(^)
NON-CONVENTIONAL VENTILATION
HIGH-FREQUENCY OSCILLATORY VENTILATION (HFOV)
(^) HFOV is an alternative to conventional mechanical ventilation (CMV) and is used
when ventilation cannot be adequately achieved on conventional modes. HFOV will
often improve oxygenation under circumstances when CMV is failing or when CMV
settings are excessive or air leaks are imminent.
Remember that during spontaneous breathing, and while breathing on CMV,
exhalation is a passive process. On HFOV, however, exhalation becomes an active
process, which obviously assists in CO2 management/ventilation.
HFOV is commonly utilized in infants with diaphragmatic hernia,
pulmonary hypoplasia, respiratory failure resulting from air leak
(pulmonary interstitial emphysema (PIE), and pneumothorax), meconium
aspiration syndrome, and persistent pulmonary hypertension (PPHN).
HFOV is actually deemed by some as a kinder, gentler way of ventilating
already fragile lungs because it ventilates with Mean Airway Pressure,
rather than PIP, so the lung is exposed to less repetitive barotrauma.
Infants receiving nitric oxide therapy often respond better when on HFOV
due to improved alveolar recruitment.
HFOV Settings
marcin
(Marcin)
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