Keep seeing so many posts on reddit about covid and the placenta and I'm not in a good way worrying about it. I haven't had a good night's sleep since testing positive and I really could do with good stories to balance the bad.
I've been going through an alternative evolution phase lately. I've been reading up on the different mammal groups, like the placentals, the metatherians and the very old groups too like the Multituberculates and the Monotremes.
It has really gotten me thinking. What if the Placental mammals or at the very least the Placentalians (which includes most of the extant mammals today) never evolved or just weren't able to dominate as within our timeline? Just what other Mammalian or Mammiliforme group/order would have appeared in their place?
Multituberculates are an interesting possibility. I've read that they managed to diversify quite a bit in the age preceeding the KPg extinction event, the Palaeocene. But apparently they faced a sharp decline in the following Eocene. I've read several possibilities as to why this came to fruition, one interesting hypothesis was that it was caused by the arrival of the Rodents (though this has been debated by some). So if Rodents never appeared, could have things turned out better for the Multituberculates? I am not sure, as it is possible that other factors may have lead to their decline, such as the forest fragmentation and receding during the proceeding epochs.
My other best guess to the mammal group that would have ended up dominating in their place is probably the Metatheria, which includes the marsupials and possibly the Monotremes could've taken more niches too.
What do you guys think?
So basically the only placental mammals left are rodents, shrews, bats and cetaceans.
And because the vast majority of grazers are placental mammals, would this cause a period of forests and woodland is taking over huge swats of land, until the birds and over animals form grazing habits?
Need some thoughts.
Let's share placental abruption stories! Here's mine. I had some light bleeding at 30w. I was told my waters had broken, given 2 steroid injections to mature baby's lungs, & hospitalised for a week for inpatient fetal monitoring. Throughout the week, my bleeding increased exponentially, till I was soaking multiple maternity pads with bright red blood daily. 1 week later, fetal decels were detected, so I underwent a cat 1 emergency c-section. It took 2 minutes from the time the decels were seen, to getting me on the OR table. The OB 'Wow, look at all that old blood, this placenta clearly abrupted.' Baby was born at 31w, & vomited abruption blood he'd swallowed in utero. He spent 5 weeks at the special care nursery before being discharged in good health at 36w. Docs don't know why the abruption occurred, as I have no risk factors. It was very traumatising, & I'd feared for mine & baby's life.
I’ve had host of complications with this pregnancy (I’ve posted before; you may recognize me!).
I’m 23 weeks now and have a chronic placental abruption. Only a small portion of the placenta has detached. I also have a large SCH over my cervix. One major hemorrhage around 15 weeks with no external bleeding since then.
I’m trying to get a handle on the abruption… did you start with a small abruption that progressed? Did you end up with a full abruption? If this was a prior pregnancy, what was the outcome?
I have a great team of MFM specialists supporting me. Their guidance is that these situations progress differently for everyone. I’m trying to get a handle of what I can/could expect as I progress forward day by day in this pregnancy.
Tia!
Please excuse my englisch. I hope I am right here. My sister in law had an emergency c-section due to a placental abruption. She says she is in a lot of pain. She asked me how I dealt with the pain, but I only had a scheduled c-section because of placenta previa. I felt like I couldn’t help a lot. So, I am asking here. Are there any mothers out there who had to go through the same thing and might be able to be able to share some tips or things that might help? Anything would be helpful.
55 million years ago, Wyoming.
A small mammal scurries along the tree branches. It is dusk, and it has just left its shelter in the deeper canopy to forage for food. It is an omnivore: it can do a little bit of everything, which is likely how it got to remain alive for so long. But these days, being a jack-of-all-trades isn’t good enough.
This thing looks a bit like the menagerie of ptilodontoideans it shares its habitat with. In fact, you’d be forgiven if you didn’t notice the subtle little hints, like how it chews up and down instead of sliding its jaws from front to back, or its little nails, or its single claw its uses to groom itself. Even as it opens its mouth for a well deserved yawn, you can see large lower premolar teeth: plagiaulacoids, like those of most of the world’s mammals these days.
Yet, it isn’t one of them. The last common ancestors between it and most mammals in its environment lived way back in the Jurassic, when dinosaurs roamed the earth. Though that eagle-like owl nearby is an uncomfortable reminder. Best to watch, dart if it moves.
Where were we? Oh yes.
This animal, Ultimomaia tristis, is the world’s last placental mammal. A carpolestid, to be exact. They were an odd evolutionary experiment; amidst the plethora of eutherians, one lineage lost the epipubic bones omnipresent in Mammalia, and combined with some weird virus genes this allowed for the formation of a complex placenta. Going through long term pregnancies, theirs were the most developed of mammal young, although this little tree climber was born seldomly more complex than the average multituberculate or metatherian joey.
