A simple circuit to deliver bubbling CPAP

Indian Pediatr. 2008 Apr;45(4):312-4.


Nasal continuous positive airway pressure (CPAP), especially bubbling CPAP, is known to reduce the need for more invasive ventilation. We here describe a circuit that can deliver bubbling CPAP in resource poor settings. We describe how the oxygen concentration can be altered from 98% to 21% oxygen using this system. Addition of a humidifier in the circuit has the effect of reducing the oxygen concentration by 1 to 5%. The cost of putting together the system is approximately Rs 5000.

MeSH terms

  • Continuous Positive Airway Pressure / instrumentation*
  • Continuous Positive Airway Pressure / methods
  • Humans
  • Infant, Newborn
  • Nasopharynx
  • Oxygen / blood*
  • Oxygen / metabolism
  • Oxygen Consumption / physiology*
  • Pilot Projects


  • Oxygen