ZEUS System (Zio Watch)
Overview
The ZEUS System (Zio Watch) by iRhythm Technologies is an FDA-cleared, AI-powered wearable solution designed for long-term continuous cardiac monitoring. It combines a patient-centric wearable biosensor, the Zio Watch, with the ZEUS (Zio ECG Utilization Software) System, which is an artificial intelligence algorithm. This integrated system processes and analyzes electrocardiogram (ECG) and photoplethysmogram (PPG) data to detect and report on the presence and burden of Atrial Fibrillation (AFib) over an extended monitoring period, typically up to 14 days.
The iRhythm monitoring service, which includes the Zio Watch and ZEUS System, aims to provide clinicians with accurate, clinically actionable insights to aid in the diagnosis of cardiac arrhythmias. Data collected by the Zio Watch is analyzed by an FDA-cleared, deep-learned algorithm and then curated and verified by Qualified Cardiac Technicians to generate comprehensive end-of-wear reports. Physicians can interpret these reports and manage patients through the ZioSuite® portal and a dedicated provider mobile app, while patients are supported by the MyZio® app for symptom logging and educational content. The system is designed to be comfortable and convenient for patients, promoting high compliance, and integrates seamlessly with Electronic Health Records (EHRs) to streamline clinical workflows.
Reviewed by Pouyan Golshani, MD — Interventional Radiologist
Key Features
- Wearable biosensor (Zio Watch) for continuous ECG and PPG data collection
- AI-powered algorithm (ZEUS System) for advanced arrhythmia detection and analysis
- Long-term continuous monitoring for up to 14 days
- Detects and characterizes Atrial Fibrillation (AFib) burden
- Cloud-based data analytics and processing
- Clinically actionable reports with high physician agreement (99%)
- ZioSuiteu00ae portal and provider mobile app for report interpretation and patient management
- MyZiou00ae patient app for digital symptom logging, educational content, and reminders
- Patient-centric design (small, comfortable, breathable, waterproof)
- Seamless Electronic Health Record (EHR) integration
Use Cases
- Long-term continuous monitoring for Atrial Fibrillation (AFib)
- Detection and diagnosis of various cardiac arrhythmias
- Providing clinically actionable insights for physicians
- Remote patient monitoring and management
- Reducing the need for repeat cardiac testing
- Early detection and prevention of cardiac disease
What Physicians Need to Know
Leverage the Zio Watch's extended monitoring capabilities (up to 14 days) for a higher diagnostic yield, particularly for transient or paroxysmal atrial fibrillation, which might be missed by shorter-term monitoring. Utilize the ZioSuite portal and EHR integration for efficient patient management, streamlined ordering, and comprehensive report interpretation. Remember that the ZEUS System provides AI-analyzed and technician-verified reports to aid in diagnosis and management of AFib, and it is indicated for adult patients (22 years or older) susceptible to or diagnosed with AFib, not for critical care patients.
The Zio Watch with ZEUS System is designed for seamless integration into clinical workflows. It offers robust EHR integration, including a direct connection with Epic Aura, which streamlines the ordering process, patient registration, and electronic delivery of detailed reports. The ZioSuite web portal and mobile application serve as central hubs for healthcare professionals to manage patients and access clinical data. Additionally, the MyZio patient app enhances patient engagement by providing tools for symptom logging and educational resources.
Details
| Category | Cardiology AI, Wearables & Remote Monitoring (RPM) |
| Pricing | Contact vendor — N/A |
| Deployment | Cloud-based system with a wearable device |
| Compliance | |
| BAA Available | Unknown AI-estimated |
| HIPAA Compliant | Unknown AI-estimated |
| FDA Status |
1 AI-estimated The ZEUS System (Zio Watch) received FDA 510(k) clearance (K213409) on July 19, 2022. It is intended to process and analyze ECG and PPG based data to detect and report on the presence of Atrial Fibrillation (AF) over the monitoring period, providing ECG information for diagnosis and contextual information for AF. It is indicated for adult patients 22 years or older who are susceptible to developing or have been diagnosed with AF, and is not intended for use on critical care patients. |
| Integrations | |
| EHR | Not specified |
| Specialties | Cardiology, Family Medicine, Internal Medicine |
What the Web Says
The ZEUS System (Zio Watch) is an FDA-cleared, prescription-based wearable and software system designed for long-term continuous monitoring and detection of Atrial Fibrillation (AFib) and other cardiac arrhythmias. It aims to provide clinical-grade data to physicians, aiding in diagnosis and intervention. The Zio Watch utilizes continuous photoplethysmography (PPG) and AI-based algorithms to detect AFib and estimate its burden over time.
Overall: PositiveStrengths
- Clinical-grade, long-term continuous monitoring for AFib and other arrhythmias.
- FDA-cleared device and AI-powered software for accurate data analysis.
- Provides comprehensive, curated reports to clinicians, improving diagnostic yield and reducing the need for repeat testing.
- Patient-centric design with a small, comfortable, water-resistant adhesive patch, leading to high patient compliance.
- Automated alerts to clinicians when abnormalities are detected, allowing for earlier intervention.
- MyZio app for digital symptom logging and educational content.
Limitations
- Some users report skin irritation, itching, or rash from the adhesive.
- Device may become loose or fall off, especially with sweat or physical activity.
- Lack of real-time feedback to the patient.
- Concerns about the device hitting transmission limits, potentially leading to missed data for high-risk patients.
- Some users on Reddit found consumer smartwatches (like Apple Watch) to be superior in detecting AFib in specific instances.
- Not yet commercially available at the time of some reviews (2022-2023).
Based on reviews from: Reddit, Good e-Reader, accessdata.fda.gov, DAIC, Medical Product Outsourcing, Cardiac Rhythm News, YouTube, iRhythm, PubMed, Oxford Academic, Capterra, Apple App Store, MedGrade
Last updated: 2026-07-18
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