When giving chest thrusts to an infant, you should press about 1.5 inches (approximately 4 centimeters) or about one-third of the depth of the infant's chest. This depth is effective for generating enough pressure to clear an airway obstruction or circulate blood while minimizing the risk of injury to the infant's fragile chest.
The correct technique involves using two fingers placed just below the infant's nipple line on the sternum and pressing down with quick, firm, but controlled thrusts.
