Multiple choice

What is the most acute effect of smoking cessation?

  1. Shift of oxyhaemoglobin curve to the right

  2. Increased ciliary function

  3. Decreased mucous production

  4. Decreased incidence of post operative pneumonia
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A Correct answer
Explanation

One effect of nicotine is constriction of the terminal bronchioles of the lungs, which increases the resistance of airflow into and out of the lungs. Second, the irritating effects of the smoke itself cause increased fluid secretion into the bronchial tree, as well as some swelling of the epithelial linings.

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