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- W3132500658 abstract "Central MessageIncreasing evidence supports the safety and efficacy of preserving the pulmonary autograft valve after Ross failure, but durability varies substantially with the mode of valve failure.See Commentary on page XXX. Increasing evidence supports the safety and efficacy of preserving the pulmonary autograft valve after Ross failure, but durability varies substantially with the mode of valve failure. See Commentary on page XXX. Aortic valve replacement is the most common valve operation performed in the United States. Options for replacement include mechanical valves, bioprosthetic valves and, less commonly, aortic valve xenografts, aortic valve homografts, and pulmonary autografts. Each substitute has associated risks and benefits. Bioprostheses are associated with a greater risk of reoperation than mechanical valves because of structural valve deterioration, but mechanical valves typically necessitate lifelong anticoagulation, which increases the risk of hemorrhage and thromboembolism.1Goldstone A.B. Chiu P. Baiocchi M. Lingala B. Patrick W.L. Fischbein M.P. et al.Mechanical or biologic prostheses for aortic-valve and mitral-valve replacement.N Engl J Med. 2017; 377: 1847-1857Crossref PubMed Scopus (203) Google Scholar As a result of these associated risks, older patients often opt for bioprostheses whereas younger patients opt for mechanical prostheses. However, reports of improved durability and the initial success of transcatheter aortic valve-in-valve replacement has led to implantation of surgical bioprostheses in younger and younger individuals.1Goldstone A.B. Chiu P. Baiocchi M. Lingala B. Patrick W.L. Fischbein M.P. et al.Mechanical or biologic prostheses for aortic-valve and mitral-valve replacement.N Engl J Med. 2017; 377: 1847-1857Crossref PubMed Scopus (203) Google Scholar Surgeons may also replace diseased aortic valves with a living-valve substitute through the Ross procedure.2Ross D.N. Replacement of aortic and mitral valves with a pulmonary autograft.Lancet. 1967; 2: 956-958Abstract PubMed Google Scholar That living substitute, the pulmonary autograft, offers excellent hemodynamics and avoids the therapeutic anticoagulation needed for mechanical prostheses.3Mazine A. El-Hamamsy I. Verma S. Peterson M.D. Bonow R.O. Yacoub M.H. et al.Ross procedure in adults for cardiologists and cardiac surgeons: JACC state-of-the-art review.J Am Coll Cardiol. 2018; 72: 2761-2777Crossref PubMed Scopus (54) Google Scholar Drawbacks include the greater technical complexity of the Ross procedure than an isolated aortic valve replacement, trading single-valve disease for double-valve surveillance, and more difficult reoperations if the procedure ultimately fails. Reoperation for pulmonary autograft root dilation or autograft valve regurgitation typically consists of autograft removal and replacement with a mechanical or bioprosthetic valved-conduit. However, increasing familiarity with valve-sparing root replacement and aortic valve repair has led surgeons to preserve and/or repair the leaflets of the living autograft at the time of reoperation.4de Kerchove L. Boodhwani M. Etienne P.Y. Poncelet A. Glineur D. Noirhomme P. et al.Preservation of the pulmonary autograft after failure of the Ross procedure.Eur J Cardiothorac Surg. 2010; 38: 326-332Crossref PubMed Scopus (25) Google Scholar Although data are still limited, valve-sparing reoperations for failed pulmonary autografts carry low risk and low reintervention rates in the first decade postoperatively.5Mookhoek A. de Kerchove L. El Khoury G. Weimar T. Luciani G.B. Mazzucco A. et al.European multicenter experience with valve-sparing reoperations after the Ross procedure.J Thorac Cardiovasc Surg. 2015; 150: 1132-1137Abstract Full Text Full Text PDF PubMed Scopus (22) Google Scholar Failure requiring reintervention after the Ross procedure typically involves the pulmonary autograft. Mechanisms for failure include primary leaflet failure and dilation of the annulus, sinuses of Valsalva, or sinotubular junction.3Mazine A. El-Hamamsy I. Verma S. Peterson M.D. Bonow R.O. Yacoub M.H. et al.Ross procedure in adults for cardiologists and cardiac surgeons: JACC state-of-the-art review.J Am Coll Cardiol. 