The viability of a fetus refers to its ability to potentially survive outside of the womb with medical assistance. The gestational age at which a fetus becomes viable can vary, but it generally falls between 22 and 24 weeks of pregnancy.
At 22 weeks, a fetus is considered to be at the threshold of viability, meaning that it has a very small chance of surviving if delivered. However, the chances of survival increase significantly as the fetus continues to develop. By 24 weeks, a fetus has a much higher chance of survival with medical intervention, although its chances of survival are still relatively low compared to those of a full-term infant.
The viability of a fetus is influenced by several factors, including its gestational age, size, and overall health. Preterm infants, or those born before 37 weeks of pregnancy, are at an increased risk of health complications and are more likely to require medical intervention in order to survive.
Medical technology has come a long way in recent years, and it is now possible for infants born as early as 22 weeks to survive with the help of advanced medical care. However, these infants are still at a higher risk of long-term health problems and may require additional medical attention and support.
It is important to note that viability is not the same as fetal development or the point at which a fetus becomes a "person." These are complex and deeply philosophical questions that go beyond the scope of medical science and are not universally agreed upon.
In conclusion, the viability of a fetus refers to its ability to potentially survive outside of the womb with medical assistance. The gestational age at which a fetus becomes viable can vary, but it generally falls between 22 and 24 weeks of pregnancy. Medical technology has made it possible for infants born at this gestational age to survive with medical intervention, although they are still at an increased risk of health complications.