[Clinical application of different sedation regimen in patients with septic shock]

To evaluated the 3 sedation regimen for patients with septic shock.

The randomized controlled trial wan conducted. Forty-five patients with septic shock were assigned to 3 groups (midazolam group, propofol group, and dexmedetomidine group) randomly. The basic characteristics of patients, the duration of mechanical ventilation, the length of stay in the ICU, the death rate for 28 days and the regulatory cell (Treg) in peripheral blood were observed. The control group for Treg test was consisted of 20 healthy volunteers.

There were no significant differences between the groups in the death rate for 28 days and the duration of mechanical ventilation. The length of stay in the ICU in dexmedetomidine group was shorter than that in midazolam group(15.21±5.55 vs.19.67±5.7 days, P<0.05). The Treg of 3 groups was higher than that of control group (11.82±4.93 vs.3.69±1.71, 11.30±3.42 vs. 3.69±1.71, 12.83±6.17 vs. 3.69±1.71) at the first day of ICU. The Treg after 3 ICU days in dexmedetomidine group and the Treg after 5 ICU days in propofol group and in midazolam group have no difference with control group.

For the patients with septic shock, dexmedetomidine could decrease the length of stay in the ICU and the duration of immune suppression.