I think of frequency as being synonymous with rate, and amplitude with delta P, however I do understand what you’re driving at if the Hertz (frequency) are fixed. The goal being to increase ventilation.
Thank you for such great simplified presentation I need to make sure from you... Amplitude means respiratory rate or not? Please keep educating us with your simple way.
No suction on PH？But on the 7th Edition of Neonatology,it says"Suction the airway initially (sometimes as often as every 15 minutes) until bleeding subsides. This is critical to reduce the risk of secretions blocking the airway. "
Persistent pulmonary hypertension of the newborn (PPHN) is often secondary to parenchymal lung disease (such as meconium aspiration syndrome) or lung hypoplasia (with congenital diaphragmatic hernia) but can also be idiopathic. PPHN is characterized by elevated pulmonary vascular resistance, resulting in right-to-left shunting of blood and hypoxemia.
NeoPedia Thanks for a quick response. In our setting, we inly have CMV, SIMV and spontaneous modes which can be either Pressure or volume controlled. We use pressure controlled. eg, if a baby has 50 breaths per minute but O2 saturations remains in 80s. Tube is not blocked or dislodged, no air leaks or pneumothorax. In this situation, how many mandatory breaths can be given to baby to improve O2 saturation?
but by increasing PIP without increasing PEEP, you increase the driving pressure, which is associated with worst outcomes... and you make it seem that a solution to a patient with low SpO2 is to increase PIP, which hardly will be the case
Thanks Tarek for your Comment.. Of course these are options for treatment.. please remember it’s this lecture is about basic bedside management no deep digging in pathophysiology .. Part of management is to discuss with a senior colleague as per the lecture for further management ...
Frequency - This determines the frequency of the pressure swings and usually varies from 7-15 Hz (1 Hz = 60 cycles/min) in neonatal practice. Ventilation is most efficient if the frequency matches the natural resonant frequency of the diseased lungs. It is a very powerful tool for CO2 elimination and should only be altered after careful consideration and discussion with senior experienced personnel. Usual magnitude of change 1 Hz / step
