Introduction. Each year 80 000 Poles are suffering from stroke. The most common risk factors are hypertension, diabetes and complications, hyperlipidemia, obesity, atrial fibrillation. Lifestyle modification, such as diseases controlling, diet changing, exercises, stop smoking and limiting alcohol consumption are known as stroke prevention. Thrombectomy and thrombolytic therapy definitely increase long-term survival and prognosis. Aim. Objective of the work is assessment of surgical nurses knowledge level about postoperative stroke. Material and Methods. The research was conducted on a group of 55 randomly chosen surgical nurses. The diagnostic survey method with a proprietary questionnaire was used for the research. Results. Nurses knowledge was poor. Education and age affect to answers. Higher education qualification nurses have higher knowledge level relative to less educated nurses. Younger nurses have higher knowledge level than older nurses. Conclusions. Cardiosurgery and vascular surgery are charged as the most risk onset postoperative stroke. Knowledge of surgical nurses about risk factors, prevention, symptom, complications and procedures in case of stroke onset have particular meaning in postoperative caring. (JNNN 2020;9(4):138–144) Key Words: knowledge, nursing care, postoperative period, stroke