Assist Control (AC): These types of ventilation has called by many names. It provides help to baby with every breath. If the baby doesn't breathe on their own, the machine will automatically provide a certain number of breaths, and the machine makes sure each of these breaths matches when the baby naturally breathes in. Synchronized intermittent mandatory ventilation (SIMV): This ventilation gives a certain number of breaths to baby, that are synchronized with the patient’s own inspiration. When the neonatal breath more than set ventilator respiratory rate, it won't give extra breaths. This can be helpful when a baby trying to learn to breathe on its own. Volume Controlled: This type of breathing mode can work with two different modes, SIMV or SIPPV. The goal is to provide the amount of air to set by the doctor. A maximum peak inspiratory pressure (PIP) is set, the ventilator’s PIP will vary to reach the target volume. Pressure Support Ventilation: This mode helps babies breathe with the help of a ventilator machine for every breath. But here, the baby can decide how fast they want to breathe and for how long they want to take each breath.