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.
It might surprise you to learn which of the big six suppliers are owned and operated by foreign companies. Hereâs a breakdown of where each big six companyâs ownership lies. As its name suggests, British Gas is indeed British-owned. Centrica, British Gasâ parent company, is a multinational utility company based in Windsor, Berkshire.