# Measuring ECG with Kardi Ai

{% hint style="warning" %}
To record and process the measurement data, it is necessary to have<img src="/files/BOujAYaBQdHhlziIa5wt" alt="" data-size="line"> **Bluetooth enabled** and have an active <img src="/files/vrD57y9nb5dqqmmTCSLe" alt="" data-size="line"> **internet connection**, either via **cellular** or **Wi-Fi**.
{% endhint %}

> **When to Measure EKG**
>
> * You can perform measurements **anytime** - both when experiencing health issues and as a preventive measure against heart disease.
> * **We recommend** measuring at least **3 times a week**.
> * Each measurement should last **at least 3 hours**.
> * The total duration of your weekly measurements should exceed 7 hours.
> * **Always measure when experiencing symptoms.**
> * At least **once a week**, we recommend conducting a **measurement during sleep** (overnight).

{% hint style="danger" %}
**The maximum duration of a single EKG recording is 24 hours.**

* To prevent skin irritation, allow the skin to rest.
* The evaluation of the recording takes place after the recording is completed, and processing longer recordings may take several minutes.
  {% endhint %}

{% hint style="info" %}
To ensure proper data transmission from the chest strap to your mobile phone, keep the phone in **close proximity to the chest strap** during the recording.
{% endhint %}

<figure><img src="/files/FZhXyI6qGuk9nshP8jp6" alt="" width="188"><figcaption></figcaption></figure>

### Measurement Procedure

1. **Put on the Kardi Ai chest strap**\
   The chest strap does not need to be turned on; it activates automatically 10 seconds after being placed on the body.

   For proper fastening instructions, proceed to [How to Put on the Chest Strap](/en/setting-up-and-using-kardiai/how-to-put-on-the-chest-strap.md).
2. **Start the Kardi Ai app** <img src="/files/zzPQbuThPSqv8jmzbQV0" alt="" data-size="line"> **on your phone.**

   Ensure your phone is sufficiently charged to avoid interrupting the recording.
3. **Start the Measurement**

   In the **Kardi Ai** <img src="/files/zzPQbuThPSqv8jmzbQV0" alt="" data-size="line"> app , click on the **New Recording** tab, follow the instructions in the app, and start the EKG recording.
4. **Select Health Condition (Optional)**

   Choose the health condition that will be saved with the current recording. The default setting is **Routine Check**. To change it, click the arrow and select from the list of options.
5. **Ongoing EKG Recording**

   After pressing the **Start EKG Recording** button, the **Kardi Ai** <img src="/files/zzPQbuThPSqv8jmzbQV0" alt="" data-size="line"> app will begin measuring the EKG. The app displays a **live feed of your EKG** and **heart rate**.
6. **Recording Health Issues (Optional)**\
   If you experience health issues during the measurement, mark them using the **Record Health Issues** button. Marking health issues does not change the selected health condition from step 4. The marked health issues will be visible in the EKG recording report.
7. **End the Recording**

   To end the recording, press the **Stop EKG Recording** button.\
   :warning: <mark style="background-color:yellow;">If you do not end the recording using the</mark> <mark style="background-color:yellow;">**Stop Recording**</mark> <mark style="background-color:yellow;">button in the app, the measurement data will be lost.</mark>

{% hint style="info" %}
After completing each EKG measurement, **detach at least one electrode** from the chest strap to extend battery life.
{% endhint %}

#### Recording Overview

You can find your EKG recording in the **Recordings** tab. A gray bar with a circle next to the recording indicates that the recording is being evaluated.

{% hint style="success" %}
After the evaluation, a colored bar will appear next to your recording according to our traffic light system, and the evaluation will be ready.

***

For more information about the traffic light system for evaluated recordings, proceed to [Measurement Evaluation Traffic Light](/en/ecg-recordings-and-analysis/measurement-evaluation-traffic-light.md).
{% endhint %}

{% hint style="danger" %}
If you feel unwell in any way, consider consulting a doctor immediately, regardless of the Kardi Ai measurement results. An ECG recording from the chest strap cannot detect a myocardial infarction or generally deteriorating blood supply to the heart. A negative finding does not indicate the reason for any chest pain.
{% endhint %}

***

{% hint style="success" %}
**Need help?**\
Contact Kardi Ai customer support\
☎️ [**+420 779 998 100**](tel:+420779998100)\
✉️ [**support@kardi.ai**](mailto:support@kardi.ai)
{% endhint %}


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