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Blood type?

I'm type O and the father is A neg. So I've heard my baby will have neg. Is this true? Just curious.

Answer Question

Asked by sissy0604 at 11:29 PM on Apr. 7, 2011 in General Parenting

Level 16 (2,692 Credits)
Answers (3)
  • Rh factor (the negative or positive) is a genetic trait. 15% of people have Rh negative blood type (you can be A, B, AB or O, positive or negative). Rh negative factor is a recessive trait. Is your blood type positive or negative? If it's negative then yes, your baby will be Rh negative. If it's positive then your baby will have a positive Rh factor.

    This is only a problem if you are Rh negative and have a sensitizing event in your pregnancy (an injury or such that would cause the baby's blood to mix with yours). After a sensitizing event (which can include labor), your body can make antibodies to the baby's blood and cause hemolysis (destruction of the baby's blood cells). Most women have no trouble in their first pregnancies with an Rh positive baby, it's subsequent babies that are at the most risk.

    Answer by Ati_13 at 11:38 PM on Apr. 7, 2011

  • Should add, that there is a vaccine for Rh sensitivity called RhoGam. It's routinely given to women at 28 weeks gestation, within 72 hours of a sensitizing event and at birth to prevent sensitization to Rh factor. Including to women having their first babies. This makes Rh factor almost a non-issue.

    Answer by Ati_13 at 11:40 PM on Apr. 7, 2011

  • Just wanted to add that if you are pos, it's a non issue. The only time there could be a problem is if you are rh- and the baby is rh+, if you are + it doesn't matter what baby is, you won't produce antibodies and if you and baby are both neg you won't produce antibodies. So if you and hubby are both neg then baby will be neg too.

    Really it's not a huge problem as long as your ob, dr or midwife is aware of your rh status. I'm rh- and have had three healthy pregnancies and three very healthy rh+ babies. It's part of the routine blood testing they do at the beginning of pregnacy at your first dr visit.

    Answer by canadianmom1974 at 12:04 AM on Apr. 8, 2011

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