Which chromosome is the CFTR gene located on?
Chromosome 7
Mechanism of Ivacaftor?
Potentiates defective G551D CFTR proteins
Wells Criteria for PE
Dvt clinical signs and symp- 3 PE is most likely dx - 3 Heart rate >100 - 1.5 Immobility 3 days or surgery in past 4 weeks - 1.5 Previous PE/DVT - 1.5 Haemoptysis - 1 Malignancy - 1
What is the mechanism of ambrisentan/nose tan/macicentan.
Endothelin receptor antagonist
What class of drug is riociguat a part of?
Guanylate cyclase stimulator
What is the mechanism of selexipag?
Prostacyclin pathway agonists
What hounsfield unit would you expect for malignant nodules?
> 20
In the setting of pulmonary nodules, what are the high risk features for malignancy?
Older age Smoking history Larger nodules Irregular or speculated Upper lobe lesions
What is the most sensitive test for asthma?
Methacholine challenge
What is the most specific test for asthma?
Post bronchodilator reversibility