The purpose of respiration is carbon dioxide, breathing fresh oxygen, to ensure that the human body's normal metabolic activity.
Carefully to the parents of the child's breathing will find the number (frequency) faster than adults, which is Why? Normal children of different age groups in respiratory rate are also different, the younger the faster respiratory rate. Normal breathing in children of different age groups are as follows:
Premature infants: 50 times / min; full-term newborns: 40 times / min; baby: 30 times / min; children 1-3 years old: 24 times / min; 4-7 years old: 22 times; 8-14 years old: 20 times / min; adult 8-20 times / min.
Faster respiratory rate in children is due to the anatomy of the respiratory tract in children determined by physiological characteristics. Lung capacity in children with small body surface area calculated according to the lung capacity of 6 times smaller than adults; tidal volume (quiet breathing of the volume of each inhalation of breath) is also small, only 40% of adult -50%, while the level of metabolism and oxygen demand are relatively high, according to body surface area basis, the energy metabolism in children with 1.6 times for adults.
Carefully to the parents of the child's breathing will find the number (frequency) faster than adults, which is Why? Normal children of different age groups in respiratory rate are also different, the younger the faster respiratory rate. Normal breathing in children of different age groups are as follows:
Premature infants: 50 times / min; full-term newborns: 40 times / min; baby: 30 times / min; children 1-3 years old: 24 times / min; 4-7 years old: 22 times; 8-14 years old: 20 times / min; adult 8-20 times / min.
Faster respiratory rate in children is due to the anatomy of the respiratory tract in children determined by physiological characteristics. Lung capacity in children with small body surface area calculated according to the lung capacity of 6 times smaller than adults; tidal volume (quiet breathing of the volume of each inhalation of breath) is also small, only 40% of adult -50%, while the level of metabolism and oxygen demand are relatively high, according to body surface area basis, the energy metabolism in children with 1.6 times for adults.
Supply and requirements to address the contradiction between, and only take shallow rapid breathing this way for at least the energy consumption to meet the body's needs. Once the abnormal body, such as pneumonia, the children cope with the additional burden of poor reserve capacity of up to 2.5 times, however, adults only 1 / 4. Therefore are prone to respiratory failure in children.
WHO (World Health Organization) in children with acute respiratory tract infection with special emphasis on prevention and control planning, speed up breathing is mainly pneumonia: the so-called referring to the shortness of breath in February following the baby, breathing> 60 times / min, 2-Dec breathing> 50 times, 1-5-year-old breathing> 40. This indicator is the primary hospital diagnosis of pneumonia and one of the criteria, simple and feasible, it is worth promoting
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