I had not heard of this problem. You'll have to hope like hell that your doctor has and knows the protocol to prevent it.
1 in 4 have delirium post stroke from this research:
Delirium – an overlooked complication of stroke
Early-onset delirium after spontaneous intracerebral hemorrhage
First Published December 7, 2021 Research Article Find in PubMed
Abstract
Objective
This study aimed at identifying the incidence, predictors, and impact on long-term mortality and dementia of early-onset delirium in a cohort of patients with spontaneous intracerebral hemorrhage.
Methods
We prospectively recruited consecutive patients in the Prognosis of InTra-Cerebral Hemorrhage (PITCH) cohort and analyzed incidence rate of early-onset delirium (i.e. during the first seven days after intracerebral hemorrhage onset) with a competing risk model. We used a multivariable Fine-Gray model to identify baseline predictors, a Cox regression model to study its impact on the long-term mortality risk, and a Fine-Gray model adjusted for pre-specified confounders to analyze its impact on new-onset dementia.
Results
The study population consisted of 248 patients (mean age 70 years, 54% males). Early-onset delirium incidence rate was 29.8% (95% confidence interval (CI) 24.3–35.6). Multivariate analysis showed that pre-existing dementia (subhazard ratio (SHR) 2.08, 95%CI 1.32–3.32, p = 0.002), heavy alcohol intake (SHR 1.79, 95%CI 1.13–2.82, p = 0.013), and intracerebral hemorrhage lobar location (SHR 1.56, 95%CI 1.01–2.42, p = 0.049) independently predicted early-onset delirium. Median follow-up was 9.5 years. Early-onset delirium was associated with higher mortality rates during the first five years of follow-up (HR 1.52, 95%CI 1.00–2.31, p = 0.049), but did not predict new-onset dementia (SHR 1.31, 95%CI 0.60–2.87).
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