Acknowledgements
This article is the result of the thesis for the fulfillment of a master’s degree in adult intensive care nursing. The study was approved (grant number: NCRCCD-9707) and financially supported by the research vice-chancellor of Ahvaz Jundishapur University of Medical Sciences. We are grateful for the cooperation of the nurses of the intensive care units of Golestan and Imam Khomeini hospitals in Ahvaz who helped us in this research.