• Continuous Positive Airway Pressure

    Continuous positive airway pressure (CPAP) is a mode of noninvasive respiratory support that provides a continuous distending pressure throughout the respiratory cycle to spontaneously breathing patients.

CPAP is a well-established treatment that has been in use in clinical practice for more than 40 years.1-3 

CPAP is an accepted alternative to routine intubation and invasive ventilation in preterm infants with respiratory distress syndrome4,5 and is the preferred initial method of providing noninvasive respiratory support.6

How does CPAP therapy work?

CPAP therapy delivers a mixture of heated and humidified air and oxygen and generates a continuous distending pressure throughout the respiratory cycle by means of a sealed interface.7,8 

There are different methods of delivering CPAP therapy, such as bubble CPAP, variable flow CPAP, and ventilator-derived CPAP. Bubble CPAP is a simple and economical mode of delivering CPAP in neonates, including those born preterm and those with a low birth weight.8,9

There are multiple benefits in providing a continuous distending pressure such as splinting the upper airway, maintaining lung expansion, preventing end-expiratory alveolar collapse and conservation of surfactant.7

1. Gregory, G. A., Kitterman, J. A., Phibbs, R. H., Tooley, W. H., & Hamilton, W. K. Treatment of the idiopathic respiratory-distress syndrome with continuous positive airway pressure. N. Engl. J. Med. 284, 1333–1340 (1971).
2. Avery, M. E. et al. Is chronic lung disease in low-birth-weight infants preventable? A survey of eight centers. Pediatrics 79, 26–30 (1987).
3. Wung, J. T., Driscoll, J. M., Epstein, R. A., & Hyman, A. I. A new device for CPAP by nasal route. Crit. Care Med. 3, 76–78 (1975).
4. De Paoli, A. G. Nasal CPAP for neonates: what do we know in 2003? Arch. Dis. Child. – Fetal Neonatal Ed. 88, 168F–172 (2003).
5. Morley, C. & Davis, P. Continuous positive airway pressure: current controversies. Curr. Opin. Pediatr. 16, 141–145 (2004).
6. Sweet, D. G. et al. European consensus guidelines on the management of respiratory distress syndrome – 2019 update. Neonatology 115, 432–450 (2019).
7. Gupta, S. & Donn, S. M. Seminars in Fetal and Neonatal Medicine Continuous positive airway pressure: Physiology and comparison of devices. Semin. Fetal Neonatal Med. 21, 204–211 (2016).
8. Courtney, S. E. & Barrington, K. J. Continuous positive airway pressure and noninvasive ventilation. Clin. Perinatol. 34, 73–92, vi (2007).
9. Alessi, S. Evidence Regarding the Use of Bubble Continuous Positive Airway Pressure in the Extremely Low Birth-Weight Infant: Benefits, Challenges, and Implications for Nursing Practice. Adv. Neonatal Care 18, 199–207 (2018).
10. Martin, S., Duke, T., & Davis, P. Efficacy and safety of bubble CPAP in neonatal care in low- and middle-income countries: a systematic review. Arch. Dis. Child. Fetal Neonatal Ed. 99, F495-504 (2014).
11. Magnenant, E. et al. Dynamic behavior of respiratory system during nasal continuous positive airway pressure in spontaneously breathing premature newborn infants. Pediatr. Pulmonol. 37, 485–491 (2004).
12. Bhutani, V. K. Development of the Respiratory System. In Manual of Neonatal Respiratory Care 3–15 (Springer US, 2012). doi:10.1007/978-1-4614-2155-9_1
13. Diblasi, R. M. Nasal continuous positive airway pressure (CPAP) for the respiratory care of the newborn infant. Respir. Care 54, 1209–1235 (2009).
14. Higgins, R. D., Richter, S. E., & Davis, J. M. Nasal continuous positive airway pressure facilitates extubation of very low-birth-weight neonates. Pediatrics 88, 999–1003 (1991).
15. Finer, N. N. et al. Early CPAP versus surfactant in extremely preterm infants. N. Engl. J. Med. 362, 1970–1979 (2010).
16. Tooley, J. & Dyke, M. Randomized study of nasal continuous positive airway pressure in the preterm infant with respiratory distress syndrome. Acta Paediatr. 92, 1170–1174 (2003).

Key mechanisms and benefits of CPAP therapy are

Maintains functional residual capacity (FRC)

Reduces the work of breathing

Decreases the need for mechanical ventilation

CPAP can enhance lung volume recruitment and establish and maintain FRC,11,12 helping to keep the lungs open.

CPAP has been shown to elevate end-expiratory lung volume, which helps to unload the inspiratory muscles and reduce the energy required to expand the lungs for breathing.11,13,14

The use of CPAP alone, or CPAP in combination with surfactant when used as primary respiratory support has been associated with a reduced need for intubation and invasive ventilation.15,16

  • Bubble CPAP System

    Continuous positive airway pressure (CPAP) therapy delivers a heated and humidified blend of air and oxygen while at the same time generating a continuous distending pressure throughout the respiratory cycle. Fisher & Paykel Healthcare offers a system including circuits, a pressure relief manifold, and Bubble CPAP generator.

Bubble CPAP generator features

The Fisher & Paykel Healthcare Bubble CPAP generator is designed to provide consistent pressure through an auto-leveling feature. This design moves excess liquid into a separate chamber from the main pressure-generating section, automatically ensuring that the set pressure does not change with liquid build-up.

The bubble generator includes an overflow container that can be detached to remove excess water from the system, without disrupting delivery therapy.

  • FlexiTrunk™ Interface

    The Fisher & Paykel Healthcare FlexiTrunk nasal CPAP interface is an integrated solution that includes all the necessary components for delivering CPAP, such as nasal masks, nasal prongs, bonnet, and headgear.

FlexiTrunk Interface features

All the components of FlexiTrunk Interface (nasal masks, nasal prongs, bonnet, and headgear) are designed to fit and work together. With 11 nasal prongs, 4 nasal masks, and 3 nasal tubing lengths, FlexiTrunk Interface offers a wide size range to provide the correct fit for a variety of patients.

By offering both a nasal mask and nasal prongs interface, FlexiTrunk Interface allows healthcare professionals to cycle between interface types during CPAP therapy.

FlexiTrunk Interface’s mid-line design and the flexible tubing help to facilitate multiple caring positions including prone and supine, while the mask range is designed to minimize the force needed to create a seal.

Moisture-wicking technology is built into the interface to help minimize condensate build-up. The large-diameter tubing reduces resistance to flow.

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