Suddenly uninspiring is a very important medical problem faced by us because of different reasons.
- The breathing airway might be obstructed because of sudden allergic reasons.
- The food or a strange substance might abscond into the trachea.
- It might be with a trauma to trachea.
- It might be in asthma crisis.
In every case he/she should also consult to the physician immediately, there is an interference that might be made by you when a strange substance abscond to trachea and it rescues the life.
It is vital to interfere to the person who is in panic and cannot speak, who cannot breath as any food or strange substance absconded into the trachea. The ideal one is to pass behind this person and to put your hands onto the abdomen’s space and to press towards his breast forcefully. Thus, the air tightened within the thorax shall coerce and take out the strange substance absconded. If the person is too much overweight and laid on the ground, so you have to apply a hard pressure to the abdomen’s region with your hands. This maneuver is called "Heimlich maneuver" and you could find drawings explaining how it would be made in some restaurants.
You could also find the explanation with photos through internet.