This document appears to be a medical record discussing Holter monitoring. It mentions reading and interpreting Holter data and includes the name of a doctor, date, and some medical abbreviations. However, there is not enough contextual information to provide a more detailed summary.

1. Reading and interpreting Holter
Dr Ihab suliman
29/1/2023

19. WPW AF

20. ??

21. ?? ??

35. 2613879