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Open research questions in Intracerebral and Subarachnoid Hemorrhage Research

529 gap statements mined from Intracerebral and Subarachnoid Hemorrhage Research papers in our 7.9M-paper local library, which holds 1,742 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • The study highlights the need for further research to elucidate the mechanisms underlying the neuroprotective effects of liposomal curcumin nanocarrier.

    Liposomal curcumin nanocarrier ameliorates synaptic dysfunction after intracerebral hemorrhage · 2026 · DOI

  • The current literature lacks knowledge on how AI algorithms are affected by radiological mimics. The systematic failure modes of AI algorithms are not clearly explained in the current literature. There is a need to analyze the specific radiological errors that confuse the algorithm.

    Real-world performance and misclassification patterns of deep learning for intracranial hemorrhage detection · 2026 · DOI

  • Prior work has limitations due to differences in dataset composition, class definitions, preprocessing protocols, and evaluation procedures.

    An Explainable Multi-Model Ensemble for Brain Hemorrhage Detection and Subtype Classification Using 34,366 NCCT Images · 2026 · DOI

  • Private datasets often lack detailed information about patient population characteristics and imaging protocols, which may hinder the performance of AI algorithms in real-world settings. Methodological heterogeneity across the included studies was anticipated, including differences in patient population, dataset size, imaging protocols, model design, and reference standards.

    Diagnostic Accuracy of Machine and Deep Learning Methods in Intracranial Hemorrhage Detection: A Systematic Review and Meta-Analysis · 2026 · DOI

  • Serpin A3 is a well-known marker of reactive astrocytes, yet its role in vascular degeneration in cerebral amyloid angiopathy and Alzheimers disease remains poorly defined.

    Serpin A3 is Increased in Cerebral Amyloid Angiopathy and ARIA · 2026 · DOI

  • However, the role and mechanism of EGCG in regulating reactive astrocytes (RAs) to alleviate WMI after SAH remain unclear.

    EGCG-loaded nanoparticles attenuate post-SAH white matter injury by targeting HO-1/S100A10 to suppress oxidative stress-induced reactive astrocytes · 2026 · DOI

  • Trimethylamine-N-oxide (TMAO), a metabolite produced by gut microbiota, has been linked to brain disease; however, its role in intracerebral hemorrhage (ICH) remains unclear.

    Microbial metabolite trimethylamine N-oxide exacerbated microglial-mediated neuroinflammation in hemorrhagic stroke · 2026 · DOI

  • While prehospital triage protocols for suspected large vessel occlusion (LVO) improve ischemic stroke outcomes, their impact in spontaneous intracerebral hemorrhage (sICH) remain uncertain.

    Impact of prehospital comprehensive stroke center vs. primary stroke center triage protocol on outcome of patients with spontaneous intracerebral hemorrhage · 2026 · DOI

  • While the role of surgery in intracerebral hemorrhage (ICH) remains controversial, endoscopic surgery (ES) has demonstrated efficacy for lobar ICH in clinical trials.

    Efficacy of robot-assistant visualized minimally invasive aspiration (RAVMIA) for lobar intracerebral hemorrhage · 2026 · DOI

  • Given that only male animals were included, further studies incorporating female subjects are warranted to determine whether sex-specific differences influence necroptotic signaling or therapeutic responsiveness.

    Scalp acupuncture modulates RIP1/RIP3/MLKL-mediated necroptosis and neuroinflammation after intracerebral hemorrhage in male rats · 2026 · DOI

  • It remains uncertain whether remote ischemic conditioning (RIC) with transient cycles of limb ischemia and reperfusion is an effective supplement to standard-of-care management of intracerebral hemorrhage (ICH).

    The effect of remote ischemic condition on hematoma growth in patients with Intracerebral Hemorrhage: a subgroup analysis from the RESIST trial · 2026 · DOI

  • Compared to community-onset intracerebral hemorrhage (ICH), in-hospital ICH is understudied despite its potentially increased morbidity and mortality.

    In-hospital intracerebral hemorrhage: A comprehensive characterization of a provincial cohort · 2026 · DOI

  • Early systolic blood pressure (SBP) lowering is standard after spontaneous intracerebral hemorrhage (ICH), but renal effects of rapid or sustained reductions in clinical practice remain uncertain.

    Systolic blood pressure trajectories and acute kidney injury after spontaneous intracerebral hemorrhage · 2026 · DOI

  • Although TRPV1 activation contributes to intracerebral hemorrhage (ICH) pathology, its microglia‐specific role and underlying mechanisms remain poorly defined.

    Inhibition of Microglial TRPV1 Ameliorates Brain Injury After Intracerebral Hemorrhage by Suppressing AMPK / PINK1 ‐Mediated Mitophagy · 2026 · DOI

  • Sestrin2 (SESN2) regulates redox homeostasis, but its role in SAH-induced ferroptosis remains unclear.

