Exam (elaborations)
NBME CBSE EXAM STUDY GUIDE.
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NBME CBSE EXAM STUDY GUIDE.
Type II pneumocytes - answersurfactant (*lecithin*)
Proliferate after injury
Type I progenitors
*Neonatal Respiratory Distress Syndrome*
Polio live v killed vaccine - answerKilled = Salk = IgG
L...
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©THESTAR EXAM SOLUTIONS 2024/2025
ALL RIGHTS RESERVED.
NBME CBSE EXAM STUDY GUIDE.
Type II pneumocytes - answer✔surfactant (*lecithin*)
Proliferate after injury
Type I progenitors
*Neonatal Respiratory Distress Syndrome*
Polio live v killed vaccine - answer✔Killed = Salk = IgG
Live = Sabin = IgG + IgA
- can be shed in feces
Neonatal Respiratory Distress:
Etiology + Tx - answer✔Maternal DM (*high insulin*)
or C-section (*low cortisol*)
TX: *dexamethasone* before birth
Lung maturity determined with - answer✔Amniocentesis of Phospholipids (*type II
pneumocytes)
L >> S
Type I pneumocytes - answer✔Squamous gas diffusion
Elastase in lungs - answer✔macrophage: *lysosomes*
PMN: *azuronphilic granules*
Elastin stretches and recoils due to - answer✔Lysine interchain crosslinks
air pressure and
intrapleural pressure at FRC - answer✔Air pressure = 0
Intrapleural pressure = -5
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Pulm Vasc Resistance is lowest during - answer✔Exhale of Tidal Volume
Lung Compliance is decreased by - answer✔LHF, pulmonary edema,
pulmonary fibrosis
Lung Compliance is increased by - answer✔emphysema, age
Obesity affects ERV and FRC - answer✔DECREASE
ERV & FRC
Blood flow/min (pulmonary v systemic) - answer✔pulmonary = systemic
Anatomic pulmonary shunting - answer✔Bronchial circulation causes
*decreased PO2 in LA/LV*
than in pulmonary capillaries
More ventilation is at the - answer✔BASE
O2-Hgb dissociation LEFT shift - answer✔basic, cold, low 2,3 BPG
low pO2 (compensatory erythrocytosis)
O2-Hgb dissociation RIGHT shift - answer✔low pH, high 2,3BPG, high T
HOT, ACIDIC
CO2 transport to lungs - answer✔*carbonic anhydrase*
Cl shift
*Haldane*: CO2 released to lung
(*Bohr*: O2 release to tissue)
CO poisoning causes - answer✔carboxyhemoglobin
no affect on PaO2
Cyanide poisoning causes - answer✔lactic acidosis
How to treat cyanide poisoning - answer✔*Amyl nitrite* --> Methemoglobin
THEN *Thiosulfate* (hydroxycobalamin)
Normal A-a gradient - answer✔5-15
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Hypoventilation: Heroin OD or high altitude
Increased A-a gradient - answer✔*Diffusion impairment* (fibrosis)
*R-L shunt* (aspiration, ARDS)
*V/Q mismatch* (pulmonary edema
AT --> AT II
where and how - answer✔ACE
(- high in sarcoidosis)
In small pulmonary bV
C5a induces what - answer✔PMN influx (ie: in lungs)
Korotkoff sound - answer✔BP cuff - appear and disappear
in inflation/deflation
Pulsus Paradoxus - answer✔10mmHg difference in
Korotkoff sound
Pulsus Paradoxus occurs in - answer✔Cardiac Tamponade
Kussmaul sign - answer✔JVP rises *during inspiration*
Constrictive Pericardiditis
Restrictive/Interstitial Lung Disease:
A-a, FVC, FEV1, EFR - answer✔Airway widening due to *radial traction* from fibrosis
*increase Aa*
decreased FVC & FEV1
*Increased EFR*
Sarcoidosis - answer✔*Th1 *noncaseating granulmona
bilateral hilar adenopathy
increased *ACE*
increased IL2, IFNg
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1-a-hydroxylase in macrophages: vit D --> *HyperCa*
Hyper Ca causes - answer✔stones, thrones, groans, psych overtones
1-a-hydroxylase in macrophages - answer✔PTH independent conversion of
Calcifediol to *calcitriol* (bioactive Vit D)
Vit D --> Hyper Ca
Idiopathic pulmonary fibrosis - answer✔*Honeycomb* pattern
loss of Type 1 pneumocytes
*hyperplasia Type II* pneumocytes
Goodpasture - answer✔HS II
Auto-Ab against BM destroys lung alveoli (*restrictive*) and renal glomeruli
Obstructive Lung Disease - answer✔DECREASED FEV1, Decreased FVC
increased RV, FRC, TLC
**different shape
COPD - answer✔PMN, mo, CD8
*V/Q mismatch:* O2 induced hypercapnia;
physio dead space
Myeloperoxidase causes - answer✔Green sputum/pus
Do not give O2 supplement to - answer✔COPD patient
Decreased stimulation of
*carotid bodies* = decreased RR
TX COPD with - answer✔*Fluticasone* (glucocorticoid)
inhibit cellular reaction
a1-antitrypsin deficiency - answer✔Serine protease inhibitor
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