Apple Irregular Rhythm Notification Feature Software Instructions
- June 5, 2024
- Apple
Table of Contents
Apple Irregular Rhythm Notification Feature Software
Instructions for Use
Irregular Rhythm Notification Feature Instructions for Use
Apple Inc. One Apple Park Way Cupertino, CA 95014, USA
www.apple.com
INDICATIONS FOR USE
The Irregular Rhythm Notification Feature (IRNF) is a software-only mobile medical application that is intended to be used with Apple Watch. The feature analyses pulse rate data to identify episodes of irregular heart rhythms suggestive of atrial fibrillation (AF) and provides a notification to the user. The feature is intended for over-the-counter (OTC) use. It is not intended to provide a notification of every episode of irregular rhythm suggestive of AF and the absence of a notification is not intended to indicate no disease process is present; rather, the feature is intended to opportunistically display a notification of possible AF when sufficient data is available for analysis. This data is only captured when the user is still. Along with the users risk factors, the feature can be used to supplement the decision for AF screening. The feature is not intended to replace traditional methods of diagnosis or treatment. The feature has not been tested for and is not intended for use in people under 22 years of age. It is also not intended for use in individuals previously diagnosed with AF.
RUSSIA COUNTRY-SPECIFIC INFORMATION
The Irregular Rhythm Notification Feature is not considered a medical device per ROSZDRAVNADZOR (Russian Health Authority).
The Irregular Rhythm Notification Feature is a software-only application that
is intended to be used with Apple Watch. The feature analyses pulse rate data
to identify episodes of irregular heart rhythms suggestive of atrial
fibrillation (AF) and provides a notification to the user. The feature is
intended for over-the-counter (OTC) use. It is not intended to provide a
notification of every episode of irregular rhythm suggestive of AF and the
absence of a notification is not intended to indicate no disease process is
present; rather, the feature is intended to opportunistically display a
notification of possible AF when sufficient data is available for analysis.
This data is only captured when the user is still. Along with the users risk
factors, the feature can be used to supplement the decision for AF screening.
The feature is not intended to replace traditional methods of diagnosis or
treatment.
The feature has not been tested for and is not intended for use in people
under 22 years of age. It is also not intended for use in individuals
previously diagnosed with AF.
USING THE IRREGULAR RHYTHM NOTIFICATION FEATURE
Setup/Onboarding
- The Irregular Rhythm Notification Feature is compatible with Apple Watch Series 3, Series 4, Series 5, Series 6, Series 7 and SE. For region availability and device compatibility for the IRNF, please visit https://support.apple.com/HT208931
- Update Apple Watch and iPhone to latest OS.
- Open the Health app on your iPhone and select Browse.
- Navigate to Heart, then select Irregular Rhythm Notifications.
- Follow the onscreen instructions and complete the onboarding procedure.
- You may exit onboarding at any time by tapping Cancel.
Receiving a Notification
- Once the feature is turned on, you will receive a notification if the feature identified a heart rhythm suggestive of AF and confirmed it on multiple readings.
- If you have not been diagnosed with AF by a medical practitioner, you should discuss the notification with your doctor.
- All data collected and analyzed by the Irregular Rhythm Notification Feature is saved to the Health app on your iPhone. If you choose to, you can share that information by exporting your health data in the Health app.
- New data cannot be collected once your Apple Watch storage is full. You should free up space by deleting unwanted apps, music or podcasts. You can check your storage usage by navigating to the Apple Watch app on your iPhone, tapping My Watch, tapping General, then tapping Storage.
SAFETY AND PERFORMANCE
The performance of the Irregular Rhythm Notification Feature (IRNF) was
extensively tested in a clinical study of 573 participants aged 22 and older
with a mix of diagnosed AF and no known history of AF. Study demographic
characteristics are summarized in the table below:
IRNF 2.0 Clinical Study Subject Demographics
Age Group
<55 123 (21.5%)
=55 to <65 140 (24.4%)
=65 310 (54.1%)
Sex
Male 286 (49.9%)
Female 287 (50.1%)
Ethnicity
Hispanic or Latino 38 (6.6%)
Non-Hispanic or Latino 535 (93.4%)
Race
White 502 (87.6%)
Black or African American 57 (9.9%)
Other 14 (2.4%)
Enrolled subjects wore an Apple Watch and a reference electrocardiogram (ECG) patch concurrently for up to 13 days. For those subjects contributing data to the primary endpoint analysis, 32.4% (n=140/432) presented with AF as identified on the reference ECG patch and were included in determining the device sensitivity. Of those, 124 received an IRNF irregular rhythm notification with concordant AF on the ECG patch, and the sensitivity was 88.6%. Of the 292 subjects who did not present with AF on the ECG patch and contributed data to the analysis of device specificity, 290 did not receive a notification. The AF detection specificity was 99.3%. The remaining subjects (n=141/573) either contributed data to only secondary endpoint analyses and/or did not complete the study. These results support the devices effectiveness in detecting AF.
CAUTIONS
The Irregular Rhythm Notification Feature cannot detect heart attacks. If you
ever experience chest pain, pressure, tightness, or what you think is a heart
attack, call emergency services.
The Irregular Rhythm Notification Feature is not constantly looking for AF and
should not be relied on as a continuous monitor. This means the feature cannot
detect all instances of AF, and people with AF may not get a notification.
Apple Watch may be unable to collect data when it is in close proximity to
strong electromagnetic fields (e.g. electromagnetic anti-theft systems or
metal detectors).
A number of factors can impact the ability of the feature to measure your
pulse and detect an irregular rhythm suggestive of AF. These include factors
like motion, hand and finger movements, environmental factors such as ambient
temperature, dark tattoos on the wrist and the amount of blood flow to your
skin (which can be reduced by cold temperatures).
DO NOT wear your Apple Watch during a medical procedure (e.g. magnetic
resonance imaging, diathermy, lithotripsy, cautery and external defibrillation
procedures).
DO NOT change your medication without talking to your doctor.
Not intended for use by individuals under the age of 22.
Not intended for use by individuals previously diagnosed with AF.
Notifications made by this feature are potential findings, not a complete
diagnosis of cardiac conditions. All notifications should be reviewed by a
medical professional for clinical decision-making.
Apple does not guarantee that you are not experiencing an arrhythmia or other
health conditions even in the absence of an irregular rhythm notification. You
should notify your doctor if you experience any changes to your health.
For best results, charge your Apple Watch regularly and make sure it fits
snugly on top of your wrist. The heart rate sensor should stay close to your
skin.
This is a notice to the user and/or patient that any serious incident that has
occurred in relation to the IRNF device should be reported to the manufacturer
(Apple) and the competent authority of the Member State in which the user
and/or patient is established.
SECURITY: Apple recommends that you add a passcode (personal identification number [PIN]), Face ID or Touch ID (fingerprint) to your iPhone and a passcode (personal identification number [PIN]) to your Apple Watch to add a layer of security. It is important to secure your iPhone since you will be storing personal health information on it. Users will also receive additional iOS and watchOS update notifications on their iPhone and Apple Watch, and updates are delivered wirelessly, encouraging rapid adoption of the latest security fixes. See “iOS and watchOS Security Guide”, which describes Apples security practices and is available to all our users. For the iOS and watchOS Security Guide, please visit https://support.apple.com/guide/security/welcome/web.
EQUIPMENT SYMBOLS
Manufacturer
Consult instructions for use
Medical Device
099-30417, Revision B, December 2021
References
- Apple
- Apple Platform Security - Apple Support
- Heart health notifications on your Apple Watch - Apple Support
- Apple
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