Chen, Szu-JuSzu-JuChenHSIN-HSI TSAILo, Yen-LingYen-LingLoYA-FANG CHENSUNG-CHUN TANGJIANN-SHING JENGLI-KAI TSAI2023-05-122023-05-122023-092396-9873https://scholars.lib.ntu.edu.tw/handle/123456789/631022Background: Acute blood pressure (BP) reduction is the first-line treatment for acute spontaneous intracerebral hemorrhage (ICH); however, recent research suggests that intensive BP reduction along with cerebral small vessel disease (cSVD) is a risk factor for remote DWI lesions (RDWILs). We aimed to delineate the interplay between cSVD and BP reduction therapy on the risk of RDWILs. Methods: We enrolled 303 patients who underwent brain magnetic resonance imaging within 7 days after acute spontaneous ICH. RDWILs were categorized as occurring in borderzone (BZ) or non-BZ areas. We examined the effect of cSVD, acute BP reduction, and their interaction on RDWILs. Results: RDWILs were observed in 34 (11%) patients (59.8 ± 10.3-years-old, 24% male). RDWILs were associated with a larger acute weighted average mean arterial pressure (MAP) reduction in the initial 24 h after ICH onset and a higher total cerebral microbleed (CMB) count. Intensive MAP changes (odds ratio (OR) per 10 mmHg 1.76, 95% confidence interval (CI) 1.03–3.20), total CMBs burden (OR per 10 CMBs 1.21, 95% CI 1.08–1.39), and presence of lobar CMBs (OR 7.33, 95% CI 1.59–55.6) were risk factors for RDWILs at BZ, but not at non-BZ. Furthermore, a significant interaction was observed between lobar CMBs and MAP reduction on increased risk of RDWILs at BZ (p = 0.030). Conclusion: cSVD modulates the effect of acute BP reduction on the risk of RDWILs. Patients with extensive microangiopathy have a higher risk of developing cerebral ischemic changes in BZ during unstable hemodynamic status.Blood pressure; cerebral small vessel disease; magnetic resonance imaging; intracerebral hemorrhage; remote DWI lesion[SDGs]SDG3journal article10.1177/23969873231170989376415482-s2.0-85153511828WOS:000973151100001https://api.elsevier.com/content/abstract/scopus_id/85153511828