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Lung Sounds Resulting from Bronchial Constriction

Question

• Which of the following lung sounds would most likely result from bronchial constriction?

Options

• Stridor

  • Defined as a high-pitched, wheezing sound caused by disrupted airflow. Often associated with upper airway obstruction.

  • Commonly heard during inspiration but can also occur during expiration.

• Rhonchi

  • Described as low-pitched, snoring-like sounds that occur due to the blockage of large airways by mucus or other obstructions.

  • Typically occur during expiration, and may clear with coughing.

• Rales (or crackles)

  • Characterized by brief, discontinuous lung sounds that resemble bubbling or clicking.

  • Associated with fluid in the small airways, resulting in intermittent sounds upon inhalation and exhalation.

• Wheezing

  • Defined as a high-pitched, whistling sound produced during airflow through narrowed airways, typically during expiration.

  • Most often associated with asthma, bronchospasm, or constriction of the bronchial tubes.

Likely Result from Bronchial Constriction

• The most likely lung sound resulting from bronchial constriction is Wheezing.

  • This is due to the narrowing of the air passages, which increases airflow resistance and causes a whistling sound as air moves through constricted bronchi.

Summary of Key Terms

• Bronchial Constriction: Refers to the tightening of muscles around the bronchial tubes that leads to narrowed airways and increased resistance to airflow.

• Lung Sounds: Indicative of various pulmonary conditions and can provide important diagnostic information regarding airway status and lung function.