What basic respiratory murmur is most often sounded at pulmonary emphysema?Ответы(один ответ)1  D) Rough respiration2  E) Mixed bronchus-vesicular respiration.3  A) Weakened vesicular respiration4  B) Amphoric respiration5  C) Bronchial respiration

The basic respiratory murmur most often heard in pulmonary emphysema is A) Weakened vesicular respiration.

Here's why:

Pulmonary emphysema is a type of chronic obstructive pulmonary disease (COPD) characterized by long-term, poor airflow and shortness of breath. It primarily involves the destruction of the lung's alveoli, the tiny air sacs where oxygen and carbon dioxide are exchanged during the process of breathing.

In normal lungs, the small airways collapse when you exhale, trapping some air in the alveoli. But in emphysema, the airways are so weak that they collapse earlier during exhalation, trapping even more air. The trapped air causes the alveoli to enlarge, creating larger but fewer lung sacs. Fewer sacs mean less area for oxygen and carbon dioxide exchange, leading to difficulty breathing and less oxygen in the blood.

Vesicular respiration refers to the normal sound of respiration heard over most of the lung field during auscultation (listening with a stethoscope). It is characterized by a soft, rustling sound that is louder during inspiration and softer during expiration.

In pulmonary emphysema, the vesicular respiration is weakened or diminished. This is because the destruction and enlargement of the alveoli and the early collapse of the small airways reduce the amount of air that can flow in and out of the lungs. As a result, less air movement through the bronchial tubes leads to a decrease in the intensity of the breath sounds. Hence, weakened vesicular respiration is the basic respiratory murmur most often heard in pulmonary emphysema.