Why would RMNS still be present a year and a half after my initial vasectomy procedure?
I had a no scalpel vasectomy January 2017. I had PVSA in June 2017 and June 2018. My urologist had no concerns and I was given the all clear. However, why would RMNS still be present a year and a half after the initial vasectomy procedure? Is this a failure?
Both ends on both sides were cut, a 1 cm section removed and both ends cauterized and tied. Complete luminal cross section was observed of the two vas after they were sent to pathology to confirm.
Answers from doctors (2)
Rare non-motile sperm (RNMS) is usually the sign of lack of clearing of the pathways as opposed to a sign of recanalization. Look up vasogram on Google and look at the pictures. The pathway sperm take is truly amazing when you think that each time a fertile man ejaculates he may be putting out over 350 million sperm (that's more than the US population). Now you have to go to zero. It's impressive it does it so quickly. The stat I quote is 1 in 2000 with RNMS achieve pregnancy. I have patients check every 3 months until they achieve 0 or get a non-motile sperm.
Published on Jul 11, 2012
Rare non-motile sperm (RNMS) after vasectomy is an uncommon finding but poorly understood how or why it happens. Unfortunately, even as a doctor, I cannot explain why this happens.
Published on Jul 11, 2012
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