Ventilation Continuous, Intermittent and Synchronized Mandatory Ventilation Vs Pressure Support
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With the explosion of technology in recent years, mechanical ventilation has changed dramatically. Asynchronous breathing is extremely common in newborn infants who have been intubated.
Asynchronous breathing has been linked to short-term negative effects such as irregular tidal volume and minute ventilation, hypercarbia, hypoxemic episodes, increased energy expenditure, increased need for sedation and paralysis, decreased venous return, increased intraventricular hemorrhage, and blood pressure fluctuations. Most newborn intensive care unit patients can now be given synchronized breaths using the ventilators that are currently available.
A ventilatory pattern is a series of ventilator inflations and/or spontaneous breaths(CMV, IMV, or CSV) with a specific control variable (volume or pressure) for the ventilator inflations. Thus, there are five basic ventilatory patterns with two control variables and three breathe sequences: VC-CMV (commonly known as VC- AC), VC-IMV, PC-CMV (commonly known as PC-AC), PC-IMV, and PC-CSV. In principle, the VC-CSV combination is not possible because VC implies ventilator cycling, and ventilator cycling makes every inflation mandatory rather than spontaneous.
Dr. Rahul Pandit, in this video emphasizes everything you need to know about the various patterns of ventilation.