Atrial tachycardia is defined as a supraventricular tachycardia (SVT) that does not require the atrioventricular (AV) junction, accessory pathways, or ventricular tissue for its initiation and maintenance.
Established in 1993, Genting Hong Kong already owns Asia-based Star Cruises and is a major shareholder of Norwegian Cruise Line Holdings, which owns Norwegian Cruise Line, Regent Seven Seas Cruises and Oceania Cruises. It's part of the Genting Group, a global hospitality and leisure company.
In 1989, the Holland America Line was purchased by Carnival Corp, thus becoming a British-American owned cruise line headquartered in Seattle in the United States. In 2003, Holland America announced its Signature of Excellence program. The ongoing program has focused on upgrading existing ships.