Evidence map›Paper›PMID 29688482›Full record

ArticleOperative neurosurgery (Hagerstown, Md.)2018

Lumboperitoneal Shunts for the Treatment of Idiopathic Normal Pressure Hydrocephalus: A Comparison of Small-Lumen Abdominal Catheters to Gravitational Add-On Valves in a Single Center.

Madoka Nakajima, Masakazu Miyajima, Chihiro Akiba, Ikuko Ogino, Kaito Kawamura, Hidenori Sugano, Takeshi Hara, Yuichi Tange, Keiko Fusegi, Kostadin Karagiozov and 1 more

Open access · hybridAbstract readComparative Study
In one paragraph

Article in Operative neurosurgery (Hagerstown, Md.), 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed
1.5field-weighted citation impact, top 20% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 26 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 1 institution in 1 country.

Madoka NakajimaDepartment of Neurosurgery, Juntendo University School of Medicine, Tokyo, Japan.
Masakazu MiyajimaDepartment of Neurosurgery, Juntendo University School of Medicine, Tokyo, Japan.
Chihiro AkibaDepartment of Neurosurgery, Juntendo University School of Medicine, Tokyo, Japan.
Ikuko OginoDepartment of Neurosurgery, Juntendo University School of Medicine, Tokyo, Japan.
Kaito KawamuraDepartment of Neurosurgery, Juntendo University School of Medicine, Tokyo, Japan.
Hidenori SuganoDepartment of Neurosurgery, Juntendo University School of Medicine, Tokyo, Japan.
Takeshi HaraDepartment of Neurosurgery, Juntendo University School of Medicine, Tokyo, Japan.
Yuichi TangeDepartment of Neurosurgery, Juntendo University School of Medicine, Tokyo, Japan.
Keiko FusegiDepartment of Neurosurgery, Juntendo University School of Medicine, Tokyo, Japan.
Kostadin KaragiozovDepartment of Neurosurgery, Juntendo University School of Medicine, Tokyo, Japan.
Hajime AraiDepartment of Neurosurgery, Juntendo University School of Medicine, Tokyo, Japan.
Juntendo University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTreating idiopathic normal pressure hydrocephalus (iNPH) with lumboperitoneal shunts (LPSs) may cause cerebrospinal fluid (CSF) overdrainage.

objectiveTo investigate whether LPSs, including gravitational "add-on" and programmable pressure valves (PPVs/+GVs), reduce complications and improve outcomes.

methodsWe compared PPVs/+small lumen abdominal catheters (SLs) to PPVs/+GVs using different opening pressures for supine and standing positions. We analyzed 115 patients with iNPH in 2 consequent cohorts: 48 patients receiving LPSs with PPVs/+SLs and 67 patients receiving LPSs with PPVs/+GVs. The modified Rankin Scale (mRS), Japan iNPH grading scale, Mini Mental State Examination, Frontal Assessment Battery, and CSF biomarkers were evaluated.

resultsComparisons of postoperative clinical factors in 64 patients in the PPV/+SL and PPV/+GV groups using 1:1 propensity score matching revealed differences in the mean (±standard deviation) postoperative mRS (2.65 ± 1.07 vs 2.16 ± 1.02, P = .049) and gait disturbance scores (1.97 ± 1.03 vs 1.39 ± 0.92, P = .011). Thus, outcomes improved in the LPS group with the GV. Serious and nonserious adverse event rates for the PPV/+SL and PPV/+GV groups were 22.9% and 19.4% (P = .647) and 38% and 17.9% (P = .018), respectively, indicating higher rates of subdural collections for the PPV/+SL group.

conclusionThis is the first study to examine LPS treatment for iNPH using a GV in tandem with a PPV. Our results suggest that the CSF shunt flow volume is restricted in the standing position and maintained in the supine position, thus improving iNPH symptoms. This may reduce intracranial CSF hypotension-related complications.

Indexed as

CathetersCerebrospinal Fluid ShuntsAbdomenAgedAged, 80 and overFemaleGravitationHumansHydrocephalus, Normal PressureMaleTreatment Outcome

Identifiers

PMID29688482
PMCPMC6373832
OpenAlexW2800399340

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.