Table 1: Classification of pulmonary adverse event by grade.

Adverse eventGrade IGrade IIGrade IIIGrade IV

Respiratory distressMild symptomsOxygen therapy or medications requiredEndotracheal intubationTracheostomy required
Pleural effusionAsymptomaticDiuretics requiredThoracentesis requiredCompromised, chest tube insertion
PneumoniaMinimal symptomsAntibiotics and respiratory therapyBronchoscopyIntubation required