---
title: HKElectrocardiogram.Lead
framework: healthkit
role: symbol
role_heading: Enumeration
path: healthkit/hkelectrocardiogram/lead
---

# HKElectrocardiogram.Lead

The lead used to record a voltage measurement.

## Declaration

```swift
enum Lead
```

## Topics

### Leads

- [HKElectrocardiogram.Lead.appleWatchSimilarToLeadI](healthkit/hkelectrocardiogram/lead/applewatchsimilartoleadi.md)

### Initializers

- [init(rawValue:)](healthkit/hkelectrocardiogram/lead/init(rawvalue:).md)

## Relationships

### Conforms To

- [BitwiseCopyable](swift/bitwisecopyable.md)
- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Accessing Voltage Measurements

- [numberOfVoltageMeasurements](healthkit/hkelectrocardiogram/numberofvoltagemeasurements.md)
- [samplingFrequency](healthkit/hkelectrocardiogram/samplingfrequency.md)
- [HKElectrocardiogram.VoltageMeasurement](healthkit/hkelectrocardiogram/voltagemeasurement.md)