Wheezing

Introduction The wheezing sound is also called the dry sound, and the wheezing sound is actually a special expression type in the dry voice. Wheezing sounds when bronchial asthma attacks. At this time, in addition to a wide range of bronchioles, if accompanied by swelling of the bronchioles and secretions in the lumen, the intensity of the wheezing sound is greater. Clinically, extensive and obvious wheezing is one of the important signs for the diagnosis of bronchial asthma and asthmatic chronic bronchitis.

Cause

The appearance of wheezing is mainly due to the extensive bronchospasm in the lungs. When exhaling, the airflow through the narrow bronchioles produces a pathological breath sound that is most pronounced during exhalation.

The wheezing sound is characterized by high pitch, and has a musical sound like a metal tremor, which lasts for a long time and is obviously obvious when exhaling and basically disappears when inhaling. This pathological breath sound can also occur when ventilation is caused by other diseases. Such as bronchial foreign body, endobronchial tuberculosis, abrupt sounds are often found during auscultation. However, this wheezing sound is generally limited to one side of the lung or only in a certain part of the occlusion, and rarely exists on both sides. Wheezing can also occur during episodes of cardiogenic asthma, but this wheezing sound exists both during inhalation and exhalation, and prolonged expiration time is not as pronounced as in bronchial asthma.

an examination

Related inspection

Cardiopulmonary exercise test (CPET) fiberoptic bronchoscopy general radiography sputum cytology sputum immunological examination

In the onset of bronchial asthma, wheezing sounds are inevitable. In addition to the wide range of bronchioles, if the bronchiole mucosa is swollen and the secretions in the lumen are retained, the intensity of the wheezing sound is greater. Clinically, extensive and obvious wheezing is one of the important signs for the diagnosis of bronchial asthma and asthmatic chronic bronchitis. The wheezing sound is characterized by high pitch, and has a musical sound like a metal tremor, which lasts for a long time and is obviously obvious when exhaling and basically disappears when inhaling.

This pathological breath sound can also occur when ventilation is caused by other diseases. Such as bronchial foreign body, endobronchial tuberculosis, abrupt sounds are often found during auscultation. However, this wheezing sound is generally limited to one side of the lung or only in a certain part of the occlusion, and rarely exists on both sides. Wheezing can also occur during episodes of cardiogenic asthma, but this wheezing sound exists both during inhalation and exhalation, and prolonged expiration time is not as pronounced as in bronchial asthma.

Differential diagnosis

The dry and wheezing sounds have similarities in concept, but there are also differences:

The voice is generally divided into two categories: dry voice and wet rake. The dry voice can be divided into arpeggio, flying arrow, flute or wheezing according to the pitch. Occurred in the larger bronchus, known as snoring, mostly formed by vibrating secretions in the trachea, characterized by low pitch and loudness; occurs in smaller bronchial, called "beep" or "flying arrow" "It is characterized by sharp sound and high pitch; when the extensive bronchioles in the lungs are paralyzed, it can produce a wheezing sound in the lungs." Therefore, the wheezing sound is actually a special expression type in the dry voice.

In the onset of bronchial asthma, wheezing sounds are inevitable. In addition to the wide range of bronchioles, if the bronchiole mucosa is swollen and the secretions in the lumen are retained, the intensity of the wheezing sound is greater. Clinically, extensive and obvious wheezing is one of the important signs for the diagnosis of bronchial asthma and asthmatic chronic bronchitis.

The wheezing sound is characterized by high pitch, and has a musical sound like a metal tremor, which lasts for a long time and is obviously obvious when exhaling and basically disappears when inhaling. This pathological breath sound can also occur when ventilation is caused by other diseases. Such as bronchial foreign body, endobronchial tuberculosis, abrupt sounds are often found during auscultation. However, this wheezing sound is generally limited to one side of the lung or only in a certain part of the occlusion, and rarely exists on both sides. Wheezing can also occur during episodes of cardiogenic asthma, but this wheezing sound exists both during inhalation and exhalation, and prolonged expiration time is not as pronounced as in bronchial asthma.

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