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.
However, some Western stockholders may be disappointed in the 22% premium over yesterdayâs closing price given that the company was trading as high as $45.72 per share a little over a year ago â and that was before its $1.6 billion purchase of Northern Tier Energy LP (NYSE:NTI).