Abstract
Introduction: Intracerebral Hemorrhage (ICH) is an acute manifestation of underlying Cerebral Small Vessel Disease (CSVD), usually Cerebral Amyloid Angiopathy (CAA) or Hypertensive Arteriopathy (HTNA). CSVD-related imaging and histopathology findings were previously associated with increased depression incidence in the general population. CSVD evaluation via neuroimaging may therefore provide insight on depression risk among ICH survivors. We sought to determine whether hematoma location and CSVD MRI markers are associated with depression risk (before and after ICH) and resistance to treatment. Methods: We analyzed data from the single-center longitudinal ICH study conducted at Massachusetts General Hospital (MGH-ICH) since 1994 and currently ongoing. All participants underwent CT and MRI imaging, and were then followed longitudinally via a combination of semi-automated review of Electronic Medical Records (EMR) and phone-based research interviews. We extracted information for hematoma location and MRI neuroimaging markers of CSVD subtype and severity. We conducted univariable and multivariable analyses of depression prevalence before ICH, new-onset of depression after ICH, and resolution of depressive symptoms during follow-up. Results: We enrolled 612 ICH survivors, and followed them for a median of 46.3 months (Inter-Quartile Range: 35.5-58.7). Multiple CSVD-related markers were associated with depression outcomes of interest. Survivors of CAA-related lobar ICH were at highest risk for depression (before and after ICH), as well as treatment resistance (all p<0.05). CAA disease burden on MRI was also associated with depression risk and treatment resistance, whereas HTNA disease burden was only associated with risk of depression after ICH. Conclusions: CSVD severity on neuroimaging is associated with depression prevalence and treatment-resistance among ICH survivors. CAA-related ICH survivors are at higher risk for depression (both before and after ICH) than patients diagnosed with HTNA-related ICH. The potential role of CSVD evaluation in guiding care of ICH survivors with -or at high risk for- depression warrants additional investigative efforts
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