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.
o Corporate management owns 0.5 percent of the shares of integrated oil and natural. gas companies â compared to percent owned by other personal investors who 42. manage their holdings; own 47 percent owned or held by asset management. companies; 3 percent owned and managed directly by pension plans, and 7 percent.