A nuclear stress test will take much longer on the order of a few hours because of the imaging before and after that needs to occur. I suggest that you give your primary care physician or cardiologist a call and ask first what type of stress test you have having.
Achieved status is a concept developed by the anthropologist Ralph Linton denoting a social position that a person can acquire on the basis of merit; it is a position that is earned or chosen. It is the opposite of ascribed status. It reflects personal skills, abilities, and efforts.
Socioeconomic status is a combination of an individuals work status as well as the individual's economic position based on income, education, and occupational prestige. This status has more movement and or change over time. For more information on social class, check out Weber or Marx.