{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,9]],"date-time":"2026-09-09T16:45:17Z","timestamp":1788972317941,"version":"build-2803163510"},"reference-count":16,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2025,10,7]],"date-time":"2025-10-07T00:00:00Z","timestamp":1759795200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"},{"start":{"date-parts":[[2025,10,7]],"date-time":"2025-10-07T00:00:00Z","timestamp":1759795200000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["shmpublications.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal of Hospital Medicine"],"published-print":{"date-parts":[[2026,5]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>Hyperleukocytosis is defined as a white blood cell count exceeding 100,000\/\u00b5L and is a critical manifestation of acute and chronic leukemia. It can lead to life\u2010threatening complications such as leukostasis, disseminated intravascular coagulation, and tumor lysis syndrome. Leukostasis results from microvascular obstruction by leukemic blasts, causing multisystemic manifestations. Leukostasis is primarily a clinical diagnosis requiring prompt recognition and intervention. Supportive care includes intravenous hydration, uric acid\u2010lowering agents, and cautious blood transfusions to prevent worsening hyperviscosity. Hydroxyurea and cytarabine are used as cytoreductive agents until a definitive diagnosis and management are started. 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