An overview of assisted reproductive technology procedures

Bhandari, Harish M; Choudhary, Meenakshi; Stewart, Jane A.

doi:10.1111/tog.12509

Cited by 7 publications

(6 citation statements)

References 44 publications

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“…First, the similarly increased associations with breech observed in the ART and OI groups suggest a shared underlying mechanism likely with the OI procedures, which are common to both pathways 4 . Pregnancies conceived after OI or ART utilising OI, such as fresh and OI frozen embryo transfer (FET) cycles, have abnormally increased follicle‐stimulating hormone levels in early pregnancy.…”

Section: Discussionmentioning

confidence: 99%

“…First, the similarly increased associations with breech observed in the ART and OI groups suggest a shared underlying mechanism likely with the OI procedures, which are common to both pathways. 4 Pregnancies conceived after OI or ART util- Finally, the costs, outcomes and clinical efficacy of an additional scan at 36 weeks' gestation are topics for further research, especially given the ubiquitous remodelling of antenatal care in response to the SARS-CoV2 pandemic. 25,26 The Pregnancy Outcome Prediction (POP) prospective cohort study found that screening of nulliparous women with universal third-trimester fetal biometry tripled the detection of small for gestational age infants.…”

Section: Research Implicationsmentioning

confidence: 99%

“…Numerous ART options are now available, including IVF with or without intracytoplasmic sperm injection. In ART procedures, hormone induction through ovulation induction (OI) is an initial step used to increase the opportunity for egg retrieval and subsequent pregnancy 4 . However, OI can also be used independently to support conception.…”

Section: Introductionmentioning

confidence: 99%

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The impact of assisted reproductive technology and ovulation induction on breech presentation: A whole of population‐based cohort study

Chen

Hunt

Palmer

et al. 2023

Aust NZ J Obst Gynaeco

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Aims Multiple studies have suggested a likely association between breech presentation and assisted reproductive technology (ART) for conception. The aims were to determine whether conception via in vitro fertilisation (IVF) and ovulation induction (OI) is associated with fetal malpresentation at birth and to ascertain what mediating factors most significantly contribute to fetal malpresentation. Methods This whole‐population‐based cohort study included 355 990 singleton pregnancies born in Queensland, Australia, between July 2012 and July 2018. Multinomial logistic regression models estimated the adjusted odds of breech, transverse/shoulder and face/brow malpresentations in pregnancies conceived via spontaneous conception, OI (OI group) and IVF with or without intracytoplasmic sperm injection (ART group). Results After adjustment for potential confounding factors, breech presentation occurred approximately 20% more often in singleton pregnancies conceived via both ART (adjusted odds ratio: 1.20, 95% confidence interval: 1.10–1.30, P < 0.001) and OI (1.21, 95% confidence interval: 1.04–1.39, P < 0.05). No significant associations were observed between the three modes of conception and transverse/shoulder or face/brow presentations. Low birthweight was found to be the most significant mediating factor for breech presentation in pregnancies conceived via ART and OI. Conclusions Similar levels of increased odds of breech presentation are present in pregnancies conceived via OI and ART, suggesting a shared underlying mechanism for the aetiology of breech presentation. For women who are considering or have conceived via these methods, counselling with respect to this increased risk is recommended.

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“…First, the similarly increased associations with breech observed in the ART and OI groups suggest a shared underlying mechanism likely with the OI procedures, which are common to both pathways 4 . Pregnancies conceived after OI or ART utilising OI, such as fresh and OI frozen embryo transfer (FET) cycles, have abnormally increased follicle‐stimulating hormone levels in early pregnancy.…”

Section: Discussionmentioning

confidence: 99%

“…First, the similarly increased associations with breech observed in the ART and OI groups suggest a shared underlying mechanism likely with the OI procedures, which are common to both pathways. 4 Pregnancies conceived after OI or ART util- Finally, the costs, outcomes and clinical efficacy of an additional scan at 36 weeks' gestation are topics for further research, especially given the ubiquitous remodelling of antenatal care in response to the SARS-CoV2 pandemic. 25,26 The Pregnancy Outcome Prediction (POP) prospective cohort study found that screening of nulliparous women with universal third-trimester fetal biometry tripled the detection of small for gestational age infants.…”

