Randomization will be performed using Random Number Generation software. Random generator is a simple software for generating random numbers between two specified numbers, where the discrete numbers are from 1 to 24 and each patient is identified by a number. First, the software randomly selects 12 numbers from 1 to 24, which are assigned to 12 intubated patients with underlying neurological problems and will be placed on BiPAP. The remaining 12 numbers from 1 to 24 will be assigned to other intubated patients with neurological problems and will be placed on CPAP. Now, patients are assigned numbers one to 24 in order of admission and are put on BiPAP or CPAP. For example, initially according to the software, we have 12 numbers that are supposed to be put on BiPAP, for example, numbers 3,4,7,11,13,14,... Now, the first patient with the entry criteria will be number one and will be put on CPAP. The next patient is assigned number 2 and is put on CPAP. The next patient is assigned number 3 and is put on BiPAP, and so on, up to 24 patients.