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The Zio® monitor

Precision in cardiac monitoring begins here.

iRhythm's thinnest and lightest long-term continuous monitor (LTCM)1 is at the heart of the iRhythm monitoring service.

Learn how to use
Zio monitor

Precisely what patients need

Our latest generation Zio monitor is smaller2 and comfortable3,4 so patients can go about their daily activities, including sleeping, showering, and exercising.5-8 The Zio monitor drives high patient compliance,4 ensuring continuous, uninterrupted ECG recording, resulting in a comprehensive end-of-wear report.5,6

Easy

Patient-centric design makes it simple to apply and wear9

Convenient

Breathable,8,10 pliable,3,4 and waterproof housing8,10 made for patients' every day3,4

Accurate

The iRhythm monitoring service utilizes advanced FDA-cleared AI with the only deep-learned algorithm clinically proven to be as accurate as expert cardiologists11-14
Patient wearing Zio monitor

Exceptional accuracy for extraordinary results

The iRhythm monitoring service, featuring Zio ECG monitors, provides highly accurate data you can trust and helps you make the right diagnosis the first time.9

  • 99% patient compliance with prescribed wear times4
  • Highest yield of specified arrhythmia diagnosis compared to all other monitoring services15-18
  • Lowest likelihood of repeat testing compared to all other monitoring services15-18
  • End-of-wear reports with 99% physician agreement19

Get started with an end-to-end service

The iRhythm monitoring service incorporates leading technology and tools at each step of the cardiac monitoring experience.

Artificial intelligence graphic

Advanced AI

We combine a deep-learned, FDA-cleared algorithm with Certified Cardiographic Technicians11-14 to generate end-of-wear reports with 99% physician agreement.19
Learn more
iRhythm ZioSuite on a laptop

ZioSuite® portal and app

Interpret reports, manage patients, and more — from the computer or on the go with the provider mobile app.
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MyZio app on cellphone

MyZio® app

Supports patients on their monitoring journey with digital symptom logging, educational content, and reminders.
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Zio monitor

Zio monitor IFU

Learn how to apply and use the Zio monitor.

Download Instructions for Use

Keep reading

Clinical Article
Reynolds et al, American Heart Journal, 2023.
Comparative Effectiveness of ACM Strategies (CAMELOT Study)
A retrospective study of variations in ACM strategies, clinical outcomes and health care costs in diagnostic-naïve patients
Read more
Clinical Article
Barrett et al., American Journal of Medicine, 2014.
Comparison of 24-Hour Holter Monitoring Versus 14-Days
A prospective study comparing the detection of arrhythmia events over total wear time with the Zio device to Holter monitoring
Read more
Clinical Article
Eysenck et al., Journal of Interventional Cardiac Electrophysiology, 2019.
Comparison of 4 ACMs to Permanent Pacemaker AF Detection
A prospective, randomized study to compare ACM AF burden and AF episodes in patients implanted with a pacemaker with known AF
Read more
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  1. Based on published information from the four largest LTCM manufacturers. Data on file. iRhythm Technologies, 2024.
  2. Data on file. iRhythm Technologies, 2023.
  3. Zio monitor Instructions for Use. iRhythm Technologies, 2023.
  4. Data on file. iRhythm Technologies, 2022.
  5. Zio XT Clinical Reference Manual. iRhythm Technologies, 2019.
  6. Zio monitor Instructions for Use. iRhythm Technologies, 2023.
  7. Zio AT Clinical Reference Manual. iRhythm Technologies, 2022.
  8. The device should not be submerged in water. During a bath, keep the device above water. Please refer to the device Instruction for Use or Clinical Reference Manual.
  9. Data on file. iRhythm Technologies, 2022-2023.
  10. Data on file. iRhythm Technologies, 2017, 2023.
  11. Data on file. iRhythm Technologies, 2020.
  12. Hannun et al. Cardiologist-level arrhythmia detection and classification in ambulatory electrocardiograms using a deep neural network. Nat Med. 2019;25:65-69. doi.org/10.1038/s41591-018-0268-3
  13. Deep-learned algorithm is only available in the United States, European Union, and United Kingdom. ​
  14. FDA 510K clearance, CE mark, and UKCA mark.
  15. Reynolds et al. Comparative effectiveness and healthcare utilization for ambulatory cardiac monitoring strategies in Medicare beneficiaries. Am Heart J. 2024;269:25-34. doi.org/10.1016/j.ahj.2023.12.002
  16. A specified arrhythmia refers to an arrhythmia encounter diagnosis as per Hierarchical Condition Categories (HCC) 96.
  17. Based on previous generation Zio XT device data. Zio monitor utilizes the same operating principles and ECG algorithm. Additional data on file.
  18. iRhythm LTCM service refers to Zio XT and Zio monitor service.
  19. Based on a review of all online Zio XT, Zio monitor, and Zio AT end-of-wear reports. Data on file. iRhythm Technologies, 2023.

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