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Neurology (Expert Forum)
Phrenic nerve damage
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Phrenic nerve damage
by Vengu, Aug 26, 2006 12:00AM
My nephew is 35 days old and is currently in the Royal Childrens Hospital. My sister experienced a traumatic birth and baby's right shoulder was dislocated. They believed due to the birth it was Erbs Palsy, but then we found that his left lung was smaller and working harder, resulting in difficult breathing. After further teast they found he had phrenic nerve damage to his right. The doctors say his diaphram is working too hard and moving upwards which is not allowing for room for his lung to delevop and an opperation is required where they will fold the diaphram in half to allow the lung to mend. Last night he slept on his stomach for several hours, as this seems to be a comfortable position for him, and this morning, he was not able to move his head from his left to his right. The doctors believe this could be a delayed side effect caused by the stressed nerve. The nerve is not srvered but "stretched" about 10 cm. My sister is worried about the opperation and now the fact that he seems unable to move his head to his right. His arm is strong, although his grip is slightly less than the arm which did not have the damage. Is shoulder dystocia and phrentic nerve damage common in newborns and why did this happen? Please and Thank you
Doctor's Answer
by CCF-Neuro-M.D.-SH, Aug 27, 2006 12:00AM
First of all, keep in mind that I am unable to diagnose you because I am unable to examine you, this forum is for educational purposes.
The nerves that go to the arm (C5-T1-brachial plexus) and the nerves that go to the diaphram (C3-C5-phrenic nerve) originate from the spinal cord at the level of the neck, then pass under neath the clavicle to their targets in the arm/chest respectively. When a traumatic birth occurs, the baby gets stuck in the birth canal (usually at the symphsis pubis) and great force is often needed to remove the baby. When the head is pulled, it stretches the nerves that are going to the arm/diaphram and can cause injury. the worse type injury is called avulsion injury, where the nerve roots are torn away from the spinal cord, this is the worst injury and does not recover. Second is a rupture injury, where the nerve is torn, but not completely, an prognosis is variable. The most common is the "stretch" injuries that can have different degrees of severity, but most recover in 3-6 months. Brachial plexus injuries are one of the most common obestrical injuries and they are sometimes associated with phrenic nerve injury as well. There are also other possibilities that should be considered by your doctors, including brachial plexus injury in utero by amniotic bands, infection such as chicken pox and/or uterine positioning (although these are much more rare). An EMG done in the first week can differentitate in utero vs birth trauma). Now at 35 days (It takes 3 weeks to evaluate birth trauma), an EMG can help to quantify the extent of damage, (axon loss vs demyelination/conduction block- effects of the stretch). The head moving is controlled by cranial nerve XI (spinal accessory nerve->sternocleido mastoid muscle) as well as support from cervical muscles and may be partially affected by the injury.
It is unfortunate that your nephew has had this complication, but you are not alone, this is a fairly common injury, overall. I would trust your doctors opinion about the surgery, and I hope all goes well.
I hope this has been helpful.
The nerves that go to the arm (C5-T1-brachial plexus) and the nerves that go to the diaphram (C3-C5-phrenic nerve) originate from the spinal cord at the level of the neck, then pass under neath the clavicle to their targets in the arm/chest respectively. When a traumatic birth occurs, the baby gets stuck in the birth canal (usually at the symphsis pubis) and great force is often needed to remove the baby. When the head is pulled, it stretches the nerves that are going to the arm/diaphram and can cause injury. the worse type injury is called avulsion injury, where the nerve roots are torn away from the spinal cord, this is the worst injury and does not recover. Second is a rupture injury, where the nerve is torn, but not completely, an prognosis is variable. The most common is the "stretch" injuries that can have different degrees of severity, but most recover in 3-6 months. Brachial plexus injuries are one of the most common obestrical injuries and they are sometimes associated with phrenic nerve injury as well. There are also other possibilities that should be considered by your doctors, including brachial plexus injury in utero by amniotic bands, infection such as chicken pox and/or uterine positioning (although these are much more rare). An EMG done in the first week can differentitate in utero vs birth trauma). Now at 35 days (It takes 3 weeks to evaluate birth trauma), an EMG can help to quantify the extent of damage, (axon loss vs demyelination/conduction block- effects of the stretch). The head moving is controlled by cranial nerve XI (spinal accessory nerve->sternocleido mastoid muscle) as well as support from cervical muscles and may be partially affected by the injury.
It is unfortunate that your nephew has had this complication, but you are not alone, this is a fairly common injury, overall. I would trust your doctors opinion about the surgery, and I hope all goes well.
I hope this has been helpful.
Member Comments (2)
by mike1105, Aug 28, 2006 12:00AM
go to a website for Dr. Raul Nath... he's a specialist in this area.
