- Physical examination including checking for heart regularity and rate
was done on daily basis.
- Routine ECG was performed on admission and whenever new cardiac
symptoms appeared or an arrhythmia was suspected on physical examination
or telemetry.
- Laboratory examination was not done routinely but on clinical basis
for patients with cardiac symptoms, general deterioration and before
treatment with Hydroxychloroquine and/or Azithromycin. .
- 24-hour Holter monitoring was performed in a minority of patients,
primarily those with evidence of cardiac injury, abnormal ECG on
admission, or those with significant illness.