scholarly journals Feasibility of Continuous Distal Body Temperature for Passive, Early Pregnancy Detection

2021 ◽  
Author(s):  
Azure Dominique Grant ◽  
Benjamin Smarr
Keyword(s):  
Body Temperature ◽  
Early Pregnancy ◽  
Clinical Settings ◽  
Pregnancy Test ◽  
American Women ◽  
Positive Pregnancy Test ◽  
Early Passive ◽  
Test Result ◽  
Continuous Temperature

The majority of American women become aware of pregnancy ~3-7 weeks after conception, and all must seek testing to confirm their pregnant status. The delay between conception and awareness is often a time in which contraindicated behaviors take place. However, there is long standing evidence that passive, early pregnancy detection may be possible using body temperature. To address this possibility, we analyzed 30 individuals continuous distal body temperature (DBT) in the 180 days surrounding self-reported conception in comparison to self-reported pregnancy confirmation. Features of DBT nightly maxima changed rapidly following self-reported conception, reaching uniquely elevated values after a median of 5.5 +/- 3.5 days, whereas individuals reported a positive pregnancy test result at a median of 14.5 +/- 4.2 days. Together, we were able to generate a retrospective, hypothetical alert a median of 9 +/- 3.9 days prior to the date at which individuals received a positive pregnancy test. Continuous temperature-derived features can provide early, passive indication of pregnancy onset. We propose these features for testing and refinement in clinical settings, and for exploration in large, diverse cohorts. The development of pregnancy detection using DBT may reduce the delay from conception to awareness and increase the agency of pregnant individuals.

scholarly journals Normal and Abnormal Early Pregnancy

2011 ◽  
Vol 5 (4) ◽  
pp. 356-384
Author(s):  
Giovanni Monni ◽  
Ulrich Honemeyer
Keyword(s):  
Early Pregnancy ◽  
Color Doppler ◽  
Transvaginal Ultrasound ◽  
Lower Abdominal Pain ◽  
Fetal Life ◽  
Intrauterine Pregnancy ◽  
Pregnancy Test ◽  
Beta Hcg ◽  
Positive Pregnancy Test ◽  
Pregnancy Disorders

ABSTRACT The first trimester, mostly defined as the first 100 days of pregnancy, is characterized by many important landmarks heralding the ultimate outcome of pregnancy. Woman becomes aware of her pregnancy after missing her period, being already two weeks postconception at that time. A positive pregnancy test opens Pandora's Box, raising more questions than giving answers. Although a positive pregnancy test most likely suggests an intrauterine pregnancy, production of human chorionic gonadotropin (hCG) occurs as well in tumors (dysgerminoma, choriocarcinoma) or maldeveloped pregnancies, such as ectopic pregnancy, blighted ovum or mola hydatidosa. Other early pregnancy complications and failures, like subchorionic hematoma, missed abortion, incomplete miscarriage, retained products of conception, are likely to be accompanied by clinical symptoms such as lower abdominal pain and/or vaginal bleeding, and suboptimal beta hCG serum levels. Transvaginal ultrasound probes with frequencies of up to 14 MHz have lowered the threshold for US-detection of intrauterine pregnancy to 1200 mIu/ml beta hCG/serum (discriminatory zone), and enable identification of all above-mentioned 1st trimester pregnancy disorders earlier than ever before. Furthermore, the additional interrogation of the region of interest (ROI) with color Doppler (CD) and pulsed-wave Doppler (PW) supplies important information about characteristics of vascularization and flow indices, which assists in further differentiation and prognosis of abnormal early pregnancy findings. With the introduction of transvaginal three-dimensional (3D) sonography, and real-time 3D ultrasound (4D), in vivo studies of the early fetal life became possible. The developmental progress of the embryo and early fetus, its anatomy, and first movement patterns, have been explored by means of ultrasonic 3- and 4D imaging, which can be considered as nonteratogenic as long as investigators adhere to certain safety rules. The new field of sonoembryology has emerged, and researchers are penetrating the mists hiding the beginning of human life. Another area of remarkable expansion has been the 1st trimester scan between 11 and 13/6 weeks of gestation. It includes not only the early diagnose of fetal structural anomalies, like acranius-anencephalus sequence, and the screening for fetal aneuploidies such as trisomia 21,18 and 13, but also offers likelihood ratios for hypertensive pregnancy disorders (pre-eclampsia) and intrauterine growth restriction (IUGR).

