Stanford type A aortic dissection is a complex disease and a serious surgical emergency. The diagnosis is determined based on diagnostic imagines. Surgery is the mainstay of treatment, with high mortality and morbidity. This study aimed to comment on clinical and paraclinical characteristics and evaluate the results of surgical treatment of type A aortic dissection at Hanoi Heart Hospital within 5 years from 2015 to 2020. Methods: Retrospective and descriptive study of patients diagnosed with

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... pe A aortic dissection who were surgically treated at Hanoi Heart Hospital from January 2015 to May 2020. Results: 109 cases were included in the study with the mean age of 56.0 ± 14.4; 50 - 60 age accounted for the highest percentage (30.3%); men accounted for 67.9%. Classic type A aortic dissection in 95 cases (87.2%). Chest pain was the main clinical symptom (91.7%); 4.6% came to the hospital in a state of cardiogenic shock and circulatory arrest. The rate of Marfan phenotype was 13.8%. The most common surgery is replacing the ascending aorta (45.9%); total replacement of the aortic arch accounted for 17.4%; Total root replacement and aortic arch accounted for 3.7%. The average aortic pairing time was 120.7 ± 41.0 minutes, the mean running time was 179.7 ± 57.0 minutes. Re-operative bleeding accounted for 6,4%; cerebrovascular accident accounted for 2,8%. The early mortality rate after surgery was 9.2%. The mean follow-up time was 24.93 ± 16.13 months, the mean survival time was 52.0 ± 1.9 months, the survival rate was 88.1% after 1 year and 85.3% after 5 years. Conclusion: Early mortality, postoperative complications and survival rate after follow-up were positive with surgical technique and conditions of anesthesia and resuscitation at Hanoi Heart Hospital.