Health A-Z

ACE inhibitors

Clinical Definition ACE Inhibitors are a class of drugs that block the conversion of angiotensin I to angiotensin II, used in the treatment of hypertension and congestive heart failure, and in the prevention of microvascular complications of diabetes mellitus. In Our Own Words ACE inhibitors are medications that work by lowering the blood pressure and


Clinical Definition Acetaminophen is a crystalline compound classified as a non-opioid analgesic. It is also used as an antipyretic with a similar potency to aspirin. The exact mechanism of action of acetaminophen is not clear, but it does appear to inhibit the synthesis of prostaglandins. In large doses, acetaminophen can lead to acute hepatic toxicity.

Acetylsalicylic acid

Clinical Definition Acetylsalicylic acid, also known as aspirin, is classified as a non-steroidal anti-inflammatory pharmaceutical agent. It contains salicylic acid, the active metabolite that inhibits prostaglandins. Acetylsalicylic acid is used as an antipyretic and analgesic. It is also sometimes prescribed as antiplatelet agent in order to reduce the risk of a myocardial infarction and cerebrovascular

ACL Reconstruction

Clinical Definition One type of knee surgery involves reconstruction of the anterior cruciate ligament, or the ACL. The ACL is a band of connective tissue that provides stability to the knee. ACL injuries are very common, especially in sports that demand quick stops and starts or rapid changes in velocity, and are often treated surgically.

Acute Altitude Sickness

Clinical Definition Acute altitude sickness, also called mountain sickness, is a group of general symptoms triggered by traveling to a higher elevation, usually above 8,000 feet, too rapidly. The potentially life-threatening illness is due to reduced air pressure and lower oxygen levels. In Our Own Words Altitude sickness, also known as mountain sickness, occurs when

Acute coronary syndrome

Clinical Definition Acute coronary syndrome is an umbrella term for a group of coronary artery diseases associated with sudden blockage of the blood supply to the heart muscle. Acute coronary syndrome is a medical emergency. In Our Own Words Acute coronary syndrome is a medical emergency describing a group of conditions, including a possible heart

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