The mean corpuscular hemoglobin concentration, a measure of the concentration of hemoglobin in a given volume of packed red blood cells. It is reported as part of a standard complete blood count.he mean corpuscular hemoglobin concentration, a measure of the concentration of hemoglobin in a given volume of packed red blood cells. It is reported as part of a standard complete blood count.
An enema is the administration of a substance in liquid form into the rectum. This may be performed to aid bowel evacuation or to administer medicines.
Enemas for bowel evacuation. There are two different types of enema for bowel evacuation, although they are very similar. Some enemas are given to produce an immediate effect, which is to lubricate, thus facilitating the passage of faeces. The administration of a fluid into the rectum may also induce peristaltic contraction of the rectal walls.