Inter-beat (RR) Intervals. The time intervals between consecutive heart beats are customarily measured in the electrocardiogram from the beginning of a QRS complex to the beginning of the next QRS complex, so these intervals might be called QQ intervals, but they are conventionally named RR intervals.
Dubuque County, Iowa. Dubuque County is a county located in the U.S. state of Iowa. As of the 2010 census, the population was 93,653. The county seat is Dubuque. The county is named for Julien Dubuque, the first European settler of Iowa. Dubuque County comprises the Dubuque, IA Metropolitan Statistical Area, and is the seventh largest county by population in the state.
Clermont is a city in Fayette County, Iowa, United States. The population was 716 at the 2000 census. Clermont is home to Montauk, the mansion of former Iowa governor William Larrabee, along with much historic architecture. Scenes for the movie The Straight Story were filmed here. Clermont is located at 42Â°59â²58â³N 91Â°39â²17â³W / 42.99944Â°N 91.65472Â°W / 42.99944; -91.65472 (42.999339, -91.654699) on the Turkey River. According to the United States Census Bureau, the city has a total area of 1.1 square miles (2.8 kmÂ²), all of it land.