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.
The current estimated human population for the planet earth in 2010 is 6,865,300,000 by the United States Census Bureau. The United Nations estimates that world population will be over the 7,000,000,000 mark in 2011. Recent U.N. organized surveys performed in multiple countries have found the average percentage of people who suffer from some sort of cancer is 31%.