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at what gestation age does a baby start "practicing" breathing?

i am currently pregnant. and they have me as 34 weeks. however i think i am actually about 2 weeks ahead of that. the baby is weighing in from my last U/S 2 weeks ago a pound more than average. and his lungs are already developed and "practicing" breathing. along with everything else. to me it would make more since to be about 2 weeks further along than what they think because of the time around me getting pregnant there was a lapse in my birth control. and i was supposed to be safe for 3 weeks. but the instructions me being two weeks further would put me right at the time i messed up my B/C. and opinions? what gestational age does the lungs start functioning?


Asked by sweetestkitten at 11:44 AM on Jan. 2, 2011 in Pregnancy

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Answers (5)
  • They say at around 32 weeks they will start practice breathing. The baby isn't considered as full developed until 37 weeks but most doctors won't consider lungs as developed until 39 weeks without an amniocentesis. LINK


    Answer by But_Mommie at 11:57 AM on Jan. 2, 2011


    Answer by Anonymous at 11:58 AM on Jan. 2, 2011

  • yes i know this. but i am wondering at what gestational age are the lungs developed? at my last U/S two weeks ago they said he is already practicing breathing. i thought this didn't occur until 36 weeks?

    Comment by sweetestkitten (original poster) at 11:54 AM on Jan. 2, 2011

  • Usually doctors are pretty on target...

    Answer by sissy0604 at 12:33 PM on Jan. 2, 2011

  • Birth

    Answer by gammie at 11:52 AM on Jan. 2, 2011