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# HKElectrocardiogramQuery.Result

Partial results for an electrocardiogram query.

```
enum Result
```

## Overview

The query returns a [`HKElectrocardiogramQuery.Result.measurement(_:)`](/documentation/HealthKit/HKElectrocardiogramQuery/Result/measurement(_:)) result for each voltage measurement, followed by a [`HKElectrocardiogramQuery.Result.done`](/documentation/HealthKit/HKElectrocardiogramQuery/Result/done) result.

## Topics

### Results

[`case measurement(HKElectrocardiogram.VoltageMeasurement)`](/documentation/HealthKit/HKElectrocardiogramQuery/Result/measurement(_:))

A single voltage measurement.

[`case done`](/documentation/HealthKit/HKElectrocardiogramQuery/Result/done)

The query has finished returning voltage measurements.

[`case error(any Error)`](/documentation/HealthKit/HKElectrocardiogramQuery/Result/error(_:))

An error occurred while accessing the voltage measurements.


---

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