What are the indications for the Bentall procedure?

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Last updated: April 4, 2026 • View editorial policy

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Indications for Bentall Procedure

The Bentall procedure is indicated when aneurysmal disease of the aortic root extends below the sinotubular junction with involvement of the aortic sinuses and the aortic valve cannot be spared or is diseased, requiring composite replacement of both the aortic root and valve. 1

Primary Anatomic Indication

The Bentall procedure specifically addresses aortic root pathology where valve-sparing techniques are not feasible. According to the 2024 ESC Guidelines, when aneurysms extend proximally below the sinotubular junction with involvement of aortic sinuses, the surgical approach depends on the aortic annulus and valve condition—if the aortic valve cusps are NOT pliable or suitable for preservation, composite replacement with the Bentall procedure is indicated 1.

Size-Based Thresholds for Surgery

Tricuspid Aortic Valve

  • ≥55 mm: Surgery is recommended (Class I, Level B) for aortic root or ascending aorta dilatation 1
  • >52 mm: Ascending aortic replacement should be considered in patients with low predicted surgical risk (Class IIa, Level B) 1
  • ≥45-50 mm: Should be considered when undergoing concomitant surgery for aortic valve disease with low surgical risk 1

Marfan Syndrome (Higher Risk Population)

  • ≥5.0 cm (50 mm): Primary threshold for elective aortic root replacement 2
  • Cross-sectional area/height ratio ≥10 cm²/m: Alternative indication when indexed measurements are used 2
  • Earlier intervention (<5.0 cm) is reasonable with:
    • Rapid aortic growth (≥0.3 cm/year or ≥3 mm/year) 2
    • Family history of aortic dissection 2
    • Desire for pregnancy 2
    • Severe valve regurgitation 2

Bicuspid Aortic Valve

Historical data suggests intervention at >5 cm in patients with bicuspid aortic valve and ascending aortic dilatation 3

Clinical Indications Beyond Size

The Bentall procedure is performed for:

  1. Aortic root aneurysm with aortic valve dysfunction (most common indication—59.8% in contemporary series) 4
  2. Acute Type A aortic dissection involving the root (19.6% of cases) 4
  3. Aortic valve endocarditis with root involvement (3.6-14% of cases) 4, 5
  4. Marfan syndrome with root dilatation (17% of cases) 4
  5. Failed previous aortic valve replacement with subsequent root dilatation requiring composite replacement 6

When Bentall is Chosen Over Valve-Sparing

Valve-sparing root replacement (David or Yacoub procedures) is recommended when aortic valve cusps are pliable and durable results are expected in experienced centers (Class I, Level B). 1 The Bentall procedure becomes the procedure of choice when:

  • Aortic valve cusps are NOT pliable or are diseased 1
  • Significant aortic valve stenosis or regurgitation exists 4
  • Endocarditis has damaged the valve 5, 6
  • Patient age or comorbidities favor a single definitive operation over potential valve deterioration with valve-sparing techniques 2

Critical Considerations

The "root phenotype" (dilatation primarily at the aortic root) carries higher risk than isolated ascending aorta dilatation, with higher velocity of progression and adverse aortic event risk. 1 This anatomic pattern particularly favors root replacement procedures.

Surgical mortality in experienced centers is now <1% for elective Bentall procedures 1, making prophylactic intervention at appropriate thresholds highly favorable from a risk-benefit perspective. The 2022 ACC/AHA guidelines emphasize that aortic root replacement should be performed by experienced surgeons in Multidisciplinary Aortic Teams 2.

Post-Operative Requirements

  • Lifelong VKA anticoagulation is mandatory for all patients receiving a Bentall procedure with a mechanical heart valve prosthesis (Class I, Level B) 1
  • For bioprosthetic Bentall procedures, single antiplatelet therapy (aspirin 75-100 mg/day) or oral anticoagulation with VKA should be considered for the first 3 months 1

Common Pitfall

Do not delay surgery in Marfan syndrome patients waiting to reach 55 mm—the threshold is 50 mm, and additional risk factors may warrant even earlier intervention. Over 60% of non-Marfan, non-bicuspid valve patients with acute Type A dissection have non-dilated ascending aorta before dissection 1, emphasizing that size alone doesn't capture all risk, but remains the primary surgical trigger.

References

3
Research

Three faces of the Bentall procedure.

Journal of cardiac surgery, 1994

4
Research

Modified Bentall procedure: A 15-year single-center clinical experience.

Asian cardiovascular & thoracic annals, 2022

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This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.