“…This study was conducted in 14 intensive care units of health and education centers at Guilan hospitals. The mean score of nurses’ knowledge was 4.63 ± 1.708 (51.4% mean correct answers); however, various studies have reported the mean scores to be 41.2% (Blot et al) , 45.1% (Labeau et al) , 59.9% (Jansson et al) , 65.6% (Lin et al) , 78.1% (El‐Khatib et al) , 53.1% (Yoo et al) , and 51.9% (Bagheri‐Nesami et al) . Variation in the scores may be due to the differences between models of health care , the routine tasks of intensive care nurses, lack of national and international guidelines, and lack of consistent policy .…”