'UltraGUD LP'-ultrasound guided diagnostic LP-a randomizedcontrolled trial. Traditional landmark based lumbar puncture is as effective as ultrasound guided lumbar puncture in outpatient neurology settings.

Front Neurol · 2025 · PMC11933744 · PMID 40134695

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a clear trendno p-value reported

Comparison of US-LP to LM-LP in high-risk populations showed a clear trend toward higher success rates, which could have reached significance levels had the sample size been higher.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.