 2015’s Most Innovative Wearable Health Companies? iRhythmTech is listed as 1 of the 5 Hotest Wearable Health Problem Solvers 2015

March 2015

New Study Advances Understanding of Asymptomatic and Episodic Arrhythmias

February 2015

ZIO Patch Provides New Tool in Heart Condition Diagnosis: Video interview with Judy Lenane

February 2015


February 2015

New Study Shows High Compliance and Accuracy among Patients Using iRhythm Technologies’ ZIO® XT Patch to Detect Atrial Fibrillation

December 2014

iRhythm Technologies, Inc. Awarded Ambulatory Health Care Accreditation from the Joint Commission

December 2014

iRhythm Technologies Receives CE Mark for ZIO® Service, Enters First International Market with CardioLogic Ltd Partnership in United Kingdom

December 2014

iRhythm Technologies to Present at the Piper Jaffray Healthcare Conference

November 2014

New Study Demonstrates for the First Time High Burden of Atrial Fibrillation is Associated with Lower Cognitive Function

September 2014

NEWS – Researchers Discuss Atrial Fibrillation and ZIO® Service For Detection and Management

September 2014

September is National Atrial Fibrillation Awareness Month: Americans Lack Awareness About Atrial Fibrillation and Stroke Risk

September 2014

September is National Atrial Fibrillation Awareness Month: Survey Shows Americans Lack Awareness About “Afib,” Its Risk Factors and Symptoms

May 2014

Study Presentations at Heart Rhythm 2014 Support the Use of iRhythm's ZIO® Service to Detect Atrial Fibrillation, Other Cardiac Arrhythmias

May 2014

iRhythm Secures $17 Million in Funding Led by Novo A/S as Company Sees Record Growth for Its ZIO® Service

March 2014

New Study Demonstrates Clinical Utility of iRhythm’s ZIO® Service to Rule In and Rule Out Cardiac Arrhythmias in Discharged Emergency Department Patients

February 2014

ABC7 TV Clip: ZIO Patch helps diagnose heart conditions with more accuracy

February 2014

New Data Support Use of iRhythm’s ZIO® Service to Identify Cardiac Arrhythmias in Stroke and TIA Patients

January 2014

iRhythm Announces That ZIO® Service Included Under New Aetna Policy Covering Long-Term Continuous Monitoring of Patients With Suspected Heart Arrhythmias

January 2014

ZIO® Service Identifies Significantly More Cardiac Arrhythmias Than the Traditional Holter Monitor, According to Study Published Online in the American Journal of Medicine

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