Do alterations in the sex ratio occur at fertilization?
As the sperm analysis revealed a normal X:Y ratio, an alteration in the embryo sex ratio might be explained by the preferential binding of Y-bearing sperm to the oocyte, an oocyte-related "discouragement" of binding of X-bearing sperm, or a postfertilization event.
MAs with atrial fibrillation have a higher stroke recurrence risk and more severe recurrences than do NHWs but no difference in all-cause mortality. Aggressive stroke prevention measures focused on MAs are warranted.