What are quality improvement projects in hospitals?
= "the standard of something as measured against other things of a similar kind; the degree of excellence of something" (Google)
= "being improved or made better"
= "a concentrated effort and series of actions designed to attain a specific goal"
A quality improvement project is an effort by one or more people to improve the degree of excellence of a system or outcome.
Examples would include things like reducing the rates of various kinds of infections, decreasing wait times, decreasing length-of-stay, etc.