English textbooks

Does this test have other names? Paracetamol or Tylenol drug level   What is this test? The acetaminophen drug level is a blood test used to screen for the presence of the common pain reliever acetaminophen. This over-the-counter (OTC) medicine is…

Does this test have other names? Acetylcholine Receptor (AChR) Binding Antibody, AChR Antibody, Myasthenia Gravis Antibodies What is this test? This test measures the concentration of a substance called acetylcholine receptor (AChR) antibody in your blood. Acetylcholine is a chemical…

What is achalasia? Achalasia is a swallowing disorder that affects the esophagus. The esophagus is a tube that connects the back of your throat to your stomach. Food and liquid go down the tube when you swallow. If you have…

What is achalasia in a child? Achalasia is a rare disease that makes it hard to swallow foods and liquids. In achalasia, there is a problem with the tube that carries food from the mouth to the stomach (esophagus). The…

What are Achilles tendon injuries? The Achilles tendon is a fibrous band of tissue that links the muscles in your calf to your heel. The strength and flexibility of this tendon are important for jumping, running, and walking. Your Achilles tendon…

What is Achilles tendon repair surgery? Achilles tendon repair surgery is a type of surgery to fix a damaged Achilles tendon. The Achilles tendon is a strong, fibrous cord in the lower leg. It connects the muscles of your calf…

What is achondroplasia in a child? Achondroplasia is the most common type of rare genetic bone disorder. The strong, flexible tissue called cartilage is not made into bone as normal. This causes a series of signs, such as short arms…

Does this test have other names? Acid-fast bacillus smear and culture, AFB smear and culture, TB culture and sensitivity, mycobacterial culture What is this test? An acid-fast bacteria (AFB) culture is done to find out if you have tuberculosis (TB)…

What is acne? Acne is a disorder of the hair follicles and oil glands (sebaceous glands). The oil glands secrete oils (sebum) to keep the skin moist. When the glands get clogged, it can lead to pimples and cysts. Acne…

What is acne in a child? Acne is a disorder of the hair follicles and sebaceous glands. Hair follicles are the areas around the base or root of each hair. Sebaceous glands are the tiny glands that release oil (sebum) into…

What is acoustic neuroma? Acoustic neuroma is a rare tumor. It’s not cancer. It grows slowly from an overproduction of Schwann cells and is also called a vestibular schwannoma. The tumor then presses on the hearing and balance nerves in…

What is acquired hemophagocytic lymphohistiocytosis (HLH)? Hemophagocytic lymphohistiocytosis (HLH) is a rare immune system disease. It occurs more often in babies and young children. But it can also occur in adults. Children may inherit the disease through genes. This is…