• Ying Yang, Yong Ye, Huibo Wang, Hui Wu, Jing Zhang, Zhiyang Lv, Wen Li, and Jian Yang.
• Department of Cardiology, The First College of Clinical Medical Science, China Three Gorges University and Yichang Central People's Hospital, Yichang, China.
• Medicine (Baltimore). 2024 Aug 2; 103 (31): e39128e39128.

RationaleTurner syndrome is characterized by complete or partial loss of the second sex chromosome. In patients with Turner syndrome, hypertension is well described. However, the literature regarding malignant hypertension is scarce. Therefore, an accurate and timely diagnosis and treatment are important.Patient ConcernsA 13-year-old female with Turner syndrome presented to the emergency department with malignant hypertension, headache, spraying vomiting, convulsion, and loss of consciousness. Considering her medical history, symptoms, and auxiliary examination, secondary hypertension (primary reninism) was suspected, but without any occupying or hyperplasia in renal and adrenal.DiagnosisA type of secondary hypertension, primary reninism.InterventionsThe patient was immediately transferred to the pediatric intensive care unit. Subsequently, she was given nifedipine 0.35 mg/kg and captopril 0.35mg/kg to reduce blood pressure (BP), mannitol and furosemide to reduce cranial pressure, and phenobarbital and midazolam to terminate restlessness successively. Three hours later, the BP was consistently higher than 170/120 mm Hg, sodium nitroprusside was pumped intravenously, then, giving oral drug transition. Finally, she was given Valsartan-Amlodipine Tablets (I) (80 mg valsartan and 5 mg amlodipine per day) and bisoprolol (2.5 mg per day).OutcomesFor 2.5 years of follow-up, the BP reduced to 110-130/60-85 mm Hg, heart rate ranged between 65 and 80 bpm, and she could go to school without any headache, convulsion, and syncope.LessonsThe clinical phenotype of Turner syndrome is complex and varied, affecting multiple systems and organs. Turner syndrome with malignant hypertension is rare, so we should systematically evaluate secondary hypertension, target-organ damage, and accompanied by standard management when Turner syndrome presents with hypertension.Copyright © 2024 the Author(s). Published by Wolters Kluwer Health, Inc.

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