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Related Concept Videos

Aortic Regurgitation III: Medical Management01:25

Aortic Regurgitation III: Medical Management

598
Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...
598

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Related Experiment Video

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Strategy to avoid patient-prosthesis mismatch: aortic root enlargement.

Dharmendra Kumar Srivastava1, Prokash Sanki, Subhankar Bhattacharya

  • 1Department of Cardiothoracic and Vascular Surgery, S.S.K.M. Hospital, Institute of Postgraduate Medical Education and Research, Kolkata, West Bengal, India.

Asian Cardiovascular & Thoracic Annals
|March 4, 2014
PubMed
Summary

Aortic root enlargement allows for larger prosthetic valve implantation, reducing patient-prosthesis mismatch after aortic valve replacement. This safe procedure improves valve hemodynamics and patient outcomes.

Keywords:
Aortic valveheart valve diseasesheart valve prosthesis implantationmitral valveprosthesis fitting

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Area of Science:

  • Cardiac Surgery
  • Cardiovascular Research
  • Prosthetic Valve Implantation

Background:

  • Effective orifice area matching body surface area is crucial for reducing mortality and morbidity in aortic valve replacement.
  • Patient-prosthesis mismatch can negatively impact outcomes following aortic valve replacement surgery.

Purpose of the Study:

  • To evaluate the safety and efficacy of aortic root enlargement to implant larger prosthetic valves.
  • To reduce or eliminate patient-prosthesis mismatch in patients undergoing aortic valve replacement.

Main Methods:

  • Aortic root enlargement using the Nunez procedure was performed in 17 patients.
  • Decision for aortic root enlargement was based on sizer negotiation, body surface area, or prosthesis type.
  • Autologous pericardial patch was used for aortic root enlargement.

Main Results:

  • Significant reductions in peak (12.8-16.5 mm Hg) and mean (10.2-12.6 mm Hg) pressure gradients were observed postoperatively.
  • Postoperative effective orifice areas ranged from 1.1-1.5 cm².
  • Patient-prosthesis mismatch was eliminated in 5 patients and reduced from severe to moderate in 11 patients.

Conclusions:

  • Aortic root enlargement is a safe and effective procedure for accommodating larger aortic valve prostheses.
  • Cardiac surgeons should consider aortic root enlargement to prevent patient-prosthesis mismatch without significant added time or cost.
  • This technique improves hemodynamic function and patient outcomes after aortic valve replacement.