English textbooks

What is aplastic anemia? Aplastic anemia occurs when your bone marrow doesn’t make enough red and white blood cells, and platelets. Having fewer red blood cells causes hemoglobin to drop. Hemoglobin is the part of blood that carries oxygen through…

What is anencephaly in children? Anencephaly is a condition that is present at birth (birth defect). It affects the brain and skull bones. With this condition, the brain isn’t fully formed. It often lacks part or all of the cerebrum.…

What is an aneurysm? An aneurysm is a bulging, weak area in the wall of a blood vessel. It may occur in any blood vessel but most often develops in an artery rather than a vein. An aneurysm can be categorized…

Parenting and grandparenting can be an emotional roller coaster. You’re filled with love for your kids and grandkids. Yet caring for them can also be scary, frustrating, and sometimes maddening. But no matter how upset you get, it’s important to…

What is angina pectoris? Angina pectoris is chest pain or discomfort that occurs when a part of your heart doesn’t get enough blood and oxygen. It is most often just called angina. Angina can be a symptom of coronary artery…

What is angiogenesis? Angiogenesis is the process of forming new blood vessels from existing blood vessels. This is controlled by certain chemicals the body makes. It can help in normal wound healing and supplies oxygen rich blood to organs and…

Angioplasty may be done as part of your stay in a hospital. Procedures may vary depending on your condition and your healthcare provider’s practices. Most people who have angioplasty and stent placement are kept track of overnight in the hospital.…

Animal bites, if severe, can be a life-threatening emergency that requires clinical care by a physician or other health care professional. Listed in the directory below is some additional information about animal bites, for which we have provided a brief…

Does this test have other names? Serum angiotensin converting enzyme, SACE What is this test? This test measures how much angiotensin converting enzyme (ACE) is in your blood. Your ACE levels may be higher if you have a condition called sarcoidosis.…

Does this test have other names? Serum anion gap What is this test? This test looks at electrically charged particles in your blood. This helps your healthcare provider diagnose acid-base problems. The test results are done using the results of…

What is aniridia? Aniridia is a serious and rare genetic eye disorder that affects the colored part of the eye (iris). Aniridia means lack of an iris. With this condition, the iris is partly or fully gone. The pupil is…

What is ankle dislocation? A joint dislocation is when there is an abnormal separation between the bones of a joint. When this happens in your ankle joint, it’s called an ankle dislocation. It’s a severe injury. There are 3 bones…