limit of viability

(redirected from Limits of Viability)

limit of viability

Pediatrics The minimum weight or age of a fetus that is compatible with extrauterine life; the LoV has been lowered by improved obstetric and neonatal interventions and aggressive resuscitation
Limits of Viability
Weeks of Gestation  22  23  24 25
Average birthweight (g) 490 592 695 761
Number stillbirths 7/29 4/40 0/34 0/39
Number 6-month survival/total  0/29  6/40 19/34 31/39
Days of hospital stay NA 120±23 107±37 76±23
Survival w/o cerebral defects 0% 12% 21% 69%
References in periodicals archive ?
I want to make this very clear: We have no intention and we've never had any intention with this technology of extending the limits of viability further back," he said, calling such a project "a pipe dream.
Neonatal care practices have improved overall survival of premature infants and have pushed the limits of viability to 22 to 23 weeks of gestation.
Recent advances in obstetric and pediatric care, however, have resulted in the survival of some infants born at 22 weeks' gestation, calling into question long-held beliefs about the limits of viability.
It was chosen because it was earlier than the earliest limits of viability at the time, but not so early that the unborn child could never be viable.
The argument over the limits of viability and the appropriate threshold for abortion are fraught.
Smalling, "I think she does open the debate again that we're constantly reassessing those limits of viability.
Consultant neonatologist Alan Fenton said: "The very small number of babies born at the limits of viability need to be assessed on a case by case basis by senior experienced staff.