| Abbreviations | Meaning |
 | LVRS | Lung Volume Reduction Surgery |
 | CAPRI | Cardiopulmonary Research Institute |
 | PVP | Pulmonary Venous Pressure |
 | PAIVS | Pulmonary Atresia With Intact Ventricular Septum [collaborative Study] |
 | PTED | Pulmonary Thromboembolic Disease |
 | PF | Pulmonary Factor |
 | RL | Lung Resistance |
 | H&L | Heart And Lung [machine] |
 | TB | Terminal Bronchus |
 | TPG | Transmembrane Potential Gradient; Transplacental Gradient; Transpulmonary Gradient; Tryptophan Peptone Glucose [broth] |
 | PVRI | Pulmonary Vascular Resistance Index |
 | CLL | Cow Lung Lavage |
 | LIFE | Lung Imaging Fluorescence Endoscope |
 | MAPCA | Major Aorto-pulmonary Collateral Artery |
 | PVC | Pulmonary Venous Capillaries |