PMID: 9170468Jun 1, 1997Paper

The predictive value of first-trimester embryonic heart rates in infertility patients

Obstetrics and Gynecology
S M QasimE Kemmann

Abstract

To analyze whether first-trimester embryonic (fetal) heart rates (FHR) are useful in predicting pregnancy outcome for infertility patients. Patients in a university-based reproductive endocrinology and infertility practice were studied prospectively. Infertile women who achieved clinical pregnancy underwent first-trimester transvaginal sonographic evaluation, and FHR in patients achieving viable pregnancies were compared with those experiencing fetal loss. Overall, 99 pregnancies reached viability and 17 resulted in fetal loss before 20 weeks' gestation. Patient age, methods of conception, and number of previous fetal losses did not differ significantly between the two groups. A significant correlation (r = .70, P < .001) was found between increasing FHR levels and advancing gestational age in patients with viable pregnancies and, although to a weaker extent, patients who miscarried (r= .52, P < .05). A significantly higher number of viable pregnancies, compared with fetal losses, had FHR falling within one (70.7% compared with 41.2%, P < .025) and two (99.0% compared with 64.7%, P < .001) standard deviations of the mean for viable pregnancies at corresponding gestational ages. The majority of FHR of failing pregnancies fell be...Continue Reading

References

Jan 1, 1991·Gynecologic and Obstetric Investigation·N TezukaM Hiroi
Nov 1, 1990·British Journal of Obstetrics and Gynaecology·R SchatsJ W Wladimiroff
May 1, 1989·American Journal of Obstetrics and Gynecology·G J MendozaL Steinfeld

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Citations

Jan 22, 2002·Current Opinion in Pediatrics·C K Phoon
Jan 9, 2001·The Journal of Obstetrics and Gynaecology Research·Y TannirandornD Charoenvidhya
Sep 6, 2011·Fertility and Sterility·Soyoung Bae, Joseph Karnitis
Oct 18, 2005·BJOG : an International Journal of Obstetrics and Gynaecology·N S QureshiR E Hopkins
May 28, 2003·International Journal of Gynaecology and Obstetrics : the Official Organ of the International Federation of Gynaecology and Obstetrics·Y TannirandornD Charoenvidhya
Oct 7, 2003·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·G MakrydimasK H Nicolaides
Apr 30, 2005·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·E JauniauxG J Burton
Nov 5, 1999·Human Reproduction·S A BrighamR G Farquharson

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