Effect of two airway humidifying systems on respiratory rate in head traumatic patients under mechanical invasive ventilation.

In patients with head traumatic who have a low level of consciousness and require mechanical ventilation, two airway moisturizing devices are used to warm and moisturizing the airway based on clinical conditions of the patient. The purpose of this study was to evaluate the effect of two airway humidifying systems on the number of respiratory head traumatic patients under invasive mechanical ventilation. In this randomized clinical trial, 50 patients were randomly divided into two intervention groups. Two heat exchangers and heat exchangers and a filtered moisture were used for each group for 30 minutes each. At the end of each period, using airway moisturizer, the patient's respiratory rate was recorded from the patient's mechanical ventilation device, the data were analyzed by SPSS25 software. There was a significant difference between the two groups of heat and moisture exchangers and the heat exchanger and the filter humidity in the first placement (P = 0.049). There was no significant difference between the two heat and moisture exchange groups and the heat exchanger and the filter moisture content in the second placement (P = 0.056). Comparing the successive use of both devices in the thermal moisture group was significant (P = 0.013). Comparing the successive use of both devices in the heat exchange group and the filtered moisture was significant (P = 0.037). The use of a heat exchanger and a filtered moisture exchanger in the path of an aggressive mechanical ventilation flow in patients with head trauma leads to an increase in respiratory rate, which can be due to an increase in airway resistance and an increase in arterial blood carbon dioxide and dead body volume. It is recommended that this airway moisturizer be used with caution and according to the patient's clinical condition.