<https://www.healthsoothe.com/ashman-phenomenon/#richSnippet>
<http://schema.org/description>
"When the ventricles constrict, the process is known as ventricular depolarization, which raises the pressure within the ventricles. This ventricular depolarization varies when there is a change in the QRS cycle interval, which results in the Ashman phenomenon."
<https://www.healthsoothe.com/ashman-phenomenon/>