What would be the evaluation for breathing cut-out ineffective related to hyperventilation?

hyperventilation as manifested by RR of 28/ min?What would be the evaluation for breathing cut-out ineffective related to hyperventilation?
The best indication of aeration is PaCO2. Normal range for PaCO2 is 35-45mmHg. If ones PaCO2 is smaller quantity then 35 it is certain as hyperventilation.
Normal respiratory rate is 12-20 in adults. Some associates who are evaluating a patient will telephone call a respiratory rate above 20 as hyperventilation but if the PaCO2 in ordinary, they really aren't.
Encyclopedia Britannica defines it this opening:
rapid shallow breathing that provides the body near an excess of oxygen and a deficit of carbon dioxide.
I'm not sure I understand the press. An RR does not necessarily indicate hyperventilation. Hyperventilation RR's need to be increased to the point where on earth the body begins to blow bad CO2...I dont think 28 will do that.