PURPOSE: to evaluate the knowledge about the care with dysphagia patients from the nurses who work in intensive care units, in order to evaluate their knowledge about dysphagia, and its implications on intensive care unit patients with this clinical complication. METHOD: a quantitative, descriptive and comparative study between two groups of nurses (intensive care and other sectors) working in a University Hospital, who answered a structured questionnaire with questions about dysphagia which was statistically analyzed by Fischer's test and the Differences in Proportion. RESULTS: professionals in both groups had an adequate knowledge about the definition and complications of dysphagia, but they did not know about the stages, causes and specific care related to nutrition, medication and hygiene in cases of dysphagia, the self-assessment reported lack of training in conducting some procedures to patients with dysphagia. CONCLUSIONS: the assessment found that there is a partial theoretical and practical knowledge about nursing care to patients with dysphagia, demonstrating the need for continuing education, especially in intensive care. We suggest the creation of the nursing specialization course in dysphagia.