scholarly journals OP01.01: The risk factors for early pregnancy loss based on a logistic model following 13,977 infertile patients after in vitro fertilisation

2021 ◽  
Vol 58 (S1) ◽  
pp. 59-59
Author(s):  
Y. Ouyang ◽  
X. Li ◽  
P. Cai
Keyword(s):  
Risk Factors ◽  
Early Pregnancy ◽  
Logistic Model ◽  
Pregnancy Loss ◽  
In Vitro Fertilisation ◽  
Early Pregnancy Loss ◽  
Model Following ◽  
Infertile Patients

P–357 The risk factors for early pregnancy loss based on a logistic model following 13,977 infertile patients after in vitro fertilization

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
Y Ouyang ◽  
X Li ◽  
P Cai
Keyword(s):  
Risk Factors ◽  
Logistic Model ◽  
Pregnancy Loss ◽  
Early Pregnancy Loss ◽  
Ongoing Pregnancy ◽  
Vitro Fertilization ◽  
Gestational Sac ◽  
Infertile Patients ◽  
Ivf Et

Abstract Study question What are the risk factors for early pregnancy loss (EPL) after in vitro fertilization-embryo transfer (IVF-ET)? Summary answer The maternal age, gestational sac diameter, embryonic length, yolk sac diameter, heart rate of day 27–29 and endometrium thickness on transfer day were risk factors. What is known already: The first routine ultrasound scan is commonly arranged on day 27–29 after IVF-ET in most reproductive centers in China to determine the location and viability of the embryo. Individual maternal factors, such as a high maternal age (MA) and abnormal ultrasound parameters such as embryonic bradycardia and excessively large or small yolk sac diameter (YSD) have been shown to be associated with pregnancy failures. However, few studies focused on the risk factors of the IVF population, and little is known about the clinical meaning of ultrasound indicators of 27–29 days after transplantation. Study design, size, duration This was a retrospective study in a single reproductive centre. The infertile patients included in this study underwent IVF treatment between June 2016 to December 2017. Participants/materials, setting, methods: During this period, 13,977 women were identified with a singleton pregnancy by TVS at day 27–29 after IVF-ET. The gestational sac diameter (GSD), embryonic length (EL), embryonic heart rate (EHR) and YSD and the presence of intrauterine hematoma (IUH) were measured. The clinical characteristics were also collected. The first trimester pregnancy outcome of these women was noted at 12 weeks of gestation. A backward Wald logistic regression model was established to screen the risk factors. Main results and the role of chance 1,926 cases of spontaneous miscarriage ≤12 weeks of gestation, which were assigned as EPL and 12,051 women with an ongoing pregnancy for >12 weeks of gestation. When compared with the ongoing pregnancy group, the MA, infertility duration and transfer cycle were significantly higher, and the day–14 human chorionic gonadotrophin and the endometrium (EM) thickness on transfer day were significantly lower in the EPL group (p < 0.001). Based on the TVS measurements, the GSD (18.5±3.6 vs. 13.2±4.8 mm), EL (3.5±0.9 vs. 1.2±1.6 mm), YSD (3.6±0.4 vs. 2.6±1.5 mm) and EHR (114.5±12.2 vs. 42.4±53.5 bpm) were significantly greater in the ongoing pregnancy group than those in the EPL group (p < 0.001). The incidence of IUH (16.0% vs. 18.8%, P = 0.002) was also markedly higher in the EPL group MA, GSD, EL, YSD, EHR and EM on transfer day finally entered the logistic model after stepwise screening. The probability of EPL was: exp(z)/(1 + exp(z)), where z = 2.432 + (0.092 × MA) - (0.074 × EM) - (0.114 ×GSD) - (0.245 × EL) - (0.034 × HR) - (0.159 × YSD). Limitations, reasons for caution Data on smoking and clinical symptoms such as vaginal bleeding or abdominal pain were not included in the final analysis which might be possible risk factors. These predictors were derived from an IVF population, the situation may not be the same in the general population. Wider implications of the findings: The risk factors for EPL after IVF-ET are clearly identified in this study. The logistic model which incorporates readily available data that are routinely collected in clinical practice could be used for calculating the risk of EPL and effectively guide subsequent medical plans. Trial registration number None

scholarly journals The Chemical Pregnancy

2019 ◽  
Vol 70 (11) ◽  
pp. 3818-3823
Author(s):  
Mihai Cristian Dumitrascu ◽  
Madalina Iliescu ◽  
Razvan Cosmin Petca ◽  
Florica Sandru ◽  
Claudia Mehedintu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Early Pregnancy ◽  
Pregnancy Loss ◽  
Inhaled Corticosteroids ◽  
Antihypertensive Drugs ◽  
Polycystic Ovary ◽  
Antidepressant Medication ◽  
Chronic Hypertension ◽  
Early Pregnancy Loss ◽  
Multiple Risk Factors

The chemical pregnancy is an early pregnancy loss occurring shortly after implantation. 50-75% of all miscarriages are considered to be chemical pregnancies. Although the pregnancy test is positive, the fetus cannot be detected on ultrasounds; it can be asymptomatic or it can have menstrual-like cramping and bleeding. There are numerous risk factors associated with miscarriage, such as: epidemiological, genetic, anatomical, endometrial, endocrine and immune factors, infections, inherited thrombophilia and antiphospholipid syndrome. Many drugs are related with spontaneous miscarriage, significant evidence being found for nonsteroidal anti-inflammatory drugs, inhaled corticosteroids, antidepressant medication, antiepileptic and antihypertensive drugs, the artemisinin-based combination therapy and for the diclofenac/misoprostol combination. Besides the common diseases like asthma, chronic hypertension, chronic kidney disease, thyroid disorders, diabetes mellitus, polycystic ovary syndrome and rheumatoid arthritis, there was also found a higher correlation with the risk of miscarriage for the Zika Virus infection. In conclusion, chemical pregnancy is a type of early pregnancy loss which usually doesn�t need prevention, associated with multiple risk factors.

scholarly journals Multivariable analysis to determine risk factors associated with early pregnancy loss in thoroughbred broodmares

2019 ◽  
Vol 124 ◽  
pp. 18-23 ◽  
Author(s):  
A.M. de Mestre ◽  
B.V. Rose ◽  
Y.M. Chang ◽  
D.C. Wathes ◽  
K.L.P. Verheyen
Keyword(s):  
Risk Factors ◽  
Early Pregnancy ◽  
Pregnancy Loss ◽  
Multivariable Analysis ◽  
Early Pregnancy Loss ◽  
Factors Associated

scholarly journals Low endometrial volume may predict early pregnancy loss in women undergoing in vitro fertilization

2007 ◽  
Vol 24 (6) ◽  
pp. 259-261 ◽  
Author(s):  
Efraim Zohav ◽  
Raoul Orvieto ◽  
Eyal Y. Anteby ◽  
Octav Segal ◽  
Simion Meltcer ◽  
...  
Keyword(s):  
In Vitro Fertilization ◽  
Early Pregnancy ◽  
Pregnancy Loss ◽  
Early Pregnancy Loss ◽  
Vitro Fertilization ◽  
Endometrial Volume

Risk Factors for Early Pregnancy Loss

Epidemiology ◽  
1990 ◽  
Vol 1 (5) ◽  
pp. 382-385 ◽  
Author(s):  
Allen J. Wilcox ◽  
Clarice R. Weinberg ◽  
Donna D. Baird
Keyword(s):  
Risk Factors ◽  
Early Pregnancy ◽  
Pregnancy Loss ◽  
Early Pregnancy Loss
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