Question:medium
Inspiratory stridor is found in what kind of lesions?
Inspiratory stridor is found in what kind of lesions?
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Inspiratory equals above the glottis; expiratory equals lower trachea.
Updated On: Jun 23, 2026
- Supraglottic
- Subglottic
- Tracheal
- Bronchus
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The Correct Option is A
Solution and Explanation
Step 1: Localise the noise by its timing. Stridor that is heard mainly while breathing IN is the clue here.
Step 2: The extrathoracic upper airway, especially the supraglottis, is most easily narrowed during inspiration because the surrounding pressure pulls these soft structures inward. Hence a lesion here gives an inspiratory pattern.
Step 3: Move down the airway and the pattern changes. Lesions of the lower trachea and bronchi (intrathoracic) worsen on expiration, so they produce an expiratory stridor; a tight glottic or subglottic narrowing tends to be biphasic.
Step 4: Matching the inspiratory phase to its level, the answer is the supraglottic region.\[\boxed{\text{Supraglottic}}\]
Step 2: The extrathoracic upper airway, especially the supraglottis, is most easily narrowed during inspiration because the surrounding pressure pulls these soft structures inward. Hence a lesion here gives an inspiratory pattern.
Step 3: Move down the airway and the pattern changes. Lesions of the lower trachea and bronchi (intrathoracic) worsen on expiration, so they produce an expiratory stridor; a tight glottic or subglottic narrowing tends to be biphasic.
Step 4: Matching the inspiratory phase to its level, the answer is the supraglottic region.\[\boxed{\text{Supraglottic}}\]
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