These 10 animal facts will amaze you. Color blindness is most often a genetic visual deficiency that limits the colors that an individual can detect. Most people with this condition don't only see in black and white. The colors affected are usually limited to green and red, which often appear as shades of tan or brown.hese 10 animal facts will amaze you. Color blindness is most often a genetic visual deficiency that limits the colors that an individual can detect. Most people with this condition don't only see in black and white. The colors affected are usually limited to green and red, which often appear as shades of tan or brown.
The duration of the QT-interval varies dependent upon how fast the heart is beating, but in normal healthy people, when the heart is beating 60 beats per minute, it is between 350 and 440 milliseconds.
You'll notice how the normal parameters begin to narrow as the child grows older. At birth, the normal range of hematocrit can be anywhere from 42 to 64. After birth up until 1 month of age, the normal range is between 31 and 67. Between 1 to 2 months, the normal range is between 28 to 55.Between 2 and 6 months, the normal range is between 28 and 42.ou'll notice how the normal parameters begin to narrow as the child grows older. At birth, the normal range of hematocrit can be anywhere from 42 to 64. After birth up until 1 month of age, the normal range is between 31 and 67. Between 1 to 2 months, the normal range is between 28 to 55.