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Recurrent intracerebral hemorrhage in patients with cerebral amyloid angiopathy: a propensity-matched case–control study

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Abstract

Objective

Cerebral amyloid angiopathy (CAA) can present with intracerebral hemorrhage (ICH), convexity subarachnoid hemorrhage (SAH), and rarely acute ischemic stroke (AIS). The objective of our study was to compare the readmission rates for recurrent ICH, SAH, and AIS among patients admitted for ICH with and without CAA.

Methods

Using the National Readmissions Database 2016–2018 we identified patients admitted for ICH with and without a concomitant diagnosis of CAA. Primary outcome of the study was readmission due to ICH. Secondary outcomes included readmissions due to AIS and SAH. Survival analysis was performed, and Kaplan–Meier curves were created to assess for readmissions.

Results

The study consisted of 194,290 patients with ICH, 8247 with CAA and 186,043 without CAA as a concomitant diagnosis. After propensity matching, we identified 7857 hospitalizations with CAA and 7874 without CAA. Patients with CAA had higher risk of readmission due to ICH as compared to those without CAA [hazards ratio (HR) 3.44, 95% confidence interval (CI) 2.55–4.64, P < 0.001] during the mean follow-up period of 181.4 (SD ± 106.4) days. Patients with CAA were also more likely to be readmitted due to SAH (HR 2.52, 95% CI 1.18–5.37, P 0.017) but not due to AIS (HR 0.74, 95% CI 0.54–1.01, P 0.061). Age (HR 0.96 per year increase in age, 95% CI 0.94–0.98, P < 0.001) and Medicare payer (HR 3.31; 95% CI 1.89–5.78, P < 0.001) were independently associated with readmissions due to ICH.

Discussion

Patients admitted for ICH with a concomitant diagnosis of CAA are three times more likely to have readmissions for recurrent ICH compared to patients without CAA.

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Data availability

All data for the study are reported in the manuscript. The NRD is a publicly available data set that can be obtained after completion of the HCUP data use agreement.

Code availability

Not applicable.

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Acknowledgements

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Funding

The authors did not receive support from any organization for the submitted work.

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Authors and Affiliations

Authors

Contributions

AG: study design, statistical analysis, data interpretation, drafting and revision of the manuscript for intellectual content. SO‑G: study design, data interpretation, revision of the manuscript for intellectual content. MF: data interpretation, revision of the manuscript for intellectual content. NN: design and study conception, data interpretation, drafting and revision of the manuscript for intellectual content.

Corresponding author

Correspondence to Nandakumar Nagaraja.

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Conflicts of interest

The authors have no relevant financial or non-financial interests to disclose.

Ethical approval

The study was exempt from the Institutional Review Board review as we used a publicly available database with deidentified information.

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Not applicable.

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Not applicable.

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Garg, A., Ortega‑Gutierrez, S., Farooqui, M. et al. Recurrent intracerebral hemorrhage in patients with cerebral amyloid angiopathy: a propensity-matched case–control study. J Neurol 269, 2200–2205 (2022). https://doi.org/10.1007/s00415-021-10937-4

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  • DOI: https://doi.org/10.1007/s00415-021-10937-4

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