Early pregnancy loss in patients with polycystic ovary syndrome after IVM versus standard ovarian stimulation for IVF/ICSI

2020 ◽  
Vol 35 (12) ◽  
pp. 2763-2773
Author(s):  
S Mackens ◽  
L Mostinckx ◽  
P Drakopoulos ◽  
I Segers ◽  
S Santos-Ribeiro ◽  
...  
Keyword(s):  
Polycystic Ovary Syndrome ◽  
Embryo Transfer ◽  
Early Pregnancy ◽  
Pregnancy Loss ◽  
Polycystic Ovary ◽  
Early Pregnancy Loss ◽  
Fresh Embryo Transfer ◽  
Ovary Syndrome ◽  
Pregnancy Test ◽  
Positive Pregnancy Test

Abstract STUDY QUESTION Is the incidence of early pregnancy loss (EPL) in patients with polycystic ovary syndrome (PCOS) higher after IVM of oocytes than after ovarian stimulation (OS) for IVF/ICSI? SUMMARY ANSWER Women with PCOS who are pregnant after fresh embryo transfer have a higher probability of EPL following IVM, but after frozen embryo transfer (FET), no significant difference in the incidence of EPL was observed following IVM compared to OS. WHAT IS KNOWN ALREADY There is conflicting evidence in the current literature with regard to the risk of EPL after IVM of oocytes when compared with OS. Because of the limited sample size in previous studies, the use of different IVM systems and the possible bias introduced by patient characteristics and treatment type, firm conclusions cannot be drawn. STUDY DESIGN, SIZE, DURATION This was a retrospective cohort study evaluating 800 women, with a diagnosis of infertility and PCOS as defined by Rotterdam criteria, who had a first positive pregnancy test after fresh or FET following IVM or OS between January 2010 and December 2017 in a tertiary care academic medical centre. PARTICIPANTS/MATERIALS, SETTING, METHODS Pregnancies after non-hCG triggered IVM following a short course of highly purified human menopausal gonadotropin were compared with those after conventional OS. The primary outcome was EPL, defined as a spontaneous pregnancy loss before 10 weeks of gestation. MAIN RESULTS AND THE ROLE OF CHANCE In total, 329 patients with a positive pregnancy test after IVM and 471 patients with a positive pregnancy test after OS were included. Women who were pregnant after IVM were younger (28.6 ± 3.4 years vs 29.3 ± 3.6 years, P = 0.005) and had higher serum anti-Mullerian hormone levels (11.5 ± 8.1 ng/ml vs 7.2 ± 4.1 ng/ml, P < 0.001) compared to those who were pregnant after OS. The distribution of PCOS phenotypes was significantly different among women in the IVM group compared to those in the OS group and women who were pregnant after OS had previously suffered EPL more often (28% vs 17.6%, P = 0.003). EPL was significantly higher after fresh embryo transfer following IVM compared to OS (57/122 (46.7%) vs 53/305 (17.4%), P < 0.001), while the results were comparable after FET (63/207 (30.4%) vs 60/166 (36.1%), respectively, P = 0.24). In the multivariate logistic regression analysis evaluating fresh embryo transfer cycles, IVM was the only independent factor (adjusted odds ratio (aOR) 4.24, 95% CI 2.44–7.37, P < 0.001)) significantly associated with increased odds of EPL. On the other hand, when the same model was applied to FET cycles, the type of treatment (IVM vs OS) was not significantly associated with EPL (aOR 0.73, 95% CI 0.43–1.25, P = 0.25). LIMITATIONS, REASONS FOR CAUTION The current data are limited by the retrospective nature of the study and the potential of bias due to unmeasured confounders. WIDER IMPLICATIONS OF THE FINDINGS The increased risk of EPL after fresh embryo transfer following IVM may point towards inadequate endometrial development in IVM cycles. Adopting a freeze-all strategy after IVM seems more appropriate. Future studies are needed to ascertain the underlying cause of this observation. STUDY FUNDING/COMPETING INTEREST(S) The Clinical IVM research has been supported by research grants from Cook Medical and Besins Healthcare. All authors declared no conflict of interest. TRIAL REGISTRATION NUMBER N/A.

scholarly journals Lung neoplasm mimicking as ectopic pregnancy due to paraneoplastic secretion of human chorionic gonadotropin: a case report and literature review

