Chest Physiotherapy in Infants: Safe and Effective Methods
For infants with severe foreign-body airway obstruction, perform repeated cycles of 5 back blows alternating with 5 chest thrusts—never use abdominal thrusts in infants, as they can cause serious liver injury. 1
Critical Safety Distinction by Age
For Infants (<1 year old):
- Back blows: Position infant prone with head lower than chest (can hold along your forearm or across your thighs). Deliver 5 sharp blows between the shoulder blades 1, 2
- Chest thrusts: Turn infant supine with head lower than chest. Use 2 fingers placed just below the intermammary line (NOT the 2-finger CPR technique, which has been eliminated). Deliver 5 sharp thrusts at approximately 20 per minute 1, 2
- Never perform abdominal thrusts (Heimlich maneuver) in infants—this can rupture their relatively large and unprotected liver 3, 4
For Children (≥1 year to puberty):
- After the second round of back blows, alternate between 5 back blows and 5 abdominal thrusts 2
- Use upright Heimlich maneuver if conscious, or supine abdominal thrusts if unconscious 2
Important Context: Chest Physiotherapy for Respiratory Conditions
The evidence shows chest physiotherapy should NOT be performed routinely in infants, particularly mechanically ventilated preterm infants, due to risk of intracranial bleeding and postnatal encephaloclastic porencephaly 5.
For Acute Bronchiolitis:
- Conventional percussion and vibration techniques show no benefit and should not be used 6, 7
- Forced expiratory techniques cause no improvement and can lead to severe adverse effects including vomiting and transient respiratory destabilization 6, 7
- Slow passive expiratory techniques may provide mild improvement in moderate cases but evidence is limited 6
Critical Safety Points:
- Never perform blind finger sweeps of the pharynx—they can impact foreign bodies deeper into the larynx 2, 3
- Check the mouth visually after each cycle and remove only visible objects 3, 4
- If infant becomes unresponsive during choking, immediately begin CPR with chest compressions (do not check pulse first) 1, 3
Technique Updates (2025 Guidelines):
The 2-finger chest compression technique has been eliminated for CPR due to ineffectiveness in achieving proper depth. Instead, use either 1-hand technique or 2-thumb encircling hands technique for infant CPR 1. However, for chest thrusts during choking relief, the technique differs and remains appropriate 1.
The key distinction: chest physiotherapy for secretion clearance lacks evidence and carries risks, while specific maneuvers for foreign-body airway obstruction are life-saving and evidence-based.