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Abstract
Aim. The purpose of this study was to determine the relationship between compassion fatigue and moral sensitivity in nurses of critical care units of hospitals affiliated to Qazvin University of Medical Sciences. 
Background. Nurses encounter conditions during taking care for clients that can lead to a type of fatigue called compassion fatigue. Ethical sensitivity as the basis of ethics in nursing can be helpful in reducing nursing care problems.
Method. This study was a cross-sectional descriptive-correlational study in which 200 nurses working in critical care units of hospitals affiliated to Qazvin University of Medical Sciences were recruited in the study through census sampling method and inclusion criteria. Demographic characteristic form, and the compassion fatigue questionnaire and moral sensitivity questionnaire was used for data collection. Data were analyzed in SPSS version 19 using descriptive and inferential statistics.
Findings. The mean score of moral sensitivity was 53.21±13.69 and the mean score of compassion fatigue was 25.55±4.66. Spearman correlation coefficients revealed that there was a statistically significant and reverse correlation between moral sensitivity and compassion fatigue among critical care nurses (r=0.171, p=0.015).
Conclusion. The moral sensitivity of critical care nurses is related to their compassion fatigue. Therefore, provision of a framework for strengthening the moral sensitivity of nurses could be effective in reducing this phenomenon.

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Abstract
Aim. This study aimed to assess knowledge and practice of nurses about nursing care before and after cardiac catheterization
Background. The most common cause of death in most countries around the world is cardiovascular disease. Coronary angiography is an invasive procedure that is used to diagnose and/or treatment of coronary artery disease. Considering complications of cardiac catheterization, nursing care is of great importance in preventing and identifying complications. Standards are the least acceptable, expected and achievable levels of performance based on which it is possible to evaluate performance. Nurses and health care providers should work according to standard protocols.
Method. This descriptive analytical study was conducted on 65 nurses who were selected by census sampling method and based on inclusion criteria from cardiac catheterization wards of selected hospitals in Tehran, Iran. Data were collected by a questionnaire and a checklist prepared in accordance with the standards provided by the Ministry of Health and the Iranian Nursing Organization. The data were analyzed in SPSS version 21 using descriptive and inferential statistics.
Findings. Most of participants were female (63 percent). The mean score of knowledge about nursing care before and after angiography were 10.95±1.30 and 15.23±1.88, respectively. The mean score of performance about nursing care before and after angiography were 26.16±2.92 and 25.77±4.78, respectively; according to these findings the knowledge and practice of nurses about nursing care before and after angiography were evaluated as good. There was no statistically significant difference between female and male nurses in terms of knowledge and practice. Also, no statistically significant relationship was found between the knowledge and practice, before and after angiography.
Conclusion. Although most nurses had good scores of knowledge and practice about nursing care before and after angiography, but due to lack of some principles of care in their performance, further studies is recommended. Also, it is necessary for managers to provide nurses with care protocols.