Risk Factors Associated With Early vs Delayed Dementia After Intracerebral Hemorrhage.
Risk Factors Associated With Early vs Delayed Dementia After Intracerebral Hemorrhage.
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DOI:
10.1001/jamaneurol.2016.0955
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发表时间:
2016-08-01
期刊:
影响因子:
29
通讯作者:
Viswanathan A
中科院分区:
文献类型:
--
作者:
Biffi A;Bailey D;Anderson CD;Ayres AM;Gurol EM;Greenberg SM;Rosand J;Viswanathan A
Intracerebral hemorrhage (ICH) survivors appear to develop cognitive impairment at high rates, both early after ICH and long-term. to identify and compare risk factors for early and delayed dementia after ICH. longitudinal study enrolling ICH survivors from January 2006 to December 2013. tertiary care academic institution. 1141 individuals with primary ICH, age ≥ 18 years and without pre-ICH dementia were considered for study enrollment. Of these, 24 refused consent and 379 were otherwise ineligible. A total of 738 ICH survivors were therefore included in Early Post-ICH Dementia (EPID) analyses. After accounting for incident dementia and mortality at 6 months, 435 participants were included in analyses of Delayed Post-ICH Dementia (DPID). clinical history and demographic information, medications exposure during follow-up. All subjects underwent CT scanning at time of ICH to determine hematoma location and size, as well as severity of CT-defined White Matter Disease (CT-WMD). Cognitive performance was captured using the Modified Telephone Interview for Cognitive Status test. Outcomes included: 1) EPID, diagnosed within 6 months after ICH; 2) DPID, diagnosed beyond 6 months after ICH. Among 738 ICH survivors, 140 (19%) developed dementia within 6 months. A total of 435 ICH without dementia at 6 months were followed longitudinally (median follow-up 47.4 months, Inter-Quartile Range [IQR] 43.4 - 52.1), with estimated yearly dementia incidence of 5.8% (95%CI 5.1-7.0%). Larger hematoma size (Hazard Ratio [HR] 1.47 per 10cc increase, 95% Confidence Interval [95%CI] 1.09-1.97) and lobar ICH location (HR 2.04, 95% CI 1.06 - 3.91) were specifically associated with EPID, but not with DPID (heterogeneity p<0.05 for both). Educational level (HR 0.60, 95%CI 0.40-0.89), incident mood symptoms (HR 1.29, 95%CI 1.02-1.63), and CT-WMD (HR 1.70, 95%CI 1.07-2.71) were specifically associated with DPID, but not EPID (heterogeneity p<0.05 for all). Early incident dementia after ICH is strongly associated with hematoma size and location. Delayed incident dementia is frequent among ICH survivors, and not prominently associated with acute ICH characteristics. These findings suggest the existence of heterogeneous biological mechanisms accounting for early vs. delayed cognitive decline among ICH survivors.