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prematurity    
n. 早熟,过早,早开花

早熟,过早,早开花

prematurity
n 1: the state of being premature [synonym: {prematureness},
{prematurity}]

Prematurity \Pre`ma*tu"ri*ty\, n. [Cf. F. pr['e]maturit['e].]
The quality or state of being premature; early, or untimely,
ripeness; as, the prematurity of genius.
[1913 Webster]


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  • Premature birth - Symptoms and causes - Mayo Clinic
    A premature birth means a baby is born too early The birth takes place before the 37th week of pregnancy A typical pregnancy lasts about 40 weeks Premature babies often have serious health problems, especially when they're born very early These problems often vary But the earlier a baby is born, the higher the risk of health challenges
  • Preterm Birth: Premature, Causes, Symptoms Complications
    Premature or early birth can pose serious health risks to a newborn baby That’s because many organs like the brain, lungs and liver, are still growing and developing in the final weeks of pregnancy A premature baby may have trouble staying warm or feeding and may be at risk for developmental delays later in life
  • Preterm Birth | Maternal Infant Health | CDC
    Preterm birth is when a baby is born too early, before 37 weeks of pregnancy have been completed In 2022, preterm birth affected about 1 of every 10 infants born in the United States The preterm birth rate declined 1% from 2021 to 2022, to 10 4%, following an increase of 4% from 2020 to 2021
  • Preterm birth - World Health Organization (WHO)
    Preterm is defined as babies born alive before 37 weeks of pregnancy are completed There are sub-categories of preterm birth, based on gestational age: moderate to late preterm (32 to 37 weeks)
  • Prematurity - Stanford Medicine Childrens Health
    A baby born before 37 weeks of pregnancy is considered premature or born too early Learn more about prematurity, including causes, risks, symptoms, diagnosis, and treatment
  • Preterm birth - Wikipedia
    Preterm infants usually show physical signs of prematurity in reverse proportion to the gestational age As a result, they are at risk for numerous medical problems affecting different organ systems
  • Preterm birth: Definitions of prematurity, epidemiology, and risk . . .
    Prematurity is defined as a birth that occurs before 37 completed weeks (less than 259 days) of gestation It is associated considerable risk of morbidity and mortality, particularly among extremely preterm infants (ie, gestational age [GA] <28 weeks)
  • Prematurity - Preemie Parent Support for Short and Long Term Impacts of . . .
    Founded in 1996, the Prematurity website provide support, information and resources for parents of children born prematurely - from birth to adulthood This website has a unique focus on the long term impacts of prematurity
  • Premature Birth | Fact Sheets | Yale Medicine
    Premature birth, also known as preterm birth, is when a baby is born earlier than usual, before 37 weeks of pregnancy Because premature babies are born early, they have not had as much time as usual in the womb to develop and grow
  • Preterm Infants - Pediatrics - MSD Manual Professional Edition
    A diagnosis of prematurity depends on the best estimate of gestational age Neonatal gestational age is usually defined by counting the number of weeks between the first day of the mother's last normal menstrual period and the date of delivery





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