define breath rate,What is the normal range of breathing rate in an average adult person at rest?
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Answer:
Respiration rates may increase with exercise, fever, illness, and with other medical conditions. When checking respiration, it's important to also note whether you have any trouble breathing. Normal respiration rates for an adult person at rest range from 12 to 20 breaths per minute.
The respiratory rate is the rate at which breathing occurs. This is usually measured in breaths per minute and is set and controlled by the respiratory centre.
For humans, the typical respiratory rate for a healthy adult at rest is 12–18 breaths per minute. The respiratory center sets the quiet respiratory rhythm at around two seconds for an inhalation and three seconds exhalation. This gives the lower of the average rate at 12 breaths per minute.
Average resting respiratory rates by age are:
birth to 6 weeks: 30–40 breaths per minute
6 months: 25–40 breaths per minute
3 years: 20–30 breaths per minute
6 years: 18–25 breaths per minute
10 years: 17–23 breaths per minute
Adults: 12–18 breaths per minute
Elderly ≥ 65 years old: 12–28 breaths per minute.
Elderly ≥ 80 years old: 10-30 breaths per minute.
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