We can infer that speed is so important in giving artificial respiration that ………..

Artificial respiration pumping the breath of life into the
lungs of a victim of drowning, suffocation, electric
shock or gas poisoning is one of the most vital of all
first-aid procedures. Such emergencies are so
frequent that it is quite possible to be confronted by
one at any time. Mechanical devices do the job the
lungs with pure oxygen, but such equipment is seldom
available in the desperate three minutes in which the
life can still be saved seconds count! Hence, life saving
usually depends on some bystander who can perform
artificial respiration with his own bare hands.