"Fetal breathing may be noticed as early as 15 weeks of gestation. At 24 -28 weeks, the fetus breaths about 10-20% of the time, increasing to 30% at 30 weeks of pregnancy 1. Fetal breathing is crucial to the development of the lungs 2. Fetal respiratory rate may vary from 30 -70 breaths per minute with periods of apnoea up to 2 hours in between 3,4."
"Fetal breathing may be noticed as early as 15 weeks of gestation. At 24 -28 weeks, the fetus breaths about 10-20% of the time, increasing to 30% at 30 weeks of pregnancy 1. Fetal breathing is crucial to the development of the lungs 2. Fetal respiratory rate may vary from 30 -70 breaths per minute with periods of apnoea up to 2 hours in between 3,4."
"Fetal breathing may be noticed as early as 15 weeks of gestation. At 24 -28 weeks, the fetus breaths about 10-20% of the time, increasing to 30% at 30 weeks of pregnancy 1. Fetal breathing is crucial to the development of the lungs 2. Fetal respiratory rate may vary from 30 -70 breaths per minute with periods of apnoea up to 2 hours in between 3,4."