Pulmonary edema is a complication of heart failure that has a one-year mortality rate of 40%. It is a condition in which, due to the loosening of the left ventricle, pulmonary hypertension and the formation of fluid in the alveoli occur, and consequently the accumulation of fluid in the pulmonary interstitiality. It manifests itself as cardiogenic or non-otherrdiogenic pulmonary edema. Cardiogenic lung edema has heart disease to cause it, while non-nerdiogenic can cause other conditions or factors such as acute respiratory distress (ARDS) and direct or indirect lung injury. The clinical picture is dominated by dyspnea. It is also manifested by cyanosis of okranine and lips, using auxiliary musculature when breathing, cold sweat decomposed and sometimes a disturbance of consciousness. With the further development of edema, breathing problems become more pronounced, whooping and expectoration of the watery, frothy content appears, which may have admixtures of blood. The diagnosis is made on the basis of a clinical picture, history, physical examination, X-ray of the lungs and ECG and laboratory findings. Pulmonary edema is treated simultaneously with continuous diagnostic treatment. Therapy is achieved by oxygen, diuretics, vasodilators and morphine. In preventing edema of the lungs, nurses / technicians also have a great responsibility. Their role is important in the treatment, diagnosis, prevention and education of patients. The care of patients with pulmonary edema is carried out on the basis of health care processes and a holistic approach. Of great importance is a precise assessment of the patient's condition in order to better identify problems in the field of health care, to make a good health care plan resulting in the fulfillment of the goals.