From custo diagnostic version 4.6.11, 5.0.7, 5.1.1 and 5.2.0, custo med built in an additional feature that gives you the possibility to adjust the sensitivity of the QRS-trigger output. ( The QRS trigger output is an option that needs a QRS-Trigger cable and an update of the license, in case the end-user wouldn't have it already)
Under normal conditions, what means the ECG has an average amplitude and not much noise or no noise on the ECG, the QRS-trigger works properly. In some occasions when the amplitude of the ECG is very small the trigger might, every now and then, miss a R-top. In case of using the trigger pulse for a CT camera or Blood pressure device this might affect the measurement.
To come, also in this occasions, up with a stable trigger, custo med has added the possibility to adjust the gain of the signal that is used to generate the QRS-Trigger.
Instruction for Stress ECG, QRS trigger sensitivity:
The setting is in the service center of custo diagnostic. Under Settings, Belastungs EKG\Intern\QRSTriggerAmplifyPercent. Default the setting is set to 100%. Recommended is to change the sensitivity in a range from 100% up to a maximum of 150%. Otherwise disturbance might be amplified in a way that it could be recognized as a R-top.
Make sure you safe the setting with "Speichern"
After restart of custo diagnostic this feature will take effect.
On the following LINK a short video with the complete instruction. (link: https://oc.customed.de/index.php/s/1KBmmxDZXJ9KbC4)
Instruction for Resting ECG, QRS trigger sensitivity:
For resting ECG this setting can be changed, almost in the same way as in stress ECG. The setting is in the service center of custo diagnostic. Under Settings, Ruhe EKG\Intern\QRSTriggerAmplifyPercent. Default the setting is set to 100%. Recommended is to change the sensitivity in a range from 100% up to a maximum of 150%. Otherwise disturbance might be amplified in a way that it could be recognized as a R-top.
Make sure you safe the setting with "Speichern"
After restart of custo diagnostic this feature will take effect.
Instruction for CPET ECG, QRS trigger sensitivity:
For resting ECG this setting can be changed, almost in the same way as in stress ECG. The setting is in the service center of custo diagnostic. Under Settings, Spiro-Ergometrie\Intern\QRSTriggerAmplifyPercent. Default the setting is set to 100%. Recommended is to change the sensitivity in a range from 100% up to a maximum of 150%. Otherwise disturbance might be amplified in a way that it could be recognized as a R-top.
Make sure you safe the setting with "Speichern"
After restart of custo diagnostic this feature will take effect.