Type Property


A category sample type for irregular heart rhythm events.


static let irregularHeartRhythmEvent: HKCategoryTypeIdentifier


The system creates irregularHeartRhythmEvent samples whenever Apple Watch produces an irregular rhythm notification. For more information, see Heart rate notifications on your Apple Watch.

The irregular rhythm samples are read-only. Use this identifier to request permission to read these samples; however, you can’t request authorization to share them, and you can’t save new irregular rhythm events to the HealthKit store.

These samples have a value of HKCategoryValue.notApplicable.

See Also

Vital Signs

static let lowHeartRateEvent: HKCategoryTypeIdentifier

A category sample type for low heart rate events.

static let highHeartRateEvent: HKCategoryTypeIdentifier

A category sample type for high heart rate events.