Section: Research Implicationsmentioning

confidence: 99%

See 1 more Smart Citation

The impact of assisted reproductive technology and ovulation induction on breech presentation: A whole of population‐based cohort study

Chen

Hunt

Palmer

et al. 2023

Aust NZ J Obst Gynaeco

View full text Add to dashboard Cite

show abstract

“…Specimens collected were high vaginal swabs (HVS) and samples of follicular fluid collected during trans-vaginal oocyte retrieval. The IVF treatments were carried out using the standard protocol as described by Elder and Dale [ 13 ] and Bhandari et al [ 14 ] Pituitary down-regulation was achieved with a Gonadotrophin releasing hormone (GnRH) agonist injection while controlled ovarian hyper stimulation was achieved with variable amounts of human menopausal gonadotrophin (HMG), (between 75-300IU) or recombinant FSH 150IU daily (Bharat Serums and Vaccines Ltd, Ambarnath, India). Treatment was monitored by serial transvaginal ultrasound scans.…”

Section: Methodsmentioning

confidence: 99%

The presence of microorganisms in follicular fluid and its effect on the outcome of in vitro fertilization-embryo transfer (IVF-ET) treatment cycles

et al. 2021

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Objectives To determine if the presence of microorganisms in follicular fluid of women undergoing in vitro fertilization-embryo transfer (IVF-ET) adversely affects the outcome of the treatment cycles. Methods Follicular fluid was collected from 86 women enrolled for IVF-ET at the National Hospital, Abuja from June 1, 2018 to December 1, 2018. Microscopy imaging and cultures were performed to identify bacteria and fungi in the follicular fluid and the vagina. Women with follicular fluid microorganisms were the test group while the controls were those without follicular fluid microorganisms. Fertilization and pregnancy rates were subsequently determined and their association with the presence of follicular fluid microorganisms was assessed using univariable and multivariable logistic regression modelling. Results The mean age and mean Body Mass Index (BMI) of the participants were 35(± 3.5) years and 28(± 4.9) kg/m2 respectively. Bacteria and fungi were isolated in 17% of the follicular fluid samples collected (n = 15/86). Most common isolates were Streptococcus spp. (n = 4/15), Staphylococcus aureus (n = 7/15), Enterococcus spp. (n = 4/15), Lactobacillus species (n = 2/15) and Candida albicans (n = 2/15). There was no statistically significant difference in the fertilization rates (adjusted odds ratio [AdjOR] 0.55, 95% confidence interval [CI] 0.04–7.34; P = 0.10) and pregnancy rates (AdjOR 4.02, 95% CI 0.56–28.92; P = 0.19) between the group of women with positive follicular fluid bacterial /fungal colonization as compared against those with negative follicular fluid colonization. Conclusion Isolation of microorganisms from follicular fluid did not adversely affect fertilization and pregnancy rates following IVF-ET treatment cycles at the fertility centre of National Hospital, Abuja.

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“…Many thanks to Bhandari and co‐authors for their comprehensive review of assisted reproductive technology procedures . As a maternal fetal medicine sub‐specialist, I heartily applaud the policy of single embryo transfer.…”

mentioning

confidence: 99%

Re: An overview of assisted reproductive technology procedures

Bowyer

2019

The Obstetric & Gynaecologis

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An overview of assisted reproductive technology procedures

Cited by 7 publications

References 44 publications

The impact of assisted reproductive technology and ovulation induction on breech presentation: A whole of population‐based cohort study

The impact of assisted reproductive technology and ovulation induction on breech presentation: A whole of population‐based cohort study

The presence of microorganisms in follicular fluid and its effect on the outcome of in vitro fertilization-embryo transfer (IVF-ET) treatment cycles

Re: An overview of assisted reproductive technology procedures

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