chemical pregnancy

slight, unsustained rise in HCG levels.

Farlex Partner Medical Dictionary © Farlex 2012

chemical pregnancy

Pregnancy resulting from in vitro fertilization or other reproductive technology, characterized by low levels of HCG and usually miscarriage prior to implantation.

chem·i·cal preg·nan·cy

(kem'i-kăl preg'năn-sē)

Slight, unsustained rise in levels of human chorionic gonadotropin.

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

References in periodicals archive

Documentation by the physician that signals that 631.0 should be reported might include a reference to biochemical pregnancy, chemical pregnancy, or an inappropriate level of quantitative hCG for gestational age in early pregnancy.

Change has come again to ICD-9 diagnostic codes: new codes were unveiled on October 1 to report elective cesarean delivery, ART pregnancy, and vaginal mesh complications, to name a few

There was no difference between the study and control groups regarding chemical pregnancy (36.4% vs.

Outcome measures of cycles in study and control groups Transdermal Oral Parameter (Unit) patch (n=45) (n=45) P-value Implantation rate 20.45% 11.7% 0.13 Chemical pregnancy 16 (36.4%) 13 (31%) 0.65 rate/cycle Clinical pregnancy 16 (36.4%) 12 (28.6%) 0.29 rate/cycle Clinical 0 (0%) 2 (4.8%) 0.23 abortion rate

A comparison of the effects of transdermal estradiol and estradiol valerate on endometrial receptivity in frozen-thawed embryo transfer cycles: a randomized clinical trial

Of the 2,350 couples in the main study, 765 women were selected by the outcome of their first IVF cycle (failed implantation, chemical pregnancy, spontaneous abortion, or live birth).

A chemical pregnancy was defined by a post-ET hCG measurement of [greater than or equal to] 5.0 mIU/mL with no further embryonic development (gestational sac or yolk sac).

Association of Hexachlorobenzene (HCB), dichlorodiphenyltrichloroethane (DDT), and dichlorodiphenyldichloroethylene (DDE) with in vitro fertilization (IVF) outcomes

Chemical pregnancy was detected by serum hCG determination 14 days after embryo transfer (ET) and was confirmed with second HCG determination on 16 days after ET and transvaginal ultrasound scan was scheduled 2 weeks later to detect the gestational sac of pregnancy.

This study has shown no statistical difference with respect to chemical pregnancy and clinical pregnancy between three groups.

ART outcomes in GnRH antagonist protocol (flexible) and long GnRH agonist protocol during early follicular phase in patients with polycystic ovary syndrome: a randomized clinical trial

None of the individual PCBs or PCB groupings were associated with chemical pregnancy or spontaneous abortion.

PCBs may impede IVF success: failed embryo implantation linked to exposure

No statistically significant associations between PCBs and chemical pregnancy or spontaneous abortion were found.

Serum concentrations of polychlorinated biphenyls in relation to in vitro fertilization outcomes

Increasing quartiles of PCB-153 and the sum of all measured PCB congeners were associated with significantly elevated dose-dependent odds of failed implantation, but no statistically significant associations were observed between PCBs and chemical pregnancy or spontaneous abortion.

PCBs and IVF outcomes