Carpolestids, in particular, weere a branch of a group known as primates, that took to the trees when the forests returned in the aftermath of the KT event. They closely mimicked their contemporary multituberculates in developing plagiaulacoid teeth, well suited to crack open seeds.
In another timeline, these would prosper in the nascent tropical forests of the Eocene, thriving in ways that would alter life on Earth in the most fundamental of ways. Their neighbours would pay the price, blow
... keep reading on reddit ➡So I had my 32 week scan today, and they saw for the first time a secondary placental lobe.
Has anyone else had this? Did you have any complications because of it?
You think you know it all, but this #4 is keeping me on my toes!
Hi everyone! I went in for my first trimester (13w) anatomy scan this morning. It was overwhelmingly positive, and out little girl looked totally normal! The one negative thing was that the doctor did a doppler on my left placental artery (maybe it was umbilical?) and saw that the doppler signal had a "notch" in it (his words). It was just on one of two. He said that it's not a big deal but could lead to pre-eclampsia and recommended I take 2 baby aspirin a day. Issues downstream could include an under-developed baby and dangerously high blood pressure, though I'm not sure if he meant for me or baby. He said something about how when the placenta implants, sometimes the blood vessels don't implant all the way, or correctly. He specifically told me not to stress out about it or feel the need to google it when I got home. RIGHT ;)
Has anyone else experienced this? My main question is if the aspirin actually fixes the problem or keeps it from getting worse. If you had this at an early anatomy scan, was it still there at 20w? I'd hate to think my baby isn't getting all the nutrients it needs. Obviously I'm following the doctor's advice and taking two baby aspirin, but I generally freak out about everything, and this is no exception. Tell me it's gonna be okay!
So basically I’m wanting to start my project by a pandemic that only effects placental mammals, could something like that be possible?
The main goal is to get humans and most placental mammals extinct so parrots and corvids will take their place.
Hello,
I am 27 weeks and 4 days preggo with my first baby (it's a girl!). I wanted to share my story:
disclaimer: maybe a little graphic
On October 6th I was eating dinner with my bf after work (I am a Ortho Surgical Tech) and as I was eating I felt a 'gush'. I sneeze and cough a lot from sinus issues and just have had pelvic floor issues due to it so I've always felt like sometimes I just pee a little and that's kinda what this felt like but it felt like a lot of pee for not even having had coughed or sneezed in that moment. So I got up, sat on the toilet and peed like normal. As I was sitting there I looked down at my panties to see how wet they were and I noticed that it looked a little thick for pee (I was wearing black underwear, so I couldn't see color and it obviously wasn't discharge). I immdiately wiped myself and looked at what I wiped and it was all blood. I freaked out and stood up to look at what I 'peed' and it was completely red inside the toilet bowl.
At first I was in shock. I had NO pain (other than a dull backache I had pretty much since the start of my pregnancy). No cramps outside of round ligament pain but I wasn't experiencing that at the time of the bleeding...just occasionally during the course of my pregnancy. I had a lumbar puncture at 19 weeks to treat optic nerve swelling I have as a diagnosis I had prior to pregnancy but worsened after I got pregnant (IIH). That was all I could think of that might have caused this in that moment and none of it seemed likely to actually be why... Standing there in shock and trying to quickly diagnose...I remembered I was still bleeding and screamed for my bf. He came in and I just stated crying thinking I lost the baby and my body failed her and I thought I was doing everything right but this was happening. He took me go the hospital (thankfully I live less than 2 minutes from the hospital so we got there in no time).
I ran inside the ER in hysterics telling the receptionist how I was 22 weeks that very day and I am actively bleeding and I need to see labor and delivery right now, crying and just generally probably not making a whole lotta sense. They put me in a wheelchair and rolled me up. As I got to L&D, I had to do a urine test, which was literally just all blood. It was horrifying and I just kept losing it as I kept seeing the blood and the amount of it. They put me in the room and found the baby's heartbeat. It was good. They also did an ultrasound right away. Baby was mo
... keep reading on reddit ➡Tomorrow is my 20 week mark after a loss shortly before this pregnancy. This morning I was woken up by spotting after having trouble sleeping last night because of feeling achy and sore. After talking to the advice nurse they had me go to the ER. After 5 hours of being there for monitoring, lots of crying and worrying, multiple exams they think I’ve had a placental abruption but minor. While I was there I had contractions and cramp pains that came and went. There was a worry that my water broke but they couldn’t detect it under a microscope so that was a huge relief because I’m too early for it to be viable. The bleeding was pretty constant but not heavy and now at the end of the day has mostly subsided. Baby has a good heartbeat and moves a good amount which is hugely reassuring.
