Evidence map›Paper›PMID 27110519›Full record

ArticleJournal of reproduction & infertility

The Effect of a Newly Designed Needle on the Pain and Bleeding of Patients During Oocyte Retrieval of a Single Follicle.

Koji Nakagawa, Yayoi Nishi, Masayo Kaneyama, Rie Sugiyama, Hiroshi Motoyama, Rikikazu Sugiyama

Abstract read
In one paragraph

Article in Journal of reproduction & infertility. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
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

4 citing papers in PubMed.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Koji NakagawaDivision of Reproductive Medicine, Sugiyama Clinic, Tokyo, Japan.
Yayoi NishiDivision of Reproductive Medicine, Sugiyama Clinic, Tokyo, Japan.
Masayo KaneyamaDivision of Reproductive Medicine, Sugiyama Clinic, Tokyo, Japan.
Rie SugiyamaCenter for Reproductive Medicine and Endoscopy, Sugiyama Clinic Marunouchi, Tokyo, Japan.
Hiroshi MotoyamaCenter for Reproductive Medicine and Endoscopy, Sugiyama Clinic Marunouchi, Tokyo, Japan.
Rikikazu SugiyamaDivision of Reproductive Medicine, Sugiyama Clinic, Tokyo, Japan.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe purpose of this study was to evaluate the effect of needle type on pain and bleeding during oocyte pick-up (OPU).

methodsFrom May through November 2013, patients undergoing OPU from a single follicle without any analgesic treatment were including this study. Eligible patients (n=75) were randomized 1:1 to undergo the procedure with either a reduced needle (17 gauge body, 20 gauge tip; RN group) or a standard needle (19 gauge; SN group). Overall pain was assessed by patients using a visual analogue scale (VAS), and vaginal bleeding after the procedure was recorded. Fisher exact, t-test or Wilcoxon test were used, and p<0.05 was considered to be statistically significant.

resultsThe percentage of mature oocytes was 86.5% in the RN group and 91.7% in the SN group. Pain during OPU was significantly lower in the RN group than in the SN group (mean VAS score±SD: 3.2±2.0 cm vs. 4.9±2.2 cm, p<0.01; mean±SD). The frequency of vaginal bleeding was also significantly lower in the SN group (26.3% vs. 48.6%; p<0.05). The frequency of bleeding in the RN group was also significantly lower than that in the SN group (26.3% vs. 48.6%; p<0.05). No significant differences were found between the two groups with regard to fertilization and pregnancy rates.

conclusionThe newly designed needle significantly reduced pain and vaginal bleeding associated with single-follicle OPU in patients receiving no analgesic treatment, in comparison with a standard needle. The RN had no adverse effect on the quality of retrieved oocytes.

Indexed as

Aspiration needleBleedingOocyte aspirationPain

Identifiers

PMID27110519
PMCPMC4819210

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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.