Abstract | OBJECTIVE: To determine whether cycle monitoring using both serum E(2) and ultrasound findings yields superior clinical pregnancy rates during IVF-embryo transfer (ET) compared to monitoring with ultrasound alone. DESIGN: Prospective, randomized, multicenter, patient-blinded study. SETTING: Four assisted conception units in the United Kingdom. PATIENT(S): Two hundred ninety-seven women believed to be normal responders undergoing IVF treatment. INTERVENTION(S): Patients were randomly allocated on day 7 of stimulation to one of the two hCG administration criteria: [1] the E(2)-to-follicle > or =11 mm ratio was between 250 and 500 pmol/L/follicle and at least 2 follicles reached a mean diameter of 18 mm or [2] at least 2 follicles reached a mean diameter of 18 mm and the endometrium thickness was > or =8 mm. MAIN OUTCOME MEASURE(S): RESULT(S): Two hundred ninety-seven patients were randomized to one of the two criteria groups. Of these, 288 (97%) received urinary (u)-hCG (143 in group A and 145 in group B). One hundred three women in group A (72%) met both criteria for hCG administration. Pregnancy and OHSS rates were similar (34.3% vs. 31.4% and 4.9% vs. 4.1%, respectively). CONCLUSION(S): The addition of E(2)/follicle criteria to ultrasound monitoring of IVF cycles in normal responders seldom changes the timing of hCG, and does not increase pregnancy rates or the risk of OHSS.
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Authors | Amir Lass, UK Timing of hCG Group |
Journal | Fertility and sterility
(Fertil Steril)
Vol. 80
Issue 1
Pg. 80-5
(Jul 2003)
ISSN: 0015-0282 [Print] United States |
PMID | 12849805
(Publication Type: Clinical Trial, Comparative Study, Journal Article, Multicenter Study, Randomized Controlled Trial)
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Chemical References |
- Estradiol
- Luteinizing Hormone
- Follicle Stimulating Hormone
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Topics |
- Adult
- Embryo Transfer
- Estradiol
(blood)
- Female
- Fertilization in Vitro
(methods)
- Follicle Stimulating Hormone
(blood)
- Humans
- Luteinizing Hormone
(blood)
- Male
- Oocytes
(physiology)
- Ovarian Follicle
(diagnostic imaging, physiology)
- Ovulation Induction
(methods)
- Pregnancy
- Prospective Studies
- Ultrasonography
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