2018; 72: 2761-2777Crossref PubMed Scopus (54) Google Scholar,6Hokken R.B. Takkenberg J.J. van Herwerden L.A. Roelandt J.R. Bogers A.J. Excessive pulmonary autograft dilatation causes important aortic regurgitation.Heart. 2003; 89: 933-934Crossref PubMed Scopus (21) Google Scholar Groups that report exceedingly high rates of autograft failure have also demonstrated that much of the increase in neoaortic root diameter occurred before hospital discharge.6Hokken R.B. Takkenberg J.J. van Herwerden L.A. Roelandt J.R. Bogers A.J. Excessive pulmonary autograft dilatation causes important aortic regurgitation.Heart. 2003; 89: 933-934Crossref PubMed Scopus (21) Google Scholar Therefore, Ross procedure advocates employ technical modifications to promote long-term autograft durability by preventing dilation. One such technique includes implanting the autograft deeper—in an intra-annular fashion—so that the autograft annulus is stabilized by the native aortic annulus.3Mazine A. El-Hamamsy I. Verma S. Peterson M.D. Bonow R.O. Yacoub M.H. et al.Ross procedure in adults for cardiologists and cardiac surgeons: JACC state-of-the-art review.J Am Coll Cardiol. 2018; 72: 2761-2777Crossref PubMed Scopus (54) Google Scholar Another technique, which we prefer, includes externally supporting the autograft by reimplanting the entire pulmonic root within a Dacron graft and creating neosinuses with anticommissural plication (Figure 1, A) and then implanting into the aortic annulus (Figure 1, B). Patients at greater risk for autograft failure include those with native aortic annulus, root, or ascending aortic dilatation, and those with aortic insufficiency.7David T.E. Woo A. Armstrong S. Maganti M. When is the Ross operation a good option to treat aortic valve disease?.J Thorac Cardiovasc Surg. 2010; 139: 68-73Abstract Full Text Full Text PDF PubMed Scopus (78) Google Scholar In these patients, adjunctive measures such as native aortic annuloplasty or external reinforcement of the autograft are employed. Of paramount importance is strict systemic blood pressure control (target <110 mm Hg) in the first year after surgery, which is believed to facilitate autograft adaptation to the systemic circulation. With these measures and technical considerations, a handful of groups report outstanding long-term pulmonary autograft durability.8David T.E. Ouzounian M. David C.M. Lafreniere-Roula M. Manlhiot C. Late results of the Ross procedure.J Thorac Cardiovasc Surg. 2019; 157: 201-208Abstract Full Text Full Text PDF PubMed Scopus (38) Google Scholar, 9Martin E. Mohammadi S. Jacques F. Kalavrouziotis D. Voisine P. Doyle D. et al.Clinical outcomes following the ross procedure in adults: a 25-year longitudinal study.J Am Coll Cardiol. 2017; 70: 1890-1899Crossref PubMed Scopus (46) Google Scholar, 10Mastrobuoni S. de Kerchove L. Solari S. Astarci P. Poncelet A. Noirhomme P. et al.The Ross procedure in young adults: over 20 years of experience in our Institution.Eur J Cardiothorac Surg. 2016; 49: 507-512Crossref PubMed Scopus (45) Google Scholar, 11Sievers H.H. Stierle U. Charitos E.I. Takkenberg J.J.M. Hörer J. Lange R. et al.A multicentre evaluation of the autograft procedure for young patients undergoing aortic valve replacement: update on the German Ross Registry.Eur J Cardiothorac Surg. 2016; 49: 212-218Crossref PubMed Scopus (75) Google Scholar With well more than 3000 patients who underwent the Ross procedure as adults between studies, estimated 20-year incidence of autograft reintervention ranged from 11% to 25%.8David T.E. Ouzounian M. David C.M. Lafreniere-Roula M. Manlhiot C. Late results of the Ross procedure.J Thorac Cardiovasc Surg. 2019; 157: 201-208Abstract Full Text Full Text PDF PubMed Scopus (38) Google Scholar, 9Martin E. Mohammadi S. Jacques F. Kalavrouziotis D. Voisine P. Doyle D. et al.Clinical outcomes following the ross procedure in adults: a 25-year longitudinal study.J Am Coll Cardiol. 