NBME CBSE REAL EXAM 200 QUESTIONS AND ANSWERS LATEST (usmle step 1) MEDICAL EXAMINATION
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NBME CBSE REAL
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NBME CBSE REAL
NBME CBSE REAL EXAM 200 QUESTIONS AND ANSWERS LATEST (usmle step 1) MEDICAL EXAMINATION
NBME CBSE REAL EXAM 200 QUESTIONS AND ANSWERS LATEST (usmle step 1) MEDICAL EXAMINATION
NBME CBSE REAL EXAM 200 QUESTIONS AND ANSWERS LATEST (usmle step 1) MEDICAL EXAMINATION
NBME CBSE REAL EXAM 200 QUEST...
NBME CBSE REAL EXAM 200 QUESTIONS AND
ANSWERS LATEST 2024-2025 (usmle step 1) MEDICAL
EXAMINATION
Type II pneumocytes
ans:>surfactant (*lecithin*)
Proliferate after injury
Type I progenitors
*Neonatal Respiratory Distress Syndrome*
Polio live v killed vaccine
ans:>Killed = Salk = IgG
Live = Sabin = IgG + IgA
- can be shed in feces
Neonatal Respiratory Distress:
Etiology + Tx
ans:>Maternal DM (*high insulin*)
or C-section (*low cortisol*)
TX: *dexamethasone* before birth
Lung maturity determined with
ans:>Amniocentesis of Phospholipids (*type II pneumocytes)
L >> S
Type I pneumocytes
ans:>Squamous gas diffusion
,Elastase in lungs
ans:>macrophage: *lysosomes*
PMN: *azuronphilic granules*
Elastin stretches and recoils due to
ans:>Lysine interchain crosslinks
air pressure and
intrapleural pressure at FRC
ans:>Air pressure = 0
Intrapleural pressure = -5
Pulm Vasc Resistance is lowest during
ans:>Exhale of Tidal Volume
Lung Compliance is decreased by
ans:>LHF, pulmonary edema,
pulmonary fibrosis
Lung Compliance is increased by
ans:>emphysema, age
Obesity affects ERV and FRC
ans:>DECREASE
ERV & FRC
Blood flow/min (pulmonary v systemic)
ans:>pulmonary = systemic
Anatomic pulmonary shunting
ans:>Bronchial circulation causes
*decreased PO2 in LA/LV*
than in pulmonary capillaries
Restrictive/Interstitial Lung Disease:
A-a, FVC, FEV1, EFR
ans:>Airway widening due to *radial traction* from fibrosis
*increase Aa*
decreased FVC & FEV1
*Increased EFR*
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