I’m scared to move around much now. They said I should still move and what happened isn’t from anything that I did. That there’s nothing that can be done right now though so I feel helpless and lost. Seems like everything is up in the air and I just have to hope it doesn’t come further away from my uterus.
Has anyone had this or something similar happen to them before or know of a positive outcome? I’m so scared I’m going to lose him, this morning was so frightening. Should I do anything to mitigate the chance of further abruption? Any thoughts or info is really appreciated.
I just had my second baby by emergency cesarean due to premature labour and placental abruption at 36 weeks. Although it ended up being a very positive experience overall, it was very scary in the moment and I'm incredibly grateful to have been in the hospital when it all happened.
My husband and I both want to have another baby, but the thought of another pregnancy/birth is quite daunting to me. The unknown sort of freaks me out and the thought that it could happen again and we not make it to the hospital in time. I think I will definitely be more comfortable having a planned cesarean. I guess I'm just looking for stories/experiences people have had with subsequent pregnancies after a similar birth experience?
https://preview.redd.it/o3eaz4w9kts71.png?width=1074&format=png&auto=webp&s=5379d5cdac83b40f05e9ec7faf6939ab9db80a09
Thats all. Good luck out there
Hi guys! After 72 hours of induction due to low amniotic fluid I was taken into a emergency c section due to placental abruption. Me and baby boy are healthy. Finally graduated at 40+3 days, thank you everyone for all ur help throughout my pregnancy 💖💖 i feel like 💩 and like i got hit by a bus but my baby boy makes it all worth it 🥰🥰👶🏽
Placental abruption is a serious condition in which the placenta separates from the wall of the uterus before birth. It can separate partially or completely. It s a serious condition in which the placenta starts to come away from the inside of the womb wall before the baby has delivered.
Signs and symptoms of placental abruption include:
- Vaginal bleeding
- Abdominal pain
- Back pain
- Uterine tenderness or rigidity
- Uterine contractions
https://preview.redd.it/px2qlkiyae181.jpg?width=1158&format=pjpg&auto=webp&s=f82366f02afd3f2fd7efd27133f796efae9ec205
I'm so upset. I just got back from my prenatal appointment. I'm so excited I'm having another baby girl, but I'm so scared/ upset /worried. They found placental damage due to everyone smoking around me/ smoke on theyre clothes. Everyone around me smokes.. I'm so frustrated.. I tell them and they aromatically lite up in the car!!!! 🤔🙄I feel like their nicotine fix is more important than my little one!!!!! She's ok so far but I'm still so anxious..😭😤
My sister in law had an emergency c-section due to a placental abruption. She says she is in a lot of pain. She asked me how I dealt with the pain, but I only had a scheduled c-section because of placenta previa. I felt like I couldn’t help a lot. So, I am asking here. Are there any mothers out there who had to go through the same thing and might be able to be able to share some tips or things that might help? Anything would be helpful.
55 million years ago, Wyoming.
A small mammal scurries along the tree branches. It is dusk, and it has just left its shelter in the deeper canopy to forage for food. It is an omnivore: it can do a little bit of everything, which is likely how it got to remain alive for so long. But these days, being a jack-of-all-trades isn’t good enough.
This thing looks a bit like the menagerie of ptilodontoideans it shares its habitat with. In fact, you’d be forgiven if you didn’t notice the subtle little hints, like how it chews up and down instead of sliding its jaws from front to back, or its little nails, or its single claw its uses to groom itself. Even as it opens its mouth for a well deserved yawn, you can see large lower premolar teeth: plagiaulacoids, like those of most of the world’s mammals these days.
Yet, it isn’t one of them. The last common ancestors between it and most mammals in its environment lived way back in the Jurassic, when dinosaurs roamed the earth. Though that eagle-like owl nearby is an uncomfortable reminder. Best to watch, dart if it moves.
Where were we? Oh yes.
This animal, Ultimomaia tristis, is the world’s last placental mammal. A carpolestid, to be exact. They were an odd evolutionary experiment; amidst the plethora of eutherians, one lineage lost the epipubic bones omnipresent in Mammalia, and combined with some weird virus genes this allowed for the formation of a complex placenta. Going through long term pregnancies, theirs were the most developed of mammal young, although this little tree climber was born seldomly more complex than the average multituberculate or metatherian joey.
Carpolestids, in particular, weere a branch of a group known as primates, that took to the trees when the forests returned in the aftermath of the KT event. They closely mimicked their contemporary multituberculates in developing plagiaulacoid teeth, well suited to crack open seeds.
In another timeline, these would prosper in the nascent tropical forests of the Eocene, thriving in ways that would alter life on Earth in the most fundamental of ways. Their neighbours would pay the price, blow
... keep reading on reddit ➡