Background: Due to the large fluctuation of vitally endangered patients in the intensive care unit and emergency medicine department, the medical staff is exposed to a stressful load, and cardiopulmonary resuscitation is one of the most stressful scenarios. Aim: To present the experiences of nurses/technicians during and after resuscitation procedures in the ICU and ER of Karlovac General Hospital and Varaždin General Hospital, to identify stressors encountered by nurses/technicians which are related to resuscitation. Methods: Nurses/technicians working in the ER and the ICU in the Karlovac and Varaždin General Hospitals were included in the survey. The survey includes 80 respondents of both sexes and all levels of education, aged from 20 to 65 years old. The research was conducted from April 30 to May 25, 2024, in the Karlovac and Varaždin General Hospitals. Data were collected using an anonymous questionnaire and processed in Microsoft Excel and IBM SPSS Statistics 26.0 programs. Results: Nurses/technicians experience a moderate level of stress during and after resuscitation at both workplaces. The respondents reported the lowest stress level when observing and pointing out colleagues’ mistakes and when experiencing hand tremors during resuscitation. Reanimating a young person and when more than one doctor gives orders during resuscitation caused the highest level of stress. The majority of nurses/technicians were involved in more than 20 resuscitations per year. Conclusion: The research showed that for effective resolution of crisis situations among healthcare workers is required good organization of work and cooperation in the team, as well as post-resuscitation debriefing.