Clinical and Radiological Evolution of Idiopathic Normal Pressure Hydrocephalus: A Critical Review
Bibliographic record
Abstract
BACKGROUND: The pathophysiology of idiopathic normal pressure hydrocephalus (iNPH) remains poorly understood. While it is commonly accepted that iNPH has an insidious onset, little is known about its preclinical and early stages and its development over time. OBJECTIVES: To gain more insight into how iNPH becomes manifest clinically and radiologically, and how its major clinical symptoms evolve in non-shunted patients. METHODS: For this critical review a literature search was performed using specific search terms concerning the evolution of iNPH. Manuscripts were categorized according to their content providing information on different domains including the early manifestation of clinical features, the evolution of the three major clinical symptoms, and the development of radiological findings. RESULTS: Gait disturbance in general, is the earliest clinical symptom of iNPH. There is a gradual but variable decline within the first years resulting in a change of phenotype. Cognitive impairment varies widely depending on co-morbidities. Urinary dysfunction evolves from urinary urgency to incontinence. Radiological features of iNPH such as ventricular enlargement, enlarged subarachnoid spaces, and flattening of sulci at the parasagittal high convexity are present in the preclinical stage of iNPH, but the sequence of their appearance remains unclear as well as the impact of white matter lesions. CONCLUSIONS: The evolution of iNPH shows remarkable heterogeneity. While there is a need to define distinct clinical stages, it is also important to better identify the preclinical stages of iNPH. Assessment of treatment outcomes needs to consider the stage of the disease at the time of intervention.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.006 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.002 | 0.001 |
| Bibliometrics | 0.009 | 0.007 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.002 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".