postmature infant

infant /in·fant/ (in´fint) the human young from the time of birth to one year of age.

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dysmature infant  postmature i.

floppy infant  see under syndrome.

immature infant  one usually weighing less than 2500 grams at birth and not physiologically well developed.

low birth weight (LBW) infant  one weighing less than 2500 g at birth.

mature infant  one weighing 2500 g or more at birth, usually at or near full term, physiologically fully developed, and having optimal chance of survival.

moderately low birth weight (MLBW) infant  one weighing at least 1500 but less than 2500 g at birth.

newborn infant  the human young during the first four weeks after birth.

postmature infant 

1. one with postmaturity syndrome.

2. postterm i.

postterm infant  one born at or after the forty-second completed week (294 days) of gestation.

premature infant 

1. one usually born after the twentieth completed week and before full term, defined as weighing 500 to 2499 g at birth; the chance of survival depends on the weight. In countries where adults are smaller than in the United States, the upper limit may be lower.

2. preterm i.

preterm infant  one born before the thirty-seventh completed week (259 days) of gestation.

term infant  one born in the interval from the thirty-seventh completed week to the forty-second completed week of gestation; 259 days to 293 days, inclusive.

very low birth weight (VLBW) infant  one weighing less than 1500 g at birth.

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postmature infant,

an infant born after the end of the 42nd week (288 days) of gestation, bearing the physical signs of placental insufficiency. Characteristically the baby has dry, peeling skin; long fingernails and toenails; and folds of skin on the thighs and sometimes on the arms and buttocks. Hypoglycemia and hypokalemia are common. Postmature infants often look as if they have lost weight in utero. The newborn is fed early, and the calcium and potassium levels in the blood are monitored and corrected, if necessary, to prevent seizures and neurologic damage. To prevent the syndrome, labor may be induced as gestation approaches 42 weeks. To anticipate the problems associated with the syndrome, the fetus and the mother may be electronically monitored through labor. Also called postmature newborn, postterm infant.