Pulm 2 Flashcards
Step up therapy in Asthma
SABA –> low-dose ICS-LABA –> medium-dose ICS-LABA –> medium to high dose ICS-LABA + LAMA –> high dose ICS–LABA + oral steroids
P to F calculation
Suppose the pO2 is 90mmHg on 40% oxygen (FIO2 = .40). The P/F ratio = 90 divided by .40 = 225.
P to F interpretation
P/F ratio <300 = acute lung injury or mild ARDS
<200 = moderate ARDS
<100 = severe ARDS
Obstructive, restrictive, and fixed airway obstruction on flow volume loop
See image online
obstructive lung disease diagnosis PFTs
FEV1/FVC less than 70%
treatment of allergic bronchopulmonary aspergillosis
- steroids
- antifungals
allergic bronchopulmonary aspergillosis clinical features
Josh using a huge inhaler + walls made out of asparagus + eosinophil chandelier/aspergillus fumigatus infection can complicate asthma + elevate IgE.
Rhinitis medicamentosa is…
overuse of nasal decongestants
Management of eczema not responding to topical steroids
- topical calcineurin inhibitors (tacrolimus, pimecrolimus)
- dupilumab
treatment of C1 esterase inhibitor deficiency
- bradykinin antagonist
- kallikrein inhibitor
Type 1 drug allergy mechanism + presentation
- IgE mediated
- Immediate (anaphylaxis)
Type 2 drug allergy mechanism + presentation
- antibody mediated
- hemolysis
Type 3 drug allergy mechanism + presentation
- immune complex mediated
- serum sickness
Type 4 drug allergy mechanism + presentation
- T-cell mediated, delayed
- Contact dermatitis, maculopapular drug rash
treatment of morbilloform rash
- topical steroids (systemic steroids if necessary)
Treatment of fixed drug eruption
- self limiting so should resolve on its own
- if not, topical steroid
RSBI calculation
TV (in liters) over RR
Goal RSBI
less than 105
Proper ET tube position in women and men
20-21 cm in women
22-23 in men
management of patient with reduced breath sounds following intubation
- reposition ET tube (likely intubated right mainstream, which is common due to more vertical orientation)
How to differentiate tension pneumo from right mainstem intubation
- tension pneumo = tympany on percussion + tracheal deviation + acute cardiovascular collapse (BP will rapidly drop)
Criteria for extubation
1) RSBI less than 105
2) Normal mental status, following commands
3) Few secretions + strong cough
* absent upper airway lesions
When do patients on vent need to be considered for tracheostomy?
2 weeks roughly
Management of failed SBT
- place on assist control
- continue daily SBTs
RSBI calculation
RR over TV (**expressed in liters)
Cardiac index in hypovolemic shock vs. cardiogenic shock
- slightly reduced in hypovolemic
- substantially reduced in cardiogenic
Wedge pressure in hypovolemic shock vs. cardiogenic shock
- decreased in hypovolemic, increased in cardiogenic shock
Mean RA pressure
4
Mean wedge pressure
9
Mean cardiac index
2.8-4.2
Mean SVR
1,150
Other goals of ARDS management
- low plateau pressure (less than 30)
- early administration of paralytics
ARDS criteria
- bilateral lung opacities + *no signs of cardiac failure or fluid overload
Management of respiratory failure after extubation
Reintubate immediately
Unless COPD –> then can trial BiPaP