Prioritise drug-induced ILD, then use valve thresholds for aortic stenosis and EBV clues in sore throat assessment.
Hypoxaemia with ground-glass opacities needs a current medicine review.
New hypoxaemia with bilateral ground-glass change deserves priority. Drug-induced ILD can resemble infection, pulmonary embolism or another parenchymal lung process, so the practical gain is a structured medicine history: dose, route, duration and timing against symptom onset, while still covering infection where appropriate.
Aortic stenosis adds a second concrete diagnostic habit: when valve area, Vmax and mean gradient disagree, establish flow state and ejection fraction before labelling severity. Infectious mononucleosis brings the clinic-facing sore throat lesson, especially EBV clues, testing timing and splenic precautions. Carry away one small behaviour: match the imaging, symptom timeline and treatment exposures before closing the differential.
New hypoxaemia with cough, fever and ground-glass change should trigger a careful medicine review. This teaching walks through drug-induced interstitial lung disease, linking timing of exposure, HRCT abnormalities and exclusion of infection, heart failure, autoimmune disease and other ILD causes.
Clinicians facing a systolic crescendo-decrescendo murmur or exertional breathlessness get a focused route through severe aortic stenosis. The key clinical move is to combine symptoms, Vmax, mean gradient, indexed valve area, flow state and ejection fraction before intervention planning.
Adolescents and young adults with sore throat, fatigue and posterior cervical lymphadenopathy need EBV in the differential. The clinically useful details are testing timing, the amoxicillin rash clue, splenomegaly checks, alcohol advice and contact sport restriction.
When new hypoxaemia and bilateral ground-glass change appear, do not close on infection or pulmonary embolism before checking current and recent medicines. Record dose, route, duration and timing, then involve respiratory or the responsible specialty early when a culprit drug is plausible. The drug-induced ILD podcast gives the structured approach.
What makes drug-induced ILD plausible when a patient has new hypoxaemia?
New parenchymal CT change, a plausible medication timeline and exclusion of other causes all matter. The medicine history should include dose, route, duration and timing against symptom onset.
What should not be missed when CT shows bilateral ground-glass opacities?
Check current and recent medicines before narrowing the problem to infection or pulmonary embolism. Cover infection early when the presentation overlaps with acute pneumonitis.
How should discrepant aortic stenosis measurements be approached?
Confirm valve area, determine flow state with stroke volume index, then assess left ventricular ejection fraction. Low-flow low-gradient disease with reduced ejection fraction points to dobutamine stress echocardiography.
.svg)