Microvascular angina (MVA) is defined as angina pectoris caused by abnormalities of small coronary arteries. In itsmost typical presentation, MVA is characterized by angina attacks mainly caused by effort, evidence of myocardial ischemia on non-invasive stress tests, but normal coronary arteries at angiography. CLOSE WINDOW ]. Figure 1. Definition and classification of microvascular angina (MVA). In patients with sufficiently typical chest pain and normal coronary arteries, MVA is diagnosed after careful exclusion of other (cardiac and non-cardiac) causes.
Human Population - Biology Encyclopedia Human Population Human population refers to the number of people living in a particular area, from a village to the world as a whole. A secondary meaning of population is the inhabitants themselves, but in most uses population means numbers.
population. 1  a. All of the people inhabiting a specified area. b. The total number of such people. 2  The total number of inhabitants constituting a particular race, class, or group in a specified area. 3  The act or process of furnishing with inhabitants. 4  Ecology All the organisms of a given species interacting in a specified area.