What is the target oxygen saturation level for a newborn after one minute of life?

The target oxygen saturation level for a newborn after one minute of life is typically expected to be in the range of 60% to 65%. This range is important because it reflects normal physiological adaptation to extrauterine life.

Immediately after birth, a newborn undergoes significant changes as they transition from the fetal environment, where they obtained oxygen via the placenta, to breathing air independently. Within the first minute, oxygen saturation levels can be low as the child's lungs fill with air, and there may also be residual pulmonary vasoconstriction. Therefore, an oxygen saturation of 60% to 65% is considered an acceptable baseline as the newborn begins to oxygenate effectively and optimize respiratory function.

This target allows healthcare providers to monitor the effectiveness of the baby's transition and to provide assistance if needed, without prematurely assuming the need for intervention. The ranges specified in the other choices are either too low or too high for such an early time point, as they do not appropriately reflect the physiological processes taking place immediately after birth.