Evidence map›Paper›PMID 27150671›Full record

ArticleJournal of endourology2016

Adopting Ultrasound Guidance for Prone Percutaneous Nephrolithotomy: Evaluating the Learning Curve for the Experienced Surgeon.

Manint Usawachintachit, Selma Masic, Isabel E Allen, Jianxing Li, Thomas Chi

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Journal of endourology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
4.9field-weighted citation impact, top 5% 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

27 citing papers in PubMed, 1 synthesis or guideline pooled it, 61 citations in OpenAlex.

  1. Pooled it
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  4. [Totally ultrasound guided percutaneous nephrolithotomy: An efficient and safe technique].Revista medica del Instituto Mexicano del Seguro Social · 2025
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  19. Techniques - Ultrasound-guided percutaneous nephrolithotomy: How we do it.Canadian Urological Association journal = Journal de l'Association des urologues du Canada · 2020
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 3 countries.

Manint Usawachintachit1 Department of Urology, University of California , San Francisco, San Francisco, California.
Selma Masic1 Department of Urology, University of California , San Francisco, San Francisco, California.
Isabel E Allen3 Department of Epidemiology and Biostatistics, University of California , San Francisco, San Francisco, California.
Jianxing Li4 Department of Urology, Tsinghua Changgung Hospital , Beijing, China .
Thomas Chi1 Department of Urology, University of California , San Francisco, San Francisco, California.
University of California, San Francisco · USBeijing Tsinghua Chang Gung Hospital · CNThai Red Cross Society · TH

Funding

UCSF KURe Career Development ProgramK12DK083021 · NIDDK · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI BASKIN, LAURENCE, CARROLL, PETER R · 2008 to 2017
$5.9M
NIDDK NIH HHS K12 DK083021
6 · The paper itself

Abstract

objectivesTo define the learning curve associated with adopting ultrasound guidance for prone percutaneous nephrolithotomy (PCNL) for the experienced surgeon.

methodsA prospective cohort study of consecutive patients undergoing PCNL with ultrasound guidance for renal tract access and dilation was performed. Clinical data reviewed included success in gaining renal access with ultrasound guidance, total fluoroscopic screening time, and radiation exposure dose. PCNL cases performed with fluoroscopic guidance matched for stone size served as control cases.

resultsOne hundred consecutive ultrasound-guided procedures performed by a single experienced endourologist were divided into five experience groups. Significant improvement in renal access success rate with ultrasound was seen after 20 cases (p < 0.05). Total fluoroscopic screening time, radiation exposure dose, and operative time were also statistically significantly improved over the study period. When compared with fluoroscopy-guided PCNL, significant decreases in total fluoroscopic screening time (33.4 ± 35.3 seconds vs 157.5 ± 84.9 seconds, p < 0.05) and radiation exposure (7.0 ± 8.7 mGy vs 47.8 ± 45.9 mGy, p < 0.05) were seen. No differences in complication rates were found.

conclusionsUltrasound-guided renal access for PCNL can be performed effectively after 20 cases. Transition to the use of ultrasound will quickly reduce radiation exposure for patients and intraoperative personnel.

Indexed as

Learning CurveRadiation DosageRadiation ExposureAdultAgedCase-Control StudiesFemaleFluoroscopyHumansKidneyKidney CalculiMaleMiddle AgedNephrostomy, PercutaneousOperative TimeProne Position

Identifiers

PMID27150671
PMCPMC4964751
OpenAlexW2345928182

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.