Obstetrics and Neonatology/ Birth Induced Pda

Could a difficult and lengthy labor and birth cause the heart anomaly

known as PDA, patent ductus arteriosis; the baby's heart rate was

extremely high for approximately 4 hour of pushing. (a c-section was

then performed).

One thought on “Obstetrics and Neonatology/ Birth Induced Pda

  1. Dear mopsy-ga;

    Thank you for allowing me an opportunity to answer your interesting


    DEFINITION: Patent means "open". The “ductus arteriosus” is a blood

    vessel connecting the main vessel leading to the lungs (pulmonary

    artery) to the main vessel of the body (aorta).

    Before I tell you what Patent Ductus Arteriosus is NOT, let me first

    explain what it IS: Prior to a normal birth, the expectant mother’s

    body takes care of the oxygen needs of the fetus (the baby before

    birth) through the placenta. At this stage the fetus does not need to

    use his/her lungs so very little blood needs to go to the lungs in

    order to help them grow. The ductus arteriosus allows most of the

    blood to bypass the lungs and go the rest of the body. Following

    birth, the baby has to use his/her own lungs to breathe. At this stage

    the blood from the pulmonary artery has to go to the baby’s lungs to

    pick up oxygen instead of going through the ductus arteriosus as it

    did before birth. Ordinarily, following birth, the ductus shrinks

    gradually and eventually closes. This process normally takes a few

    hours or perhaps even a few days.

    In some infants, particularly those that are premature or those that

    have experienced respiratory distress syndrome, this blood vessel (the

    ductus) may not close all the way or may stay open. This condition is

    called Patent Ductus Arteriosus. When this occurs blood begins to

    travel in the opposite direction through this vessel than it would

    when the infant was an unborn fetus, from the aorta to the lungs.

    This, in addition to the normal blood flow from the heart to the lungs

    is too much blood for the baby’s lungs to handle and makes it

    difficult for the baby to breathe. The PDA increases the work of the

    heart and the baby can develop heart failure if the amount of blood

    flowing through the PDA is too large.

    The cause of patent ductus arteriosus is not known, and in my research

    I found no correlation between the origin of PDA and difficult or

    protracted childbirth. One theory is that PDA might have something to

    do with a “chemical” (and this is speculation) that is naturally

    produced by the body at the time of birth, or shortly thereafter that

    may cause the duct to close as the level of the chemical drops. But

    perhaps, as it is theorized, in patients with PDA, the chemical

    remains active and does not drop off normally, allowing the duct to

    stay open. The rubella virus has also been associated with those

    infants at higher risk of developing PDA.

    PDA is an abnormality which accounts for 10% of all congenital heart

    disease cases, and is higher than average in pregnancies associated

    with persistent perinatal hypoxemia (or reduced oxygen levels) or

    maternal rubella (German measles) and among babies born at high

    altitude or born prematurely. Babies with respiratory problems at

    birth may have a difficult time increasing the pressure inside the

    lungs and thus a more difficult time changing the blood flow of blood

    from the normal fetal direction to the normal newborn direction. PDA

    is also a common congenital (present at birth) heart defect and may

    occur along with other heart defects. It is twice as common in females

    as in males. The incidence is roughly 1 in 2500-5000 infants.

    I sincerely wish you and the child the best during this holiday

    season. I hope you find that that my research exceeds your

    expectations. If you have any questions about my research please post

    a clarification request prior to rating the answer. Otherwise, I

    welcome your rating and your final comments and I look forward to

    working with you again in the near future. Thank you for using Google


    Best regards;



    “Discovery Health – Diseases and Conditions”


    “Patent Ductus Arteriosus”


    “High-Risk Newborn”






    “CHDs Defined: Patent Ductus Arteriosus”


    “Patent Ductus Arteriosus”


    “Congenital Heart Defect Online Handbook”

    (Help with definitions and common abbreviations associated with CHD

    and PDA)



    Patent Ductus Arteriosus (PDA): A Parent's Guide


    By Robert J. Sommer, M.D. Associate Professor of Pediatrics

    Director, Pediatric Cardiac Catheterization Laboratory

    Division of Pediatric Cardiology, Mount Sinai Medical Center

    New York, New York



    Google ://www.google.com


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    Labor PDA

    Causes of PDA

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    Patent Ductus Arteriosus birth induced

    PDA Patent birth induced

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