05 February 2021
: Case report 
Intermittent High-Frequency Percussive Ventilation Therapy in 3 Patients with Severe COVID-19 Pneumonia
Unusual clinical course, Challenging differential diagnosis, Unusual or unexpected effect of treatment
Sergey P. Marchenko1BEF*, Ecaterina Scarlatescu2ABEF, Paul Robert Vogt3AEFG, Alexey Naumov1ABDEF, Sergey Bognenko1ABCDEFDOI: 10.12659/AJCR.928421
Am J Case Rep 2021; 22:e928421
Figure 1. Timeline of patients from hospital admission to discharge. (A) Case 1; (B) Case 2; (C) Case 3. HFPV – high-frequency percussive ventilation; DOD – days from disease onset.