Speaking roughly, normal levels of thyroid-stimulating hormone (TSH) are in the range of 0.4 to 4.0 mIU/L. However, each laboratory and test manufacturer identifies its own normal TSH range.
A common strategy is to combine SIMV with an additional ventilator mode known as pressure support ventilation (PSV) (Fig. 4). In this situation, inspiratory pressure is added to spontaneous breaths to overcome the resistance of the endotracheal tube or to increase the volume of spontaneous breaths.
Using the latest technology in Noninvasive Ventilatory Support for home use, the BiPAP AVAPS device guarantees a certain volume of air per minute using the Average Volume Assured Pressure Support (AVAPS) technology exclusive to Respironics.