Approximations of gestational age are typically based on ultrasound imaging and/or the patient's estimate of her last menstrual period, but neither method is necessarily ideal.
Scientists from the United States and Denmark have developed a blood test that accurately predicts 75% to 80% of preterm delivery.
He said that the findings affirmed the existence of a "transcriptomic clock of pregnancy" that could serve as a new way to assess the gestational age of a fetus. The blood test predicted reliable signals of the premature birth and gestational age with almost 80% accuracy.
To figure out how to predict pre-term birth, the researchers used blood samples from 38 women who were at risk for premature delivery. "[It] will be important to investigate the performance of the blood test in a broader, unselected population", they write in their study.
Two thirds of preterm births are spontaneous, but identifying at-risk pregnancies has proven problematic, and "efforts to identify genetic causes and risk factors have had limited success.", the researchers suggest.
Yann Moix quitte ONPC : l’écrivain sait qui va le remplacer
C'est en ces termes que Yann Moix a répondu à Jean-Jacques Bourdin qui le questionnait sur le sujet ce matin sur RMC et BFMTV . Et alors que le nom de son successeur n'a pas encore été annoncé officiellement, les rumeurs vont bon train.
In the study, published Thursday in the journal Science, the team, which was co-led by Dr. Mads Melbye, who runs the Statens Serum Institute in Denmark, analyzed the blood of 31 Danish women taken every week throughout their pregnancies, which were all full-term.
Stevenson, M.D., principal investigator at the March of Dimes Prematurity Research Center at Stanford University, describes the PCR-based tests, which can be carried out on a single blood sample, as effectively "eavesdropping on a conversation" among the mother, the fetus, and the placenta. The estimates of gestational age given by the model were accurate about 45 percent of the time, which is comparable to 48 percent accuracy for first-trimester ultrasound estimates.
Premature birth (when the baby is born at least three weeks earlier) is the main cause of infant mortality and a major cause of illness and death by the age of five years worldwide. "While ultrasound gives us a good idea of how far along a given pregnancy is. what it doesn't tell us is when a given woman will deliver".
At the same time, another part of the study looked at a separate group of pregnant women.
There is now no reliable way to predict when a pregnancy will result in premature birth, one of the world's primary causes of fetal sickness and death, Dr. Kecia Gaither, director of Perinatal Services at NYC Health+Hospitals in Bronx, New York, said in an email.
The new test tracks what's happening in pregnancy via genetic clues in the mother's blood. A study by the University of Pennsylvania linked such births to changes in the mother's bacteria.
It is nearly as if the molecular message being sent by RNA "is a little bus that travels back and forth and is letting Mom know what's going on", Cheng said.
Kimi Räikkönen (Ferrari) ne peut que compléter le Top 5 après avoir commis une faute de pilotage dans sa 2e tentative. Pointé à 1.435 de Verstappen, le pilote McLaren a devancé son équipier Fernando Alonso, hauteur du 13e chrono.
There is a US medical team in Guangzhou assessing whether more people need to leave China, the Associated Press reported. Those affected by the incidents have reported a range of symptoms, including nausea, vomiting and difficulty balancing.
The musician, who joined the band aged just 18 in 1968, was described as a "huge force" on the iconic rock band's early years. After Welch's departure in 1974, Lindsey Buckingham and Stevie Nicks joined, creating the best-known lineup of the group.
Jonathan Sacks, a former chief rabbi, said she was "one of the most remarkable Holocaust survivors I had the privilege to know". A sister of hers was shot while trying to smuggle food into a labor camp.
Sur décision de la chancelière Angela Merkel, le pays s'était ouvert à plus d'un million de migrants en 2015 et 2016. Il sera ensuite présenté à un juge d'application des peines avant une probable mise en détention préventive.
His two marriages fell apart and Bourdain blamed his hectic travel schedule in part for his inability to maintain a relationship. Oliver wrote on Instagram: "I have to say I'm in total shock to hear that the wonderful @anthonybourdain has just died".
En ce qui concerne la sécurité, le choix des pneus parfaitement adaptés est extrêmement. Mais tout d’abord, vous devez savoir où trouver les pièces compatibles avec votre voiture.
Fils de légende de la Formule 1 a dépassé son père
Nul doute qu’elle offrira à Mika la meilleure option pour poursuivre sa carrière dans le sport automobile. Et il n'est pas Andrei Arshavin, pour répondre à la question sur les attentes facilement et naturellement.
Brexiteer 'met Russian officials before referendum vote'
The allegations raise new concerns over whether the Kremlin sought to influence the outcome of the European Union referendum vote. Mr Banks had been due to give evidence to the Commons culture committee's inquiry into fake news on Tuesday.
Trump arrives late to G7, reschedules Macron meeting
On climate change, the G7 failed to find consensus after the United States withdrew from the Paris climate accord a year ago . The G7 summit , held in La Malbaie , Quebec province, also covered such issues as relations with Russian Federation .
As forecasted by J.P.Morgan: oil prices may head lower
The surge in U.S. production has pulled down WTI into a discount versus Brent of more than $11 a barrel, its steepest since 2015. On the supply side, global output is poised to rise by 2 million barrels a day in 2018, 200,000 barrels a day higher than J.P.
Les NTIC : avantages et inconvénients
En effet, avoir mille et une tâches à accomplir à la fois, ça peut avoir des effets négatifs. En effet, les travailleurs effectuent les tâches beaucoup plus rapidement tout en conservant leur qualité de vie.