Study on Ketorolac for Improving Outcomes and Prognosis in Patients With Stanford Type A Aortic Dissection

Inclusion criteria The criteria for inclusion are: (1) Imaging diagnosis of ATAAD and planning for emergency surgery; (2) Age between 18 and 65 years; (3) Signed informed consent; (4) First median sternotomy; (5) Duration from symptom onset to surgery less than or equal to 7 days; (6) Preoperative data are complete; (7) Glasgow Coma Scale (GCS) score greater than or equal to 15, with no new focal neurological deficits. Exclusion criteria The criteria for exclusion include: (1) Extended periods of fasting or inability to feed oneself; (2) A history of cancer; (3) Weight below 50 kg; (4) Traumatic dissections of the aorta; (5) Individuals diagnosed with Marfan syndrome; (6) Preoperative vital sign instability necessitating mechanical assistance or resuscitation ; (7) The duration of preoperative tracheal intubation exceeds 3 days. (8) Disorders of consciousness, central nervous system issues, or signs of inadequate brain perfusion after admission; (9) Preoperative gastrointestinal involvement and intestinal dilation； (10) Clear signs of inadequate limb perfusion before the procedure; (11) Presence of organ perfusion insufficiency syndrome; (12) Patients needing preliminary surgical intervention to address organ perfusion issues; (13) A history of gastrointestinal ulcers or chronic inflammation of the gastrointestinal tract;;(14) Preoperative hepatic and renal dysfunction;(15) Allergies to ketorolac tromethamine, aspirin, or other NSAIDs; (16) Chronic inflammatory or autoimmune conditions requiring long-term hormone or NSAID use; (17) Absence of brain perfusion during deep hypothermic circulatory arrest; (18) A history of grade IV surgery or acute myocardial infarction within the last 90 days; (19) Previous cardiac or major vascular surgeries; (20) Pregnant or breastfeeding women; (21) Cardiopulmonary bypass (CPB) lasting over 4 hours, deep hypothermic circulatory arrest (DHCA) exceeding 40 minutes, or total surgical time over 10 hours; (22) Any other conditions considered inappropriate for participation by the researchers.