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.
A wide variety of heart problems can cause increased heart rate and shortness of breath. These problems include electrical conduction disorders, atrial/ventricular fibrillation, high blood pressure and arrhythmias.ung Problems. As with the heart, fluid accumulation around the lungs can also cause shortness of breath and tachycardia. This fluid accumulation, known as pleural effusion, may be caused by an infection or irritation of lung tissue.