Initial Management of Aortic Dissection

Immediate Assessment and Stabilization

• The European Society of Cardiology recommends invasive monitoring with an arterial line and continuous three-lead ECG recording for accurate blood pressure management in patients with suspected aortic dissection 1

Blood Pressure and Heart Rate Control

• The European Society of Cardiology recommends administering intravenous beta-blockers as first-line therapy, with labetalol being preferred due to its alpha- and beta-blocking properties, to target systolic blood pressure <120 mmHg and heart rate ≤60 beats per minute 1
• If beta-blockers are contraindicated, intravenous non-dihydropyridine calcium channel blockers can be used for heart rate control, according to the European Society of Cardiology 1
• In cases of malperfusion, higher blood pressure may be tolerated to optimize perfusion to the threatened region, as recommended by the European Society of Cardiology 1

Type-Specific Management

Type A Dissection

• The aim of surgery is to prevent aortic rupture, pericardial tamponade, and relieve aortic regurgitation, according to the European Society of Cardiology 2
• Surgical options include implantation of a composite graft in the ascending aorta with or without reimplantation of coronary arteries, as recommended by the European Society of Cardiology 2

Type B Dissection

• Emergency intervention (preferably TEVAR - Thoracic Endovascular Aortic Repair) is recommended for complicated Type B dissection presenting with malperfusion syndrome, according to the European Society of Cardiology 1
• The European Society of Cardiology recommends emergency intervention for complicated Type B dissection presenting with intractable pain, rapidly expanding aortic diameter, periaortic or mediastinal hematoma, or dissection occurring in a previously aneurysmatic aorta 2

Special Considerations

• In patients with hereditary diseases (Marfan syndrome, Ehlers-Danlos syndrome), lifelong beta-adrenergic blockade is recommended for prevention of dissection, according to the European Society of Cardiology 3
• For pregnant patients with aortic dissection, management requires a multidisciplinary team at specialized centers, using drugs with the lowest teratogenic impact, as recommended by the European Society of Cardiology 1

Follow-up Care

• For patients with aortic dissection who can be managed conservatively and have achieved hemodynamic targets with intravenous anti-impulse therapy, switching to oral beta-blockers is recommended after 24 hours if gastrointestinal transit is preserved, according to the European Society of Cardiology 1
• Regular imaging follow-up is essential to monitor for potential complications such as false lumen expansion or aneurysm formation, as recommended by the European Society of Cardiology 3

Diagnostic Approach and Management of Suspected Aortic Dissection

Clinical Presentation and Diagnosis

• Patients with aortic dissection typically present with sudden, severe chest or back pain, often described as tearing or ripping in nature, and may have pulse deficits, neurological deficits, or a diastolic murmur indicative of aortic regurgitation, according to the European Heart Journal 4, 5
• The American College of Cardiology recommends that every patient with suspected aortic dissection should undergo urgent definitive imaging using transesophageal echocardiogram (TEE), computed tomographic imaging (CT), or magnetic resonance imaging (MRI) to identify or exclude thoracic aortic dissection, with a strength of evidence based on high-quality studies 6, 7

Initial Management

• The European Heart Journal suggests establishing intravenous access, obtaining blood samples, performing ECG, initiating continuous heart rate and blood pressure monitoring, providing pain relief with morphine sulfate, and transferring to intensive care unit for appropriate monitoring in patients with suspected aortic dissection 8, 9
• Reduce systolic blood pressure to 100-120 mmHg using IV beta-blockers as first-line therapy, with options including propranolol, esmolol, metoprolol, or labetalol, according to the European Heart Journal and the American College of Cardiology 8, 6, 10
• Target heart rate of 60 beats per minute or less, and for patients with severe hypertension despite beta-blockade, add sodium nitroprusside to further reduce blood pressure, as recommended by the European Heart Journal and the American College of Cardiology 6, 10

Diagnostic Imaging

• Perform chest X-ray in all stable patients with suspected aortic dissection, which will be abnormal in 60-90% of cases, but omit in unstable patients to avoid treatment delays, according to the European Heart Journal and the American College of Cardiology 8, 6
• Selection of specific imaging modality should be based on patient variables and institutional capabilities, with all three primary imaging techniques (TEE, CT, MRI) having comparable high sensitivity and specificity, as stated by the American College of Cardiology 6, 10

Surgical Consultation and Definitive Management

• Obtain urgent surgical consultation for all patients diagnosed with thoracic aortic dissection, regardless of anatomic location, and consider urgent evaluation for emergent surgical repair for Type A dissection, according to the American College of Cardiology 6, 10
• Initially manage Type B dissection medically unless life-threatening complications develop, such as malperfusion syndrome, progression of dissection, enlarging aneurysm, inability to control blood pressure or symptoms, as recommended by the American College of Cardiology 6, 10

Aortic Dissection Management

Mortality and Diagnosis

• The mortality rate is 1-2% per hour in untreated patients, with historical data showing only 15% of cases diagnosed before death, emphasizing the need for rapid diagnosis and treatment 11

Diagnostic Approach

• The European Society of Cardiology recommends that every patient with suspected aortic dissection requires urgent definitive imaging with CT angiography, transesophageal echocardiography (TEE), or MRI, with a sensitivity and specificity of >90% 11

Long-Term Management

• The European Heart Association suggests maintaining blood pressure <135/80 mmHg with beta-blockers as preferred agents, often requiring combination therapy, and recommends regular imaging surveillance to monitor for false lumen expansion, aneurysm formation, or progression of dissection 12
• The European Society of Cardiology recommends MRI as the preferred method for follow-up imaging, as it avoids radiation and nephrotoxic contrast, although CT is an acceptable alternative, particularly in patients >60 years 12

Special Considerations

• For patients with hereditary connective tissue disorders, such as Marfan syndrome, lifelong beta-adrenergic blockade is mandatory to prevent dissection, as recommended by the European Society of Cardiology 11
• In cases of Type A dissection with peripheral malperfusion, the European Heart Association suggests considering percutaneous revascularization first before surgical repair to allow ischemic injury to resolve, as 30-day mortality is largely dependent on severity and duration of ischemia 13