In the retrospective study, patients without known coronary artery disease who had shortness of breath were four times more likely to suffer death from a cardiac cause than asymptomatic patients and twice as likely as patients who had chest pain that is considered to be typical cardiac pain.
A steroid is an organic compound with four rings arranged in a specific configuration.Examples include the dietary lipid cholesterol, the sex hormones estradiol and testosterone and the anti-inflammatory drug dexamethasone. steroid is an organic compound with four rings arranged in a specific configuration.
Steroids are a class of lipids containing four fused (directly attached) carbon rings. Although steroids can bond to fatty acids, steroid molecules do not contain a fatty acid chain, and the monomer of a steroid biomolecule is difficult to define.holesterol and other steroids containing a hydroxyl group are called sterols. Cholesterol and related sterols are present in animal cell membranes and are precursors for the synthesis of many vital steroids and other sterol derivatives. Many steroids and their derivatives perform vital cellular functions.