Hypertensive disorders of pregnancy (HDP), especially preeclampsia (PE) and its complications, such as eclampsia and HELLP syndrome, pose significant risks to maternal-fetal health. Effective action by health professionals in the early detection of PE is crucial. This study aimed to describe the Nursing Care Systematization (NCS) in a case of PE, emphasizing the nursing team’s role as a key component for efficient and continuous care. This descriptive work, a case study, was conducted in June 2024, focusing on a pregnant woman with preeclampsia and signs of severity at a reference maternity hospital in the interior of Ceará. Professional practice was guided by the Nursing Process, following the steps of assessment, nursing diagnosis, planning, intervention, and evolution. E.S.C, a 40-year-old woman, second pregnancy, with a family history of hypertension and a previous twin pregnancy, sought care for premature rupture of membranes at 31 weeks of gestation. During hospitalization, corticosteroids and tocolytics were administered, but indications of preeclampsia with severe features and a possible HELLP syndrome emerged, resulting in the indication for cesarean delivery. The delivery was successful, and the newborn showed good health. The NCS aims to enhance nursing care, improving the quality of assistance by enabling planned care based on solid knowledge. The integration of NANDA diagnoses with the NIC and NOC classifications facilitates the development of a care plan focused on the biological needs of women with HELLP syndrome