the aim of his study was to explore the effect of an ethical instructional package on nurses’ performance in obstetrical units. Design: A pre and post intervention study design was carried out. Setting: obstetrical units at Tanta University Hospital. Sample: A total number of 40 nurses working in the above mentioned setting. Tools of data collection:Aself-administered questionnaire and an observation checklist were used for data collection. An instructional package in nursing ethics in obstetrics and gynecology was prepared by the researchers and. The effect of the intervention was assessed by comparing post- and follow-up tests with pre-test. Results:Nurses showed a mean score of pre-intervention deficient knowledge, negative attitude, and unsatisfied practices in all areas of ethical issues and principles at obstetrical units. Statistically significant improvements in the total scores were shown in all three parameters at the post-test (p