# Toggling events in the event manager.
**URL:** https://discourse.kitware.com/t/toggling-events-in-the-event-manager/1214
**Category:** Pulse Physiology Engine
**Created:** [February 18, 2024, 2:40pm UTC](https://discourse.kitware.com/t/toggling-events-in-the-event-manager/1214 "2024-02-18T14:40:00Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@NucleusDev](https://discourse.kitware.com/u/NucleusDev)
#### Post date: [February 18, 2024, 2:40pm UTC](https://discourse.kitware.com/t/toggling-events-in-the-event-manager/1214/1 "2024-02-18T14:40:00Z")
I guess this question is specifically for Cardiac Arrest for now but i’d like to know if the same applies to other events.
Lets say i turn on the cardiac arrest event on the patient would it make the HR go to 0? If not is there a way i can set up the patient to start with a CA
if yes does this also apply to other events in the event manager ?
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### Author:  [@abray](https://discourse.kitware.com/u/abray)
#### Post date: [February 18, 2024, 3:16pm UTC](https://discourse.kitware.com/t/toggling-events-in-the-event-manager/1214/2 "2024-02-18T15:16:43Z")
If you apply an `Arrhythmia` action with `Asystole`, the HR will drop to 0
Use the [Pulse Explorer](https://gitlab.kitware.com/physiology/explorer/-/wikis/home) to start with the StandardMale state and apply this action, let it run for a bit and Serialize the Pulse state for use in your application.
Notice, this is going to drop your MAP into/below the 30s.
You can actually perform CPR in the Explorer if you set the Chest Compression Action to something like the following: Then you will need to keep clicking the Apply button at the proper compression timing to keep the MAP in the 40s
