Tracking Symptoms
30 Symptoms data types have been added to Health Kit this year, they are shown below.
Electrocardiogram (ECG)
ECG samples can now be read as an HKElectrocardiogram:
/// Represents a collection of voltage measurements.
class HKElectrocardiogram: HKSample {
var classification: HKElectrocardiogram.Classification
var symptomsStatus: HKElectrocardiogram.SymptomsStatus
var averageHeartRate: HKQuantity?
var samplingFrequency: HKQuantity?
var number0fVoltageMeasurements: Int
}Here’s the description and documentation reference for such properties:
classification: reports whether if the user is in Atrial fibrillation or not.symptomsStatus: tells us whether the user has any associated a symptom when this ECG was recorded.averageHeartRate: user’s average heart rate during the ECG.samplingFrequency: the watch sample frequency during the ECG.numberOfVoltageMeasurements: the number of measurements that make up this ECG.
If you want individual measurements you have to run the HKElectrocardiogramQuery:
// Query
class HKElectrocardiogramQuery: HKQuery {
public enum Result {
case measurement(HKElectrocardiogram.VoltageMeasurement)
case error(Error)
case done
}
public convenience init(
_ ecg: HKElectrocardiogram,
dataHandler: @escaping (HKElectrocardiogramQuery, HKElectrocardiogramQuery.Result) -> Void
)
}Mobility
New set of mobility types:
walking speed and step length
walking asymmetry and double support percentage
stair ascent and descent speed
six minute walk test
