most common cause of abortions

[voicesinmyhead]

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What's the most common cause of 1st trimester abortions?

Trisomy 16 or Turners syndrome?

On that note, does anyone know what the most common cause of 2nd (downs?) and 3rd trimester abortions are?

thanks

 

[walakin25]

trisomy 16.. i had to look that up haha

 

[tasar1898]

Hope the question writers ain't so sick-minded to ask about these stuff... I only know that trisomies in general are common cause of abortion...

 

[TheBDP]

Trisomy 16 is incompatible with life, whereas Turner's has a ~1% chance of being viable.

 

[masaraksh]

Trisomy 16 is incompatible with life, whereas Turner's has a ~1% chance of being viable.

You could have idiopathic imprinting of entire third copy of chromosome 16 in which case it could be viable and worthy of a case report.

 

[voicesinmyhead]

Hope the question writers ain't so sick-minded to ask about these stuff... I only know that trisomies in general are common cause of abortion...

@tasar1898 this is only for 1st trimester abortions right?

 

[tasar1898]

yep , trisomies and high dose teratogens can cause 1st trimester abortion

 

[tvelocity514]

I think X-linked monosomy is the most common chromosomal cause followed by trisomy 16(which is the most common trisomy cause)

I honestly didn't know we had to know stuff like this and we weren't taught it lol

Source: https://en.m.wikipedia.org/wiki/Trisomy_16

 

[voicesinmyhead]

Wonder whats the MCC of second trimester abortions are? Heard somewhere its downs. Maybe I'm wrong.

 

[DandyLion]

The most common cause of 2nd trimester SAB are maternal factors (e.g. Uterine anomalies, cervical insufficiency, etc). Chromosomal abnormalities only account for roughly a quarter of 2nd trimester SABs with trisomy 13, 18, and 21, monosomy X, and the sex chromosome polysomies being most common.

http://www.aafp.org/afp/2007/1101/p1341.html