Cystic Fibrosis Flashcards
Cystic Fibrosis
Autosomal recessive
Abnormal chloride channels (CFTR) in lumInal surface lead to increased reabsorption of Na and H20 leading to increased viscosity of airway secretions
Complications
Congenital cause of bronchiectasis Tenacious sputum Biliary obstruction Pancreatic dysfunction Infertility for males
Signs
Recurrent chest infections in childhood, failure to thrive, bronchiectasis
Symptoms
Clubbing
Purulent sputum
Central cyanosis
Bilateral coarse crackles
Testing
Sweat test
Del508 genetic test
Immunoreactive trypsin assay
Management
Antibiotics Postural drainage Pancreatic supplements Low fat diet Bronchodilators Heart-lung transplant
Epidemiology
1/25 carry gene
Bronchiectasis <40 years
screen for CF
Genetic causes
Del508
G551D, causes nonfunctioning channel
Ivacaftor
Could be solution
Improves CFTR flow
EXPENSIVE
Exacerbation management
Antibiotics
Physiotherapy
Hydration
Increased dietary input
OHPAT
Outpatient home parenteral antibiotic therapy