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  2. Preterm birth - Wikipedia

    en.wikipedia.org/wiki/Preterm_birth

    Preterm birth, also known as premature birth, is the birth of a baby at fewer than 37 weeks gestational age, as opposed to full-term delivery at approximately 40 weeks. [1] Extreme preterm [ 2 ] is less than 28 weeks, very early preterm birth is between 28 and 32 weeks, early preterm birth occurs between 32 and 34 weeks, late preterm birth is ...

  3. Fetal viability - Wikipedia

    en.wikipedia.org/wiki/Fetal_viability

    As of 2022, the world record for the lowest gestational age newborn to survive is held by Curtis Zy-Keith Means, who was born on 5 July 2020 in the United States, at 21 weeks and 1 day gestational age, weighing 420 grams. [5] A preterm birth, also known as premature birth, is defined as babies born alive before 37 weeks of pregnancy are ...

  4. Timeline of human prenatal development - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_human_prenatal...

    Gestational age: 35 and 0 days until 39 weeks and 6 days old. Embryonic age: Weeks nr 34–38. 33–37 weeks old. The fetus is considered full-term at the end of the 39th week of gestational age. It may be 48 to 53 cm (19 to 21 in) in length. The lanugo is gone except on the upper arms and shoulders. Fingernails extend beyond fingertips.

  5. Infant respiratory distress syndrome - Wikipedia

    en.wikipedia.org/wiki/Infant_respiratory...

    The incidence decreases with advancing gestational age, from about 50% in babies born at 26–28 weeks to about 25% at 30–31 weeks. The syndrome is more frequent in males, Caucasians, infants of diabetic mothers and the second-born of premature twins. [7]

  6. Micro-Preemie Mom Didn't Know If She'd 'Be Writing an ... - AOL

    www.aol.com/micro-preemie-mom-didnt-know...

    Katelyn's pregnancy had been smooth until complications led her to give birth at 25 weeks. ... cervix" was the cause of Nora's premature birth. ... proud mom says of her now-18-month-old.

  7. Retinopathy of prematurity - Wikipedia

    en.wikipedia.org/wiki/Retinopathy_of_prematurity

    Almost all infants with ROP have a gestational age of 31 weeks or less (regardless of birth weight) or a birth weight of 1250 g (2.76 lbs) or less; these indications are generally used to decide whether a baby should be screened for ROP, but some centres, especially in developing countries, extend birth weight screening criteria to 1500 g (3.3 ...

  8. Late preterm infant - Wikipedia

    en.wikipedia.org/wiki/Late_preterm_infant

    Late preterm infants are infants born at a gestational age between 34 + 0 ⁄ 7 weeks and 36 + 6 ⁄ 7 weeks. [1] They have higher morbidity and mortality rates than term infants (gestational age ≥37 weeks) due to their relative physiologic and metabolic immaturity, even though they are often the size and weight of some term infants.

  9. Ballard Maturational Assessment - Wikipedia

    en.wikipedia.org/wiki/Ballard_Maturational...

    Whereas the neurological criteria depend mainly upon muscle tone, the physical ones rely on anatomical changes. The neonate (less than 37 weeks of age) is in a state of physiological hypotonia. This tone increases throughout the fetal growth period, meaning a more premature baby would have a lesser muscle tone. It was developed in 1979. [1]