Question

continuous, high - pitched whistling sounds, usually during expiration, are called:
a stridor.
b rhonchi.
c wheezes.
d rales.
e croup.

Explanation:

To solve this, we analyze each option:

• Option A (stridor): Stridor is a high - pitched sound, but it is more associated with upper airway obstruction and can occur during inspiration or expiration, and it's not typically described as a "whistling" sound in the context of this question's description (usually during expiration for the sound in question here).
• Option B (rhonchi): Rhonchi are low - pitched, rattling or gurgling sounds, often caused by secretions in the larger airways. They are not high - pitched whistling sounds.
• Option C (wheezes): Wheezes are continuous, high - pitched whistling sounds that occur when air flows through narrowed small airways. They are most commonly heard during expiration, which matches the description in the question.
• Option D (rales): Rales (also called crackles) are discontinuous, non - musical sounds, like popping or crackling, usually caused by fluid in the alveoli. They are not high - pitched whistling sounds.
• Option E (croup): Croup is a clinical condition that causes a barking cough and stridor, mainly in children. It is not a type of breath sound that fits the description of continuous, high - pitched whistling during expiration.

Answer:

C. wheezes