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I read on multiple sites about how to help a queen give birth to her kittens, and almost all of them say that the cat usually chews the umbilical cord, but if she doesn't, then you have to do it. But instead of just snipping it, they want you to tie thread on either side of it. I am completely blind, and without some means to envision what is actually going on, it is very hard for me to imagine why using a thread would be necessary when I could simply feel between the kitten's body and end of the cord and snip in between.

Besides, if you tied the thread to either side of the cord and then snipped the cord, the thread (if not snipped) would hold the severed cord, and it might also pose a danger to the queen.

Here's an example of one of these articles.

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Saliva contains coagulants, so the mother chewing on the cord and licking the stump will help the blood clot, while cutting it with a blade would not clot naturally until a large amount of blood escaped—perhaps a fatal amount.

Tying the umbilical closed with a thread at the navel end will stop circulation to/from the kitten's body so you can safely cut the umbilical. Platelets will accumulate there and clot, and the umbilical stump will soon die (from lack of oxygen and nutrients) and fall off the kitten. If you tie off the placenta end too, it would be a second thread just to keep the blood in the placenta from draining out before you disposed of it.

The thread itself should be as thin as will do the job and any excess trimmed after tying the knot, so if it does end up getting eaten by the kitten or queen, it should pass through their digestive system without causing any problems.

When human babies are born in hospitals, doctors use sterile metal clamps instead of threads, but the basic idea is exactly the same.

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The umbilical cord and the placenta is a part of the kittens circulatory system.

To be sure the kitten does not bleed to death the blood vessels in the umbilical cord is tied off.

normally the mother will chew off the umbilical cord but if she don`t you need to cut it yourself.

The mother chewing off the umbilical cord will crush it this will close the blood vessels

If you have to cut it you will use a sharp object this might not give the blood vessels the signal to close or they will only close partially, this is why one has to tie it off.

Source https://www.countryvet.net/post/what-you-need-to-know-about-the-birth-of-kittens.html take a look at the section:during birth in the article.

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  • It makes sense that if you just snipped it, chances are that the cord would continue bleeding, so it is tied off, but wouldn't that also be the case if the queen just chewed it, or does her chewing clot up the hole in the umbilical cord to prevent any more bloodletting? – HeavenlyHarmony Jun 28 at 9:59
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    i added an explanation to my answer. – trond hansen Jun 28 at 10:14
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    In general are cuts with sharp objects the kind of hurt that heal very badly. For example skin would heal much more easy if the skin is ripped than if it was cut. Sometimes this would used even in hospital, for example during giving birth. (If one is under narcos or anesthetic it is equal and later it will heal more easily) – Allerleirauh Jun 28 at 12:15
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    @Allerleirauh That depends very heavily on the type of cutting/ripping. You may well be right for cutting off vs. ripping off, but for a slice across the surface, a clean cut with a sharp blade will heal far better (faster, easier, reduced chance of infection and/or scarring, etc.) than jagged tears. There is, after all, a reason why surgeons use scalpels. – KRyan Jun 28 at 16:46
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    it might be better to talk about this in our chat room the litterbox. – trond hansen Jun 28 at 18:40

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