Week 3 Applied Respiratory Physiology Flashcards
What does Reynalds number do?
Predicts if flow will stay laminar or turbulent
Low = likely laminar
High = likely turbulant
What is Reynalds nymber equation?
density of fluid x fluid velocity x diameter of tube
/ fluid viscosity
What is group?
Barking cough/stridor, starts as non specific viral illness
What is the peak incidence of croup?
6m-3y
How can croup severity be measured?
Westley croup score
What are retractions in croup?
Patient generates more negative pressure against obstruction and chest gets sucked in
What is the treatment of croup?
Steroids or adrenaline nebuliser - oral dexamethasone
What are the differentials of croup?
Foreign body
Epiglottitis
Tracheitis
HAE
Abscess
How is asthma assessed?
Peak flow - 3x record best
ABGs
What is status asthmaticus?
Medical emergency, an extreme form of asthma exacerbation characterized by hypoxemia, hypercarbia, and secondary respiratory failure
How do COPD chronic retainers compensate for high CO2?
High bicarbonate
What is hypoxic drive?
When CO2 is high, O2 gives the drive to breathe
