HFOV - High Frequency Oscillatory Ventilation

High frequency oscillatory ventilation (HFOV) is a type of mechanical ventilation that uses a constant distending pressure (mean airway pressure [MAP]) with pressure variations oscillating around the MAP at very high rates (up to 900 cycles per minute). This creates small tidal volumes, often less than the dead space.

1. Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

4. BAROTRAUMA
High peak airway
pressures
Transfer of air
from airway to
interstitial space
Pneumothorax,
pneumomediastinum,
pneumopericardium,
subcutaneous
emphysema
VOLUTRAUMA
Lung over
distension
Diffuse alveolar
damage, damage
to pulmonary
capillary
membrane
Increased permeability
leading to pulmonary
edema
ATELECTRAUMA
Low end-
expiratory
volumes,
qualitative &
quantitative loss
of surfactant
Under recruited
alveoli
Repetitive opening and
collapse of such alveoli
lead to shear stress &
damage
BIOTRAUMA
PPVactivates
inflammatory
cascade
Inflammatory
mediators
Local and systemic
effects Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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• Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

7. Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

8. Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

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 Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

11. Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

12. INJURY
INJURY
CMV
HFOV
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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

15. Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

28. Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

29. Δ Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

30. Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

35. Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

36. Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

37. Time X Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

38. Time X Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

39. Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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S.V. Medical College, Tirupati

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• Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

49. Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

50. 1.Goldsmith & Karotkin-Assisted Ventilation of Neonate
2.Pediatric & Neonatal Mechanical Ventilation –Praveen Khilnani-
2
nd
Ed
3.High Frequency Oscillatory Ventilation –Kathleen Ventre& John
Arnold in Pediatric and Neonatal Respiratory Diseases –Springer
Publications
4.High Frequency Oscillatory Ventilation -Presentation by Vinod
Kumar Gupta & Ira Chiefetz, Duke ChildrensHospital, North
Carolina
5.HFOV –Anesthesia Tutorial of The Week 261 by Sarah Jarvis et al.
6.Sensormedics3100A Operator Manual –ViasysHealth Care
7.HFOV Basics & PractialApplications -DragerBabylog8000
Manual –Rainer Stachow
8.HFOV –Presentation by DrNalinikanthPanigrahy, Rainbow
Hospitals Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati

51. Dr Naveen Kumar Cheri
S.V. Medical College, Tirupati