2021 ◽  
Author(s):  
Jin Peng ◽  
Shangge lv ◽  
Lin Liu ◽  
Shuai Feng ◽  
Naidong Xing
Keyword(s):  
Systematic Review ◽  
Ectopic Pregnancy ◽  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Lung Neoplasm ◽  
High Serum ◽  
Pregnancy Test ◽  
Positive Pregnancy Test ◽  
Β Hcg ◽  
Present Systematic Review

Abstract Purpose The present systematic review aimed to examine the relationship between lung neoplasm and human chorionic gonadotropin (HCG). Especially, women with lung neoplasm mimicking as ectopic pregnancy were explored. Methods A rare case of lung neoplasm with high serum β-HCG, which was initially thought to be ectopic pregnancy, was reported. A literature search was performed of the US National Library of Medicine (MEDLINE), EMBASE, PubMed, and the Cochrane Database of Systematic Reviews using appropriate keywords and subject headings to February 2020. Results Studies assessed lung neoplasm patients with positive HCG were included. Twenty studies, including 24 patients, were included. These cases illustrate the importance of considering the possibility of paraneoplastic secretion of β-HCG in patients who have a positive pregnancy test. This may prevent a delay in the diagnosis and treatment of malignancy in young women. Of the 24 cases, only 7 (29.17%) were managed surgically; others were managed conservatively or with chemotherapy or radiation. Conclusion The present systematic review shows the need to re-awaken awareness and high index of suspicion to lung neoplasm diagnosis in patients with positive pregnancy test.

scholarly journals A case of ruptured ectopic pregnancy involving a negative urinary pregnancy test result

2018 ◽  
Vol 34 (1) ◽  
pp. 123-127
Author(s):  
Kaori Mizuta ◽  
Junya Miyoshi ◽  
Kumiko Kuroda ◽  
Takashi Idegami ◽  
Yoshihiro Tanaka ◽  
...  
Keyword(s):  
Ectopic Pregnancy ◽  
Pregnancy Test ◽  
Test Result

P–717 Where do cryopreserved embryos end up after a positive pregnancy test?

2021 ◽  
Vol 36 (Supplement_1) ◽  
Author(s):  
E Young ◽  
S Garci Argibay ◽  
L Isa ◽  
M P Zappacost. Villarroel ◽  
R Inza ◽  
...  
Keyword(s):  
Assisted Reproductive Technologies ◽  
Search Time ◽  
Live Birth Rate ◽  
Reproductive Technologies ◽  
Miscarriage Rate ◽  
Pregnancy Test ◽  
Exact Test ◽  
Positive Pregnancy Test ◽  
Registration Number ◽  
Cryopreserved Embryos

Abstract Study question What is the destination of supernumerary embryos after a positive pregnancy test? Summary answer Half of the surplus cryopreserved embryos in assisted reproduction treatments are not transferred. What is known already Many of the surpernumerary cryopreserved embryos in assisted reproductive technologies are not transferred. This is a constant issue in many fertility centers around the world. Our objective was to report what happens with vitried surplus embryos after IVF in patients with a positive pregnancy test, carrying out an analysis according to age and final evolution of the pregnancy. Study design, size, duration This is a retrospective descriptive study. We analyzed 245 embryo transfer cycles, performed between January 2013 to December 2017, in 235 patients with a positive pregnancy test and who vitrified surplus embryos. Participants/materials, setting, methods All the patients underwent treatment with their own oocytes. The variables studied were: age, miscarriage rate (MR) and live birth rate (LBR). We compared the destination of the cryopreserved embryos according to the patient’s age and pregnancy evolution. Statistical analysis was performed with Fisher’s exact test. Main results and the role of chance 20% of the IVF cycles (n = 49) were performed in women older than 40 years, 42% between 35 and 39 (n = 103) and 38% in women younger than 35 (n = 94). Average age was 35.8 ± 4.1 years. 859 embryos were cryopreserved (3.5 ± 1.9 cryopreserved embryos/patient). Average search time for surplus embryos was 20.5 ± 17.9 months, rising to 36.9 ± 14.9 months after delivery and decreasing to 8.7 ± 7.8 months after miscarriage (P < 0.0001). Up to date there are 118 (48.2%) patients whose cryopreserved embryos have not been transferred yet. Signficant differences were found in the three groups in using the cryopreserved embryos according to whether or not they had delivery. Almost half of the surplus cryopreserved embryos are not transferred. Regardless of the age of the patient, all groups showed the same behavior regarding the utilization of the cryopreserved embryos after delivery. It is essential to advise couples who perform assisted reproductive technologies, with a good probability of success (regardless of the patient’s age), about the responsibility that embryonic cryopreservation entails. Argentine legislation has limitations regarding the availability of cryopreserved surplus embryos. Limitations, reasons for caution This is a retrospective study. Wider implications of the findings: We believe that Public Health policies related to this issue should be re evaluated based on these results. Trial registration number Not applicable

