Duration of mechanical ventilation ( 98.420.3 hours vs. 143.329.6 hours , t = 9.766 , P = 0.001 ) and ICU stay ( 7.13.1 days vs. 9.52.5 days , t = 2.993 , P = 0.004 ) were significantly reduced in modified surviving sepsis bundle group compared with standard surviving sepsis bundle group .