What is characterized by a whistling sound due to partial obstruction in the airways?

• A. Rhochi
• B. Stridor
• C. Wheezing
• D. Rale

Answer: (C)

The correct choice is wheezing, which is characterized by a high-pitched, whistling sound that occurs during breathing, particularly during expiration. This sound is produced when air flows through narrowed or obstructed airways, which can be a result of conditions such as asthma, chronic obstructive pulmonary disease (COPD), or bronchitis.

Wheezing indicates that there is a partial blockage in the air passages, which restricts airflow and creates turbulence, leading to the distinctive whistling noise. This symptom is often a key indicator for healthcare providers assessing respiratory distress or the severity of airway obstruction in patients. Understanding this term is essential for effective communication and diagnosis in clinical settings.

The other terms, while related to respiratory sounds, describe different phenomena. Rales refer to crackling or bubbling sounds often associated with conditions like pneumonia or heart failure, while stridor is a harsh, high-pitched sound indicative of severe airway obstruction, usually in the upper airway, and rhonchi are low-pitched, snoring sounds associated with airway obstruction typically caused by mucus.