2017; 70: 1890-1899Crossref PubMed Scopus (46) Google Scholar, 10Mastrobuoni S. de Kerchove L. Solari S. Astarci P. Poncelet A. Noirhomme P. et al.The Ross procedure in young adults: over 20 years of experience in our Institution.Eur J Cardiothorac Surg. 2016; 49: 507-512Crossref PubMed Scopus (45) Google Scholar, 11Sievers H.H. Stierle U. Charitos E.I. Takkenberg J.J.M. Hörer J. Lange R. et al.A multicentre evaluation of the autograft procedure for young patients undergoing aortic valve replacement: update on the German Ross Registry.Eur J Cardiothorac Surg. 2016; 49: 212-218Crossref PubMed Scopus (75) Google Scholar Some note that there is a slow deterioration of autograft valve function over time.8David T.E. Ouzounian M. David C.M. Lafreniere-Roula M. Manlhiot C. Late results of the Ross procedure.J Thorac Cardiovasc Surg. 2019; 157: 201-208Abstract Full Text Full Text PDF PubMed Scopus (38) Google Scholar,12Sievers H.H. Stierle U. Petersen M. Klotz S. Richardt D. Diwoky M. et al.Valve performance classification in 630 subcoronary Ross patients over 22 years.J Thorac Cardiovasc Surg. 2018; 156: 79-86Abstract Full Text Full Text PDF PubMed Scopus (33) Google Scholar The mechanism for failure—structural valve degeneration versus autograft root dilation—affects the possibility for sparing the autograft valve at the time of reintervention. Indications for reoperation on a failed autograft mirror those for native aortic insufficiency.3Mazine A. El-Hamamsy I. Verma S. Peterson M.D. Bonow R.O. Yacoub M.H. et al.Ross procedure in adults for cardiologists and cardiac surgeons: JACC state-of-the-art review.J Am Coll Cardiol. 2018; 72: 2761-2777Crossref PubMed Scopus (54) Google Scholar Reports of pulmonary autograft dissection are rare,13Peeters G. Arrigoni S.C. Schoof P. Accord R.E. Mariani M.A. Acute type A dissection 18 years after a Ross operation: the old prejudice.Ann Thorac Surg. 2019; 107: e255-e257Abstract Full Text Full Text PDF Google Scholar but it is reasonable to reintervene for aortic diameters >50 mm in the absence of autograft insufficiency. Reoperation after a Ross procedure is more complex and more akin to reoperative aortic root surgery than reoperation after conventional aortic valve replacement. Complexity further increases when both the pulmonary autograft and pulmonary homograft require reintervention. A surgeon must be comfortable with a variety of aortic and pulmonary root operations if reoperating on a patient after a Ross procedure. Despite this, mortality after reoperation for Ross failure is exceedingly low and ranges from 0% to 3% across published series.10Mastrobuoni S. de Kerchove L. Solari S. Astarci P. Poncelet A. Noirhomme P. et al.The Ross procedure in young adults: over 20 years of experience in our Institution.Eur J Cardiothorac Surg. 2016; 49: 507-512Crossref PubMed Scopus (45) Google Scholar,11Sievers H.H. Stierle U. Charitos E.I. Takkenberg J.J.M. Hörer J. Lange R. et al.A multicentre evaluation of the autograft procedure for young patients undergoing aortic valve replacement: update on the German Ross Registry.Eur J Cardiothorac Surg. 2016; 49: 212-218Crossref PubMed Scopus (75) Google Scholar,14Mazine A. David T.E. Rao V. Hickey E.J. Christie S. Manlhiot C. et al.Long-term outcomes of the Ross procedure versus mechanical aortic valve replacement: propensity-matched cohort study.Circulation. 2016; 134: 576-585Crossref PubMed Scopus (71) Google Scholar As is true for other aortic operations,15Hughes G.C. Zhao Y. Rankin J.S. Scarborough J.E. O'Brien S. Bavaria J.E. et al.Effects of institutional volumes on operative outcomes for aortic root replacement in North America.J Thorac Cardiovasc Surg. 2013; 145: 166-170Abstract Full Text Full Text PDF PubMed Scopus (108) Google Scholar,16Goldstone A.B. Chiu P. Baiocchi M. Lingala B. Lee J. Rigdon J. et al.Interfacility transfer of Medicare beneficiaries with acute type A aortic dissection and regionalization of care in the United States.Circulation. 