Atrial tachycardia is a supraventricular tachycardia (SVT) that does not require the atrioventricular (AV) junction, accessory pathways, or ventricular tissue for its initiation and maintenance.
Page Content. Northern Natural Gas Company (Northern) is a subsidiary of Berkshire Hathaway Energy based in Omaha, Nebraska and has been in business since 1930. Northern owns and operates the largest interstate natural gas pipeline system in the United States.
Nalcor Energy, Ltd. was formerly known as Energy Corporation of Newfoundland and Labrador and changed its name to Nalcor Energy, Ltd. in December 2008. The company was founded in 2007 and is based in St. John, Canada.