Flow capacity determination

Flow rate capacity measurement is one of the best methods for detecting airway obstructive diseases. It can qualitatively and locate the degree of airway obstruction. Bronchiolitis, commonly known as wheezing pneumonia, is mainly caused by respiratory syncytial virus, influenza virus, parainfluenza virus, adenovirus-induced inflammation of the bronchioles, and occurs mostly in infants and young children under 2 years of age. During the measurement, the child was supine, the head was reclined, and the trachea was as straight as possible to reduce the airway resistance of the upper respiratory tract of the child. Cover the nose and mouth with a special nose and mouth mask, do not leak, so as not to affect the test results. Basic Information Specialist classification: Respiratory examination classification: pulmonary function test Applicable gender: whether men and women apply fasting: not fasting Tips: Pay attention to normal eating habits and pay attention to personal hygiene. Normal value Different ages, different occupations and different. Clinical significance Most new spirometers continuously display lung volume and flow rate during forced exhalation. Flow rate checks are particularly useful for determining partial obstruction of the larynx and trachea. Abnormal result Lower airway obstruction, such as bronchial asthma, asthmatic bronchitis, tracheal foreign body and other abnormalities caused by. Airway obstruction in people who need to be examined, such as bronchial asthma and other related symptoms of airway obstruction. High results may be diseases: asthma precautions Forbidden before examination: Pay attention to normal eating habits and pay attention to personal hygiene. Requirements for examination: For example, when the child is lying on his back, the head is reclined, the trachea is stretched as far as possible, and the airway resistance of the upper respiratory tract of the child is reduced. Cover the nose and mouth with a special nose and mouth mask, do not leak, so as not to affect the test results. Inspection process Under calm breathing, the pressure flow rate experienced by the gas flow meter during the breathing process changes. The computer processes the input signal with the vertical axis as the flow rate and the horizontal axis as the capacity, and the image and data of the tidal flow rate capacity curve are obtained. Pulmonary function was measured in tidal conditions, and the tidal expiratory flow rate capacity curve (TBFV) was continuously recorded to reflect the size and airway function of children with bronchiolitis. The specific operation method is as follows: pulmonary function test is performed on children who have been diagnosed with bronchiolitis. Before the measurement, if the respiratory secretions of the children are many, the respiratory secretions will be exhausted first, then 10% chloral hydrate syrup 0.5-0.8ml/kg body weight will be taken orally or preserved, and the children will be allowed to fall asleep. The measurement was carried out after stabilization. Not suitable for the crowd Inappropriate crowd: No.