Are relationship between catheter contact force and radiofrequency lesion size and incidence of steam pop in the beating canine heart : electrogram amplitude , impedance , and electrode temperature poor predictors of electrode-tissue contact force and lesion size?
Radiofrequencylesion size and the incidence of steam pop increase strikingly with increasing CF. Electrogram parameters and initial impedance are poor predictors of CF for radiofrequency ablation.
Male newborns conceived by IVF have a 5-fold increased risk of hypospadias, which may be related to maternal progesterone administration, or other maternal or fetal endocrine abnormalities that may or may not be related to infertility. Health care providers should be aware of this risk so that they can properly counsel infertile couples seeking assisted reproduction by IVF technology.