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The Neurosurgery
Signal.

Evidence-graded summaries across 6 clinical domains. The papers that change practice — nothing else.

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Aneurysms, AVMs, thrombectomy, flow diversion

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Latest digest preview

The Weekly Signal

April 26, 2026

Read the full digest

Executive Summary

This week's digest highlights: Adopting standardized perioperative protocols in Cushing disease may significantly reduce length of stay and readmission rates. Consider using synthetic implants for cranioplasty after decompressive craniectomy to lower reoperation rates due to bone resorption. For interlaminar endoscopic lumbar discectomy, administering mg of intrathecal ropivacaine is recommended for optimal spinal anesthesia. Preliminary evidence suggests that collateral circulation and etiology impact functional outcomes in endovascular thrombectomy for basilar artery occlusion, warranting further investigation. Deep brain stimulation for psychiatric disorders shows promise, but further validation through full-text methods is necessary before altering clinical practice.

Endovascular / Vascular

Preliminary evidence; confirm full-text methods and endpoints before changing practice.

OIn patients with basilar artery occlusion, endovascular thrombectomy is likely to yield significant functional improvement in those with good collateral circulation, but clinicians should exercise caution and engage in shared decision-making for patients with poor collaterals due to limited evidence of benefit.

High evidencePractice changing

Study snapshot

Design

Post-hoc analysis of a randomized trial

Population

Patients with basilar artery occlusion from ATTENTION trial

Intervention

Endovascular thrombectomy (EVT)

Comparator

Best medical treatment (BMT)

Primary outcome

Modified Rankin Scale 0-3 at follow-up

Why it matters

Before this study, EVT was known to be superior to BMT for basilar artery occlusion, but the benefit in patients with poor collateral circulation was uncertain. This post-hoc analysis of the ATTENTION trial shows that EVT significantly improves functional outcomes in patients with good collaterals (mRS 0-3: 65.3% vs 34.1%, p=0.004), but offers limited benefit in those with poor collaterals (27.5% vs 14.3%, p=0.388). Clinicians should strongly consider EVT for patients with good collaterals, especially those with nonatherosclerotic stroke, while individualizing treatment for poor collateral patients.

Practice change

May support using collateral status to guide EVT decision-making in basilar artery occlusion.

More context

Key details

  • Post-hoc analysis of ATTENTION trial, 238 patients with basilar artery occlusion.

High-yield

See source article for primary outcome data.

Clinical context

EVT is superior to BMT for basilar artery occlusion, but the role of collateral circulation in patient selection is unclear.

Limitations

Post-hoc analysis of a single trial (ATTENTION), limiting generalizability.Small sample size in poor collateral subgroup (n=122) may reduce power to detect differences.

Methodological critique

Post-hoc analysis with potential for unmeasured confounding despite randomized design.

Teaching pearl

When evaluating basilar artery occlusion for EVT, always assess collateral circulation on CTA. Good collaterals strongly predict benefit, while poor collaterals warrant careful shared decision-making.

Funding and COI

Not stated

Tumor / Skull Base

Consider adopting standardized perioperative protocols to potentially reduce LOS and readmission in Cushing disease.

OAdopting standardized perioperative protocols may help reduce length of stay and readmission rates in Cushing disease patients, but further high-quality studies are needed to confirm these findings.

Low evidencePractice changing

Study snapshot

Design

Multicenter retrospective study

Population

Patients with Cushing disease undergoing transsphenoidal resection at 13 US centers

Intervention

Standardized perioperative protocols

Comparator

No protocol or less formalized protocols

Primary outcome

Length of stay and 90-day unplanned readmission

Why it matters

Perioperative protocols reduce length of stay in nonfunctioning pituitary adenomas, but their impact on Cushing disease was unknown. This multicenter retrospective study of 832 patients suggests that institutions with standardized protocols have significantly shorter LOS and reduced readmission rates. Clinicians may consider adopting formal perioperative protocols, including intraoperative checklists and non-narcotic pain regimens, to improve outcomes in Cushing disease.

Practice change

May support the implementation of perioperative protocols in Cushing disease to improve outcomes.

More context

Key details

  • Retrospective analysis of RAPID consortium data from 13 US academic pituitary centers.
  • 76.9% of institutions had a postoperative protocol; 69.2% used a formal document; 23.1% had hospital policy.

High-yield

Standardized perioperative protocols are associated with reduced length of stay and readmission in Cushing disease patients undergoing transsphenoidal surgery.

Clinical context

Perioperative protocols improve outcomes in nonfunctioning pituitary adenomas, but evidence in Cushing disease is lacking.

Limitations

Retrospective design limits causal inference.Survey-based protocol characterization may not capture all practice variations.

Methodological critique

Retrospective design with potential for selection bias and unmeasured confounders.

Teaching pearl

Implementing a formal perioperative protocol with an intraoperative checklist and non-narcotic pain regimen can reduce both LOS and readmission in Cushing disease patients.

Funding and COI

Not stated