ABG	Arterial blood gas analysis
ARDS	Acute respiratory distress syndrome
CON	Consolidation
CP	Crazy paving
CRP	C-reactive protein
DLCO	Diffusion of carbon monoxide
FIB	Fibrotic-like alterations
GG	Ground glass
HFNC	Heated humidified high-flow oxygen therapy
CT	Chest computed tomography
ICU	Intensive care unit
IQR	Interquartile range
IV	Invasive ventilation
FEV1	Forced expired volume in the first second of expiration
FiO2	Fraction of inspired oxygen
FVC	Forced vital capacity
K–W	Kruskal–Wallis test
LDH	Lactate dehydrogenase
mMRC	Modified medical research council
PaO2	Arterial partial pressure of oxygen
P/F	PaO2/FiO2 ratio
NIV	Non-invasive ventilation
NV	Normal values
O2T	Oxygen therapy
RV	Residual volume
SD	Standard deviation
ALA	Acute lung alterations
SARS-CoV-2	Severe acute respiratory syndrome coronavirus 2
TLC	Total lung capacity