Category: M

Clusters of lymphoid cells beneath the mucosal endothelium of the gastrointestinal, respiratory, and genitourinary tracts that help protect the body from inhaled, consumed, or sexually transmitted infections. The system has two parts: organized and diffuse. The organized part (the mucosal-associated lymphoid tissue of the gastrointestinal and respiratory tracts) is composed of nodules containing lymphocytes and…

Using radioactive isotopes, such as 201 TI or 99 mTc sestamibi, to gauge the blood supply and viability of the regions or walls of the heart. MPI frequently is used to assess patients with coronary artery disease, often in conjunction with exercise tolerance tests. A patient with a coronary artery that is almost totally blocked,…

Ileus due to impacted meconium in the intestines. It is usually associated with newborn children with cystic fibrosis. It is only rarely seen in newborns with other diseases that affect pancreatic exocrine secretion.  

Ileus produced by a physical obstruction (e.g., hernia, adhesion, or tumor).  

Agitated behavior, sometimes accompanied by pseudoseizures.  

Total amount of hyperopia that can be neutralized by a convex lens without interfering with clarity of vision.  

Hospitals with leadership style and policies that increase the recruitment and retention of registered professional nurses.  

A hernia between the layers of the mesocolon.  

Hemorrhoid that incorporates both internal and external components.  

Urinary bleeding that occurs following strenuous exercise (e.g., running a marathon).