scholarly journals Hair Cortisol Concentrations as a Biomarker to Predict a Clinical Pregnancy Outcome after an IVF Cycle: A Pilot Feasibility Study

2020 ◽  
Vol 17 (9) ◽  
pp. 3020
Author(s):  
Diana C. Santa-Cruz ◽  
Rafael A. Caparros-Gonzalez ◽  
Borja Romero-Gonzalez ◽  
Maria Isabel Peralta-Ramirez ◽  
Raquel Gonzalez-Perez ◽  
...  
Keyword(s):  
Pregnant Women ◽  
Assisted Reproductive Technologies ◽  
Reproductive Technologies ◽  
Clinical Pregnancy ◽  
Hair Cortisol ◽  
Pregnancy Test ◽  
Resilience Scale ◽  
Depression Subscale ◽  
Positive Pregnancy Test ◽  
Pilot Feasibility Study

Our objective was to examine the feasibility of hair cortisol concentrations (HCC) as a biomarker to predict clinical pregnancy outcomes and investigate its potential associations with perceived anxiety, resilience, and depressive symptoms. A total of 43 participants were assessed using HCC, the state trait anxiety inventory (STAI), resilience scale (RS), and the depression subscale of the symptom checklist 90-R (SCL-90-R). Participants were approached at their second consultation with the reproductive endocrinologist (T1), before scheduling their IVF cycle, and then 12 weeks after (T2), at their post-transfer visit with the study coordinators, before the human chorionic gonadotropin (HCG) pregnancy test. The logistic regression model revealed that HCC at T2 predicted 46% of a positive pregnancy test [R2 = 0.46, (ß = 0.11, p < 0.05)]. Pregnant women had higher levels of resilience at T2 (M = 149.29; SD = 17.56) when compared with non-pregnant women at T2 (M = 119.96; SD = 21.71). Significant differences were found between both groups in depression at T2 (t = 3.13, p = 0.01) and resilience at T2 (t = −4.89, p = 0.01). HCC might be a promising biomarker to calculate the probability of pregnancy in women using assisted reproductive technologies (ART).

scholarly journals Provisionally pregnant: uncertainty and interpretive work in accounts of home pregnancy testing

2017 ◽  
Vol 22 (1) ◽  
pp. 87-105 ◽  
Author(s):  
Emily Ross
Keyword(s):  
Positive Result ◽  
Early Pregnancy ◽  
Reproductive Rights ◽  
First Trimester ◽  
Pregnancy Test ◽  
Early Gestation ◽  
Medical Technologies ◽  
The United Kingdom ◽  
Pregnancy Testing ◽  
First Trimester Of Pregnancy

Upon their availability for purchase in the 1970s, home pregnancy testing devices were hailed as a ‘revolution’ for women’s reproductive rights. Some authors, however, have described these technologies as further enabling the medicalisation of pregnancy and as contributing to the devaluing of women’s embodied knowledge. The home pregnancy test is one of many technological devices encountered by women experiencing pregnancy in the United Kingdom today. Existing literature has described how engagement with medical technologies during pregnancy might address uncertainties experienced at this time, providing women with reassurance and alleviating anxieties. Drawing on interviews with women living in Scotland, this article explores accounts of testing for a first pregnancy, and women’s descriptions of the impacts of home pregnancy testing upon experiences of early gestation. Participants engaged with pregnancy tests in varying ways, with uses shaping and shaped by their experiences of early pregnancy more broadly. Particular technical characteristics of the home pregnancy test led many participants to question their interpretation of a positive result, as well as the accuracy of the test itself. Rather than addressing the unknowns of early gestation by confirming a suspected pregnancy, a positive result could thus exacerbate uncertainty. Through participants’ accounts, this article shows how uncertainty is lived out by users of mundane techno-medical artefacts and sheds new light on women’s experiences of the first trimester of pregnancy.

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