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# HKElectrocardiogram.Classification.inconclusiveHighHeartRate

An unclassifiable sample caused by a rapid heart rate.

```
case inconclusiveHighHeartRate
```

## Discussion

The [`HKAppleECGAlgorithmVersion.version1`](/documentation/HealthKit/HKAppleECGAlgorithmVersion/version1) algorithm can categorize heart rates below 120 BPM. [`HKAppleECGAlgorithmVersion.version2`](/documentation/HealthKit/HKAppleECGAlgorithmVersion/version2) can categorize heart rates up to 150 BPM.

---

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