    Sestrin2 Mitigates Neuronal Ferroptosis Following Subarachnoid Hemorrhage via Orchestration of the AMPK / PGC1α /Nrf2 Signaling Axis · 2026 · DOI

  • Examining the performance of AI algorithms in resource-limited settings or outside regular working hours. Developing AI models that can detect ICH and its subtypes with high accuracy in heterogeneous imaging protocols and patient populations.

    Diagnostic Accuracy of Machine and Deep Learning Methods in Intracranial Hemorrhage Detection: A Systematic Review and Meta-Analysis · 2026 · DOI

  • Investigating the causal link between Lipo-Cur and neuroprotection using specific pathway blockers, - Exploring the effects of Lipo-Cur on female…

    Liposomal curcumin nanocarrier ameliorates synaptic dysfunction after intracerebral hemorrhage · 2026 · DOI

  • The study was retrospective, - The requirement for written informed consent was waived, - Information regarding preadmission statin or other lipid-lowering therapy was not consistently available, - The study had a limited sample…

    Admission low-density lipoprotein cholesterol and early haematoma expansion after spontaneous intracerebral haemorrhage · 2026 · DOI

  • Independent replication and external validation are required, - Further studies should investigate the association between LDL-C and HE in different disease contexts, - The role of lipid-related associations in HE should be…

    Admission low-density lipoprotein cholesterol and early haematoma expansion after spontaneous intracerebral haemorrhage · 2026 · DOI

  • The study had a convenience sample of CSF specimens, - The sample size was limited, - The study did not investigate the mechanisms underlying the associations between CSF cytokines…

    Cytokine markers in intracerebral hemorrhage are linked to ventricular imaging and outcomes · 2026 · DOI

  • Further studies are needed to investigate the mechanisms underlying the associations between CSF cytokines and outcomes, - Studies should examine the potential of CSF cytokines as biomarkers for disease progression and therapeutic response, - Research should focus on developing therapeutic strategies to target CNS inflammation…

    Cytokine markers in intracerebral hemorrhage are linked to ventricular imaging and outcomes · 2026 · DOI

  • Clinical validation of the ensemble model is required, - Further research can be done to improve the performance of the model, - Exploring other CNN architectures and ensemble methods may lead to better…

    An Explainable Multi-Model Ensemble for Brain Hemorrhage Detection and Subtype Classification Using 34,366 NCCT Images · 2026 · DOI

  • The role of transferrin in neuronal ferroptosis after ICH is not well understood - Clinical observations contradict the predicted harmful effect of transferrin - The mechanisms by which transferrin affects ferroptosis…

    Transferrin restrains rather than drives neuronal ferroptosis after intracerebral haemorrhage · 2026 · DOI

  • The reduction of DTR from baseline did not reach statistical significance, likely limited by the small number of cases, - The study may have placed less focus on hemorrhagic stroke measures compared to ischemic stroke, - The specific antithrombotic medications and reversal agents used were not consistently…

    Improve time to anti-coagulation reversal for hemorrhagic strokes · 2024 · DOI

  • More intensive systems interventions may be needed to achieve the target DTR time for hemorrhagic strokes, - ICH-focused, multidisciplinary stroke response teams may be explored, - Further research on the management of OAC-ICH…

    Improve time to anti-coagulation reversal for hemorrhagic strokes · 2024 · DOI

Most-cited papers in Intracerebral and Subarachnoid Hemorrhage Research

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Open questions raised by papers listed on this page include: (1) There is a need to analyze the specific radiological errors that confuse the algorithm (“Real-world performance and misclassification patterns of deep learning for…”, 2026); (2) The role and mechanism of EGCG in regulating reactive astrocytes (RAs) to alleviate WMI after SAH remain unclear (“EGCG-loaded nanoparticles attenuate post-SAH white matter injury by targeting…”, 2026); (3) Trimethylamine-N-oxide (TMAO), a metabolite produced by gut microbiota, has been linked to brain disease; however, its role in intracerebral hemorrhage (ICH) remains unclear (“Microbial metabolite trimethylamine N-oxide exacerbated microglial-mediated…”, 2026); (4) While the role of surgery in intracerebral hemorrhage (ICH) remains controversial, endoscopic surgery (ES) has demonstrated efficacy for lobar ICH in clinical trials (“Efficacy of robot-assistant visualized minimally invasive aspiration (RAVMIA)…”, 2026); (5) Given that only male animals were included, further studies incorporating female subjects are warranted to determine whether sex-specific differences influence necroptotic signaling or therapeutic responsiveness (“Scalp acupuncture modulates RIP1/RIP3/MLKL-mediated necroptosis and…”, 2026). 529 gap statements have been mined from Intracerebral and Subarachnoid Hemorrhage Research papers in our 7.9M-paper local library, which holds 1,742 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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