Tehran University of Medical Sciences Archives of Anesthesiology and Critical Care 2423-5849 11 3 2025 03 23 Distress Tolerance and Factors Affecting It among Nurses Working in the COVID-19 Intensive Care Unit 375 379 Mehdi Dehghani Firoozabadi Department of Anesthesiology, Tehran Heart Center, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran. Sajjad Mirzaee Department of Anesthesia, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran. Afzal Shamsi Department of Anesthesia, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran. 2025 02 07 2025 02 13 Background: Nurses, as professionals in the caring profession, try to perform safe and effective nursing interventions all the time and support patients to achieve the most favorable treatment outcomes. Nowadays, one of the important and international issues in nursing is distress tolerance. This study aimed to determine distress tolerance and affecting it among nurses working in the COVID-19 intensive care unit. Methods: This study is cross-sectional. The sample consisted of 128 nurses working in the intensive care unit. A non-randomized convenience sampling method was used to select the samples based on the inclusion criteria. The data collection instruments included two questionnaires: a demographic characteristics questionnaire and a standardized distress tolerance questionnaire. The data were analyzed using SPSS software version 25, employing both descriptive and inferential statistical tests. Results: The mean age of the samples was 34.95 ± 6.77 years. The highest scores of distress tolerance subscales included appraisal (17.89±3.62), tolerance (8.97±2.60), absorption (8.83±2.30), and regulation (2.25 ±8.39), respectively. The statistical test of linear regression showed that service history and shift work have a significant power to predict nurses' distress tolerance. Conclusion: The distress tolerance of nurses working in the ICU units was low. Factors such as service history and shift work influence their distress tolerance. Accordingly, it is necessary to plan to improve nurses' distress tolerance. https://aacc.tums.ac.ir/index.php/aacc/article/view/1196