What locked twins?

Locked twins is a rare complication of multiple pregnancy

multiple pregnancy

The term "gravida" can be used to refer to a pregnant woman. A "nulligravida" is a woman who has never been pregnant. A "primigravida" is a woman who is pregnant for the first time or has been pregnant once. A "multigravida" or "secundigravida" is a woman who has been pregnant more than once.

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Gravidity and parity - Wikipedia

where two fetuses become interlocked during presentation before birth. It occurs in roughly 1 in 1,000 twin deliveries and 1 in 90,000 deliveries overall.

How do you avoid locking twins?

Locked twins can be avoided by cesarean delivery in all cases in which first baby is not vertex. However, if the first baby is already partially delivered as breech, disimpaction can be tried by pushing both heads upward out of the pelvis under anesthesia.

What is discordant growth?

Twin growth discordance is a term used in obstetric imaging to describe a significant size or weight difference between the two fetuses of a twin pregnancy. To be classified as a growth discordance, some consider that the estimated fetal weight (EFW) of the smaller twin should fall under the 10^th centile.

Do twins ever reach full term?

According to the Cleveland Clinic, full term with twins happens between weeks 37 and 38, and it is absolutely possible to go full term with twins.

Can a baby eat its twin in the womb?

Parasitic twins differ from vanishing twins. With vanishing twins, early ultrasound or fetal heartbeat confirms the presence of two fetuses. But in later tests, only one fetus remains. The vanishing twin is absorbed by the remaining twin, the placenta, or the mother's body.

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Are twins always C section?

You may have heard that being pregnant with twins means an automatic C-section, but that isn't always the case. When it comes to twins these days, about half come into the world vaginally.

What is a trap pregnancy?

Twin reversed arterial perfusion (TRAP sequence) is a rare condition of monochorionic twin pregnancies. It arises when the cardiac system of one twin does the work of supplying blood for both twins. The twin supplying the blood is known as the "pump twin" and develops normally in the womb.

What is vanishing twin?

Vanishing twin syndrome (VTS) is a miscarriage that causes a pregnancy involving twins to become a pregnancy involving one baby. It occurs when one of the embryos detected during an ultrasound stops developing.

What causes twin discordance?

The causes of twin growth discordance are often unknown. The most important is considered to be monochorionicity, mainly because of unequal sharing, or of velamentous cord insertions in the IUGR twin [20]. Other possible causes are “intrauterine crowding” and the presence of malformations [21-23].

How do you deliver a locked twin?

Most often, locked twins are delivered via Caesarean section, given that the condition has been diagnosed early enough. The fetal mortality rate is high for the twin that presents first, with over 50% being stillborn.

What is a twin to twin transfusion?

Twin-to-twin transfusion syndrome (TTTS) is a rare pregnancy condition affecting identical twins or other multiples. TTTS occurs in pregnancies where twins share one placenta (afterbirth) and a network of blood vessels that supply oxygen and nutrients essential for development in the womb.

Can Siamese twins be separated?

As a rule, shared heart conjoined twins cannot be separated. Doctors at Children's Hospital of Philadelphia have separated 28 sets of conjoined twins and have managed the care of many others whose separation was not surgically possible.

What are homogeneous twins?

To form identical or monozygotic twins, one fertilised egg (ovum) splits and develops into two babies with exactly the same genetic information. To form fraternal or dizygotic twins, two eggs (ova) are fertilised by two sperm and produce two genetically unique children.

What is normal twin discordance?

About 75% of twins exhibit < 15% discordance (concordant), 20% are 15-25% (mildly) discordant, and about 5% are more than 25% (severely) discordant. Higher frequencies and increased severity are seen among triplets.

What causes fetus Papyraceus?

Fetus papyraceous usually results from missed abortion occurring at the end of the first trimester or early in the second trimester while the other fetus goes on to full development. The amniotic fluid is absorbed and the retained dead fetus is compressed between the sac of the surviving co-twin and the uterine wall.

What is a sunrise baby?

sunrise baby: the surviving twin of a baby who dies in the womb.

What is a double rainbow baby?

A double rainbow baby is the term for a healthy baby born to parents who have experienced two previous losses. Getting Pregnant After a Pregnancy Loss.

What happens if a twin dies in the womb?

When a twin dies after the embryonic period of gestation, the water within the twin's tissues, the amniotic fluid, and the placental tissue may be reabsorbed. This results in the flattening of the deceased twin from the pressure of the surviving twin.

What is an Acardiac baby?

Twin reversed arterial perfusion sequence overview

This is called the “TRAP fetus,” or sometimes referred to as the “acardiac fetus” because it either has a very underdeveloped heart or no heart at all. It could not grow or survive without the blood supply from the normal twin and it will not survive after birth.

Are Acardiac twins alive?

The normal fetus is referred to as the “pump twin” because its heart is used to pump blood to the abnormal mass. The “acardiac twin” has no chance of survival.

What is Parabiotic twin?

One twin, called the parabiotic twin, lacks a functioning cardiac system and receives blood from the normally developing twin, often referred to as the “pump twin.” Because one heart is pumping blood for both twins, the condition places an enormous demand on the heart, putting the pump twin at risk for cardiac failure.

Can I deliver twins naturally?

Can you have a natural birth with twins? Lots of women think they have to have a caesarean section with twins. In fact, more than 40% of twin births are vaginal. If you're planning a vaginal delivery, it's usually recommended that you have an epidural for pain relief, but you can discuss this with your midwife.

Can I have twins naturally?

The American Society for Reproductive Medicine reports that twins happen naturally in about 1 out of every 250 pregnancies. The rate is much higher in women who get fertility treatments.

What is the longest gap between twins?

The longest interval between the birth of twins is 90 days, in the case of Molly and Benjamin West, dizygotic (fraternal) twins born in Baltimore, Maryland, USA to parents Lesa and David West (all USA) on 1 January and 30 March 1996.

What are Irish twins?

The term “Irish twins” refers to one mother having two children who were born 12 months or less apart. It originated in the 1800s as a way to poke fun at Irish Catholic immigrant families who didn't have access to birth control.