Respiratory Rate and Breathing patterns

Normal RR 15-20 (average 20)/min For unknown reason (and no data cited), most textbooks record the normal rate as 12-18/mins   Tachypnea = RR >25/min Bradypnea = RR <10/minutes Abnormal breathing patterns ** Pathogenesis: Enhanced sens to CO2: causes hyperventilation excessively until the Co2 level drops so low that apnea happens, then Co2 builds up…

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