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.
The company was incorporated in 1930 and is based in Houston, Texas. As of December 10, 2015, Natural Gas Pipeline Company of America, LLC operates as a subsidiary of Brookfield Infrastructure Partners L.P. and Kinder Morgan, Inc. Detailed Description.