How does the Heimlich maneuver work?

How does the Heimlich maneuver work?

In general, the Heimlich maneuver is a very effective first aid technique for asphyxia and drowning asphyxia caused by foreign body obstruction of the airway. The main operation of the Heimlich maneuver for adults is to first let the patient tilt his body at 90 degrees, embrace the patient with both arms, hold the patient with the left hand in a fist, hold the wrist of the left hand with the right hand, put both hands under the patient's chest and above the navel, and quickly impact the patient's abdomen with force, and repeat the operation before discharging the foreign body; for infants of a young age, let the infant's head be tilted outward on his lap, and quickly rush into the abdomen with the index finger and middle finger of the right hand. For younger infants, place the infant's head tilted outward on his or her lap, and punch the infant's abdomen with the index and middle fingers of the right hand, then turn the infant over and beat the back with the palm of the hand until the foreign body is coughed up.