Tofranil (imipramine): 1  Is generally used in children older than 6 years. 2  Has a success rate of 10 to 50 percent. 3  Starts working in a few days. 4  Is relatively inexpensive. 5  Will likely stop working when the child stops taking the medication.
The peak pressure is the pressure measured by the ventilator in the major airways, and it strongly reflects airways resistance. For example, in acute severe asthma, there is a large gradient between the peak pressure (high) and the plateau pressure (normal). In pressure controlled ventilation, the pressure limit is (usually) the plateau pressure due to the dispersion of gas in inspiration.
The difference in the pressure-volume curves of the lung during inflation and deflation (the lung volume at any given pressure during deflation is larger than during inflation). IRV Inspiratory reserve volume; the difference between VC and FRC. This is the maximal amount of air that can be inspired starting at FRC. Laminar Flow