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.
The pressure support level should be titrated to increase the patient's spontaneous tidal volume and decrease the patient's respiratory rate. This level of pressure support should achieve a target tidal volume, which is â¤ 6-8 cc/kg to minimize the risk of volutrauma. Medscape Critical Care.