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.
TransCanada Corporation is the parent company of TransCanada PipeLines Limited. The Company is focused on natural gas transmission and power services.TransCanada's network of pipeline transports the majority of Western Canada's natural gas production to markets in Canada and the United States.The Company also has interests in power plants in Canada and the United States.he Company is focused on natural gas transmission and power services. TransCanada's network of pipeline transports the majority of Western Canada's natural gas production to markets in Canada and the United States.