For patients with severe male factor evidence suggests higher clinical pregnancy and lower miscarriage rates [ 36].
The drug didn't affect mothers, and it didn't lower miscarriage incidence; in fact, it significantly increased it.
But the lower miscarriage rate among pregnancies reported by ITS-GWV compared with all GWV responders, a pattern not present for NGWV, is consistent with GWV being more likely to respond to the study if they had experienced a miscarriage.
Moreover, given the short half-life compared with CC and the absence of long-lasting antiestrogenic negative effects, clinical use of AIs may be expected to be associated with higher pregnancy rates and/or lower miscarriage rates.
A number of studies suggest the positive effect of PGS on clinical outcomes, with an increase implantation rates (Munné et al., 2003; Wilton et al., 2003), lower miscarriage rates (Gianaroli et al., 1999) and increased live birth rates (Verlinsky et al., 2005).
It is not known exactly how or why acupuncture helps, but various studies have been done and have shown that 50 percent of women receiving acupuncture and in vitro fertilization become pregnant and also have a lower rate of miscarriage and stillbirth.
Indeed, there is a lower rate of miscarriage among women with nausea and vomiting of any severity; even hyperemesis gravidarum most often results in a good outcome.
As the association guidelines point out, "numerous studies have documented a lower rate of miscarriage among women with nausea and vomiting of pregnancy and hyperemesis gravidarum when compared to controls".
Still, the findings add to a large body of evidence linking nausea and vomiting to a lower risk of miscarriage, Dr. Siripanth Nippita, a reproductive health researcher at Harvard Medical School in Boston, noted in an accompanying editorial.
Another RCT [ 65] testing tinzaparin sodium (an LMWH) versus aspirin showed a lower rate of miscarriage in the LMWH group (N = 31) compared to the aspirin group (N = 31), though statistically insignificant (RR = 0.55, 95% CI: 0.23 1.29) [LOE: 2+].
