Introduction: A primary health care nurse is equipped with skills obtained during primary education (1st degree studies), which can be additionally widened owing to post-graduate edu- cation. The aim of the study is to assess the knowledge of nurses working in primary health care centres in Opole, Poland, with reference to providing first aid in life-threatening emergencies occurring outside their working place Material and Methods: In the quantitative studies carried out in 2015, the method of a diag- nostic poll was applied. It consisted in performing the authors’ own test referring to knowledge on providing first aid. The research comprised 45 nurses in 11 primary health care centres in Opole, Poland. Results: The responders presented a medium level of knowledge concerning basic life support and automatic external defibrillation (54%) as well as providing help to a non-breathing child (55%). As few as 1/3 of the responders knew how to proceed in a communication accident, and 1/4 did not have verify their skills after graduation through taking part in post-graduate education. The total of 40% of the responders had provided first aid in life-threatening emergencies occurring outside their working place. Conclusions: The level of post-graduate education should be raised along with the number of regular training sessions in the working place with reference to providing first aid in life-threatening emergencies.