Evidence map›Paper›PMID 35869444›Full record

ArticleBMC pregnancy and childbirth2022

Reproductive outcomes of dual trigger with combination GnRH agonist and hCG versus trigger with hCG alone in women undergoing IVF/ICSI cycles: a retrospective cohort study with propensity score matching.

Li Dong, Fang Lian, Haicui Wu, Shan Xiang, Yuan Li, Chaofeng Wei, Xiaona Yu, Xin Xin

Open access · goldAbstract read
In one paragraph

Article in BMC pregnancy and childbirth, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
2.6field-weighted citation impact, top 11% 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

10 citing papers in PubMed, 14 citations in OpenAlex.

  1. Trial
  2. Article
  3. Review
  4. The Trigger in IVF Cycles: Molecular Pathways and Clinical Implications.International journal of molecular sciences · 2025
    Review
  5. Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
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

8 authors at 2 institutions in 1 country.

Li DongShandong University of Traditional Chinese Medicine, Jinan, China.
Fang LianAffiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China. lianfangbangong@163.com.
Haicui WuAffiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China.
Shan XiangShandong University of Traditional Chinese Medicine, Jinan, China.
Yuan LiAffiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan, China.
Chaofeng WeiShandong University of Traditional Chinese Medicine, Jinan, China.
Xiaona YuShandong University of Traditional Chinese Medicine, Jinan, China.
Xin XinShandong University of Traditional Chinese Medicine, Jinan, China.
Shandong University of Traditional Chinese Medicine · CNAffiliated Hospital of Shandong University of Traditional Chinese Medicine · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDespite a large number of studies on the selection of trigger drugs, it remains unclear whether the dual trigger with human chorionic gonadotropin (hCG) and gonadotropin-releasing hormone (GnRH) agonist, compared to the trigger with hCG alone, can improve the reproductive outcome of patients undergoing assisted reproductive technology. Therefore, this study aimed to compare the laboratory and clinical outcomes of dual trigger versus single trigger.

methodsIn this retrospective cohort study, we evaluated 520 in vitro fertilization/intracytoplasmic sperm injection (IVF/ICSI) cycles between July 2014 and September 2020 at the Reproductive and Genetic Center of Integrative Medicine, The Affiliated Hospital of Shandong University of Traditional Chinese Medicine. All patients underwent IVF/ICSI treatment with fresh embryo transfer using the GnRH antagonist protocol. We used propensity score matching to control for confounding variables and binary logistic regression analysis to determine the correlations between trigger methods and pregnancy outcomes. After propensity score matching, 57 cycles from each group were evaluated and compared for laboratory or clinical outcomes in this retrospective cohort study.

resultsThere was no significant difference in the number of oocytes retrieved, embryos available, top-quality embryos, or the rate of normal fertilization between the dual-trigger and single-trigger protocols, respectively. The incidence of ovarian hyperstimulation syndrome, implantation rate, biochemical pregnancy rate, clinical pregnancy rate, ectopic pregnancy rate, early miscarriage rate, and live birth rate were also similar between the two groups, while the miscarriage rate (37.0% vs. 12.5%, p = 0.045) was higher in the dual-trigger than the single-trigger group. Subsequent binary logistic regression analysis showed that age was a remarkably significant independent predictor of both clinical pregnancy rate (odds ratio = 0.90, 95% confidence interval: 0.84-0.97, p = 0.006) and live birth rate (odds ratio = 0.89, 95% confidence interval: 0.82-0.97, p = 0.005).

conclusionsTherefore, dual-trigger for final oocyte maturation might increase miscarriage rate, but in terms of the laboratory and other pregnancy outcomes such as clinical pregnancy rate, early miscarriage rate or live birth rate, there was no evidence to show that dual trigger was superior to an hCG-trigger alone for patients undergoing GnRH-antagonist cycles with fresh embryo transfer.

trial registrationRetrospectively registered.

Indexed as

Abortion, SpontaneousSperm Injections, IntracytoplasmicChorionic GonadotropinFemaleFertilization in VitroGonadotropin-Releasing HormoneHormone AntagonistsHumansMaleOvulation InductionPregnancyPregnancy RatePropensity ScoreReproductive Techniques, AssistedRetrospective StudiesSemenChorionic GonadotropinGonadotropin-Releasing HormoneHormone AntagonistsClinical outcomesDual triggerFresh embryo transferGnRH antagonist protocolsLaboratory outcomesPropensity score matching

Identifiers

PMID35869444
PMCPMC9308204
OpenAlexW4286561539

What OpenQuestion holds

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LicenceCC BY
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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.