ECLS
extracorporeal (outside the body) life support;  encompasses ECMO and ECCO2R

ECMO
extracorporeal (outside the body, heart-lung machine) membrane oxygenation

ECCO2R
extracorporeal (outside the body) CO2 removal

EMDR
eye movement desensitization and reprocessing

ERCP
endoscopic retrograde cholagio prancreatography

ET
endotracheal tube

F
no information

FEV1
forced expiratory volume in one second

FiO2
fractional concentration of inspired oxygen

FRC
functional residual capacity

G
no information