Who are the best candidates for a rhinoplasty?Can I have an MRI if I am pregnant or breastfeeding?What are this risks involved in having a gastric bypass?How often does an epidural procedure cause a spinal headache?As the population in the United States ages, the need for accurate and easy to understand information on medical care will increase. This is especially true with regard to medical procedures and tests, given that these occasions can be an anxiety-producing experience. The Gale Encyclopedia of Surgery and Medical Tests, 3rd Edition, provides patients and caregivers a start-to-finish overview of a surgery or test, as well as information on related diseases and conditions, medications, and other issues that pertain to hospitalization, insurance plans, and the impact of the affordable Care act on all of the above.