Lung auscultation site and order

Whenever you feel there is a problem with your lung function, you should go to the hospital in time. Doctors often perform examinations through auscultation. The method of auscultation is mainly to let the patient open his mouth slightly, take a deep breath, and then auscultate each part. The order of auscultation should start from the apex of the lung. In addition, the patient's breathing sounds should also be checked. To understand alveolar breath sounds, bronchoalveolar breath sounds, etc., let's take a look at this aspect.

Lung auscultation site and order

①Auscultation method:

Ask the subject to open his mouth slightly, take a deep breath, and listen to each part for 1 to 2 breathing cycles.

②Auscultation order:

Generally, it starts from the apex of the lung, from top to bottom, from outside to inside, from left to right, from the front chest to the lateral chest and back (the parts are the same as percussion, at least 3 parts should be auscultated in each intercostal space of the front chest and lateral chest, and at least 2 parts in each intercostal space of the posterior chest), and comparative auscultation is performed on the left and right symmetrical parts.

③ Breathing sounds:

A. Bronchial breath sounds: In normal people, this type of breath sounds can be heard in the larynx, suprasternal fossa, and near the 6th and 7th cervical vertebrae and the 1st and 2nd thoracic vertebrae on the back. If bronchial breath sounds are heard in other locations, this is abnormal.

B. Alveolar breath sounds: In a normal person, except for bronchial breath sounds and bronchovesicular sounds, the rest of the lungs have alveolar breath sounds. Increased, weakened or disappeared alveolar breath sounds, prolonged expiratory sounds, and coarsening of breath sounds are all abnormal.

C. Bronchoalveolar breath sounds: This type of breath sound is a mixture of bronchial breath sounds and alveolar breath sounds. In normal people, this breath sound can be heard in the 1st and 2nd intercostal spaces on both sides of the sternum, at the level of the 3rd and 4th thoracic vertebrae in the interscapular area, and in the anterior and posterior parts of the apex of the lungs. If bronchoalveolar breath sounds are heard in other areas, it is abnormal.

④ Rale:

It is an additional sound other than the breath sound. It can be divided into dry rales and moist rales. Normal people cannot hear rales.

⑤ Voice resonance:

Ask the subject to repeat the long "Yi" sound with normal voice intensity. Normally, soft, indistinct sounds can be heard. During the examination, auscultation should be performed symmetrically on both sides of the chest. If enhancement or weakening is found, it is abnormal.

⑥ Pleural friction sound:

The pleural friction sound usually detected by auscultation is in the lower part of the chest at the mid-axillary line. Normal people do not have pleural friction sound.