If the victim is still conscious, encourage the person to cough – this may dislodge the obstruction.
However, if the victim is getting exhausted and unable to cooperate, ask the victim to bend forward over the back of a chair or against your hand support and give four or five sharp blows in quick succession, in the interscapular region.
If this still fails to dislodge the obstruction, consider Heimlich maneuver.

Heimlich maneuver is based on the principle of increasing intrathoracic pressure by thrusting up of the diaphragm.

Steps:

1. Stand behind the victim.
2. Put both arms under his/her arms and around the chest, with hands at the level of the upper abdomen.
3. Clench one fist with thumb inside the fingers. Place it midway between the umbilicus and xiphisternum.
4. Grasp the fist with the other arm and pull both hands inwards and upwards towards you. Movement should occur at the elbows.
5. Repeat with greater force if unsuccessful.

IF the victim is already unconscious

• Inspect the mouth, and remove any visible obstructions.
• Kneel beside or astride the victim.
• Place the heel of your hand on the upper abdomen below the sternum and cover it with the other hand and interlock the fingers.
• Give four quick abdominal thrusts upwards and inwards.
• Inspect the mouth again to identify any dislodged foreign body, which has to be swept out with a hooked index finger. DO NOT PERFORM A BLIND FINGER SWEEP.