Which of the following is FALSE concerning airway resistance (R)?

Correct Answer: A

Rationale: Later airway generations don't increase total resistance (A, false). Resistance (R ∝ 1/r^4) peaks in medium airways (bronchi), not terminal bronchioles total cross-sectional area (~70 m^2) cuts R in alveoli (Q16). Large airways dominate normally (B, true). High R lowers FEV1/FVC (C, true, Q8). Elasticity loss and constriction (D, true) raise R (e.g., COPD, asthma). A's error unlike B's norm misreads airflow dynamics, per physiology.

Correct Answer: C

Rationale: Pulmonary infarction (C) embolic necrosis predisposes to lung abscess; tissue death fosters anaerobic infection (e.g., Bacteroides). Pneumococcus type III pneumonia (A) consolidates, rarely necrotizes. Sideroderma (B likely scleroderma misprint) affects vessels, not abscesses. Mitral stenosis (D) causes congestion, not infarction. Regional enteritis (E Crohn's) links to GI, not lungs. Infarction's ischemic damage, often post-embolus, is key in abscess pathogenesis, guiding imaging and antibiotics in chest nursing.

Correct Answer: B

Rationale: Pneumothorax air in pleura links to emphysematous bleb , ruptured subpleural air sacs (e.g., COPD) collapsing lung. Friction rub (A) is pleuritis. CHF (B) causes effusion. Duct rupture (C) is chylothorax. Pseudomonas (D) ties to empyema. Bleb rupture's sudden dyspnea/hyperresonance is key, guiding chest tube insertion in emergency nursing.

Correct Answer: D

Rationale: Prednisone, a corticosteroid, causes psychosis, peptic ulcer, osteoporosis glucocorticoid effects on CNS, gastric mucosa, and bone (e.g., 20% bone loss risk). Myelosuppression (A) fits cytotoxics. Protein defects (B) tie to asparaginase. Neuropathy (C) is vincristine. Cystitis (D) is cytoxan. Prednisone's side effects are key in nursing for steroid tapering and GI protection.

Correct Answer: B

Rationale: Hemophilia typically A (factor VIII) features AHG (antihemophilic globulin) deficiency (B), prolonging aPTT (e.g., >50s), not PT (A factor VII, D). Factor V (C) is unrelated. None' dismisses. VIII deficiency causes joint bleeds, key in nursing for factor replacement and bleeding precaution education.