Comprehensive Chromosome Screening (CCS) is a technique that allows selection of the healthiest from a group of embryos. After in vitro fertilization, a few cells from each embryo are sent to the genetics lab and chromosomes are counted.
Shortness of breath has many causes affecting either the breathing passages and lungs or the heart or blood vessels. An average 150-pound (70 kilogram) adult will breath at an average rate of 14 breaths per minute at rest.Excessively rapid breathing is referred to as hyperventilation.hortness of breath has many causes affecting either the breathing passages and lungs or the heart or blood vessels. An average 150-pound (70 kilogram) adult will breath at an average rate of 14 breaths per minute at rest.
1 For rapid heart rates that are caused by shortness of breath, you may have trouble lying flat in bed, and you may have to sleep on 2 or more pillows. 2  Your shortness of breath may cause you to wake up in the middle of the night.3  If you have heart problems, your legs may be swollen, especially in your feet and ankles. For rapid heart rates that are caused by shortness of breath, you may have trouble lying flat in bed, and you may have to sleep on 2 or more pillows. 2  Your shortness of breath may cause you to wake up in the middle of the night.