HFOV and Gas Mixtures
RES 262
Julia Fussell
Sarah Bandy
HFOV and Gas Mixtures
The type of ventilation I will be discussing is High Frequency Oscillating ventilation. I chose this type of ventilation because of how different it is compared to traditional ventilation. “HFOV uses a constant distending pressure where an oscillatory flow along with clearly defined inspiratory and expiratory phases are generated in the lung”( adhb.govt.). Because the pressure is constant, it is easy to think of this type of ventilation as a vibrating CPAP. HFOV allows alveolar ventilation and carbon dioxide removal with an oscillatory pressure affecting the mean arterial pressure at a variable frequency that is measured in HZ and an adjustable amplitude. The oscillatory waveform at the airway opening …show more content…
Barotrauma or hyperinflation can be reduced by decreasing the MAP. Secretions will mobilize and will require suction as needed.” Hypotension can be corrected by decreasing the MAP after ruling out other causes like pneumothorax, sepsis, and dehydration”(Klein,J. 2016).
“Although supplemental oxygen is valuable in many clinical situations, excessive or inappropriate supplemental oxygen can be harmful”(Malhotra). This is known as oxygen toxicity.” Too much oxygen can have negative effects on brain, eyes, and lung development. All NICU infants are at risk for oxygen toxicity because of the increased exposure to oxygen and decreased antioxidant defenses”).
Since oxygen toxicity is a reality in the NICU we should always treat oxygen as a drug. We should limit oxygen to an as needed basis. Current standards include: using room air for resuscitation, oxygen blender, only using invasive ventilation when necessary and increasing the use of cpap. We should titrate oxygen using a pulse oximeter:
• Less than 34 weeks gestation- 88-93%
• Greater than 34 weeks gestation-
RES 262
Julia Fussell
Sarah Bandy
HFOV and Gas Mixtures
The type of ventilation I will be discussing is High Frequency Oscillating ventilation. I chose this type of ventilation because of how different it is compared to traditional ventilation. “HFOV uses a constant distending pressure where an oscillatory flow along with clearly defined inspiratory and expiratory phases are generated in the lung”( adhb.govt.). Because the pressure is constant, it is easy to think of this type of ventilation as a vibrating CPAP. HFOV allows alveolar ventilation and carbon dioxide removal with an oscillatory pressure affecting the mean arterial pressure at a variable frequency that is measured in HZ and an adjustable amplitude. The oscillatory waveform at the airway opening …show more content…
Barotrauma or hyperinflation can be reduced by decreasing the MAP. Secretions will mobilize and will require suction as needed.” Hypotension can be corrected by decreasing the MAP after ruling out other causes like pneumothorax, sepsis, and dehydration”(Klein,J. 2016).
“Although supplemental oxygen is valuable in many clinical situations, excessive or inappropriate supplemental oxygen can be harmful”(Malhotra). This is known as oxygen toxicity.” Too much oxygen can have negative effects on brain, eyes, and lung development. All NICU infants are at risk for oxygen toxicity because of the increased exposure to oxygen and decreased antioxidant defenses”).
Since oxygen toxicity is a reality in the NICU we should always treat oxygen as a drug. We should limit oxygen to an as needed basis. Current standards include: using room air for resuscitation, oxygen blender, only using invasive ventilation when necessary and increasing the use of cpap. We should titrate oxygen using a pulse oximeter:
• Less than 34 weeks gestation- 88-93%
• Greater than 34 weeks gestation-