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.
This pressure is typically set slightly higher than atmospheric pressure to prevent atelectasis, decrease inspiratory work of breathing, or improve gas exchange depending on the clinical scenario. This positive end-expiratory pressure (PEEP) is generated by a resistor in the exhalation port of the ventilator (Fig. 2).
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. References.