A quantity sample type that measures the user’s systolic blood pressure.
- iOS 8.0+
- Mac Catalyst 13.0+
- watchOS 2.0+
Systolic blood pressure measures the maximum blood pressure during each heart beat. When recording blood pressure, combine systolic and diastolic samples into a single correlation object (described in
HKCorrelation). These samples use pressure units (described in
HKUnit) and measure discrete values (described in