1) Care for 2) Experience a lack of oxygen 3) Produce hyperventilation in 4) Treat 1) Pant 
An increase in the rate or depth of breathing. ... Symptoms include rapid breathing, faintness or fainting, numbness around the mouth, fingertips or toes and cramping in the hands and fingers. ... (27 Sep 1997) ... 
[v] - produce hyperventilation in 2. [v] - breathe excessively hard and fast
verb breathe excessively hard and fast; `The mountain climber started to hyperventilate`
breathe excessively hard and fast