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.
In common usage, the word human generally refers to the only extant species of the genus Homo â anatomically and behaviorally modern Homo sapiens. Its usage often designates differences between that species as a whole and any other group or entity.he rapid advancement of scientific and medical understanding in the 19th and 20th centuries led to the development of fuel-driven technologies and improved health, causing the human population to rise exponentially. By 2014 the global human population was estimated to be around 7.2 billion.