2019; 140: 1239-1250Crossref PubMed Scopus (20) Google Scholar a positive volume–outcome relationship likely exists for Ross reoperations. The published series describing outcomes of reoperations after the Ross procedure are notably from expert centers. Therefore, the generalizability of their results is questionable. The pulmonary autograft valve may be spared at the time of reoperation to preserve the living-valve substitute, which does not require anticoagulation. In experienced hands, salvage of the autograft valve approaches or exceeds 50%,5Mookhoek A. de Kerchove L. El Khoury G. Weimar T. Luciani G.B. Mazzucco A. et al.European multicenter experience with valve-sparing reoperations after the Ross procedure.J Thorac Cardiovasc Surg. 2015; 150: 1132-1137Abstract Full Text Full Text PDF PubMed Scopus (22) Google Scholar,17Martin E. Laurin C. Jacques F. Houde C. Cote J.-M. Chetaille P. et al.More than 25 years of experience with the Ross procedure in children: a single-center experience.Ann Thorac Surg. 2020; 110: 638-644Abstract Full Text Full Text PDF Scopus (6) Google Scholar,18Liebrich M. Weimar T. Tzanavaros I. Roser D. Doll K.N. Hemmer W.B. The David procedure for salvage of a failing autograft after the Ross operation.Ann Thorac Surg. 2014; 98: 2046-2052Abstract Full Text Full Text PDF PubMed Scopus (11) Google Scholar but this depends on the mechanism of autograft failure. Autograft valve-sparing reoperations may be performed at very low risk in experienced centers. In the largest multicenter experience of valve-sparing reoperations after the Ross procedure to date, Mookhoek and colleagues5Mookhoek A. de Kerchove L. El Khoury G. Weimar T. Luciani G.B. Mazzucco A. et al.European multicenter experience with valve-sparing reoperations after the Ross procedure.J Thorac Cardiovasc Surg. 2015; 150: 1132-1137Abstract Full Text Full Text PDF PubMed Scopus (22) Google Scholar achieved a 1.2% operative mortality. In fact, despite longer operative times and nearly 1 in 5 patients undergoing concomitant replacement of the pulmonary outflow graft, the operative mortality achieved by these experienced surgeons falls within the range that the Society of Thoracic Surgeons risk calculator predicts for a reoperative aortic valve replacement if calculated for patients with the average characteristics of the study population. Although the low operative mortality may result from selecting healthier patients for valve-sparing procedures, it also speaks to the technical expertise of the surgeons who performed the operations in the multicenter study. Other case series affirm that autograft valve-sparing root replacements may be performed at low risk to the patient.19Ratschiller T. Eva S.D. Schimetta W. Paulus P. Müller H. Zierer A. et al.Valve-sparing root replacement for freestanding pulmonary autograft aneurysm after the Ross procedure.J Thorac Cardiovasc Surg. 2018; 155: 2390-2397Abstract Full Text Full Text PDF PubMed Scopus (4) Google Scholar However, one must take publication bias into consideration and one's own experience when considering whether these operations should be routinely performed. The available operations to spare the autograft valve depend on the mechanism of autograft failure. If the primary indication for reoperation is root aneurysm (Figure 2, A), then a valve-sparing root replacement must be performed. Both root reimplantation and root remodeling techniques have been reported for failed autografts. Although the limited available data do not demonstrate a significant difference in durability between root-reimplantation and root-remodeling techniques for sparing failed autografts,5Mookhoek A. de Kerchove L. El Khoury G. Weimar T. Luciani G.B. Mazzucco A. et al.European multicenter experience with valve-sparing reoperations after the Ross procedure.J Thorac Cardiovasc Surg. 2015; 150: 1132-1137Abstract Full Text Full Text PDF PubMed Scopus (22) Google Scholar,19Ratschiller T. Eva S.D. Schimetta W. Paulus P. Müller H. Zierer A. et al.Valve-sparing root replacement for freestanding pulmonary autograft aneurysm after the Ross procedure.J Thorac Cardiovasc Surg. 2018; 155: 2390-2397Abstract Full Text Full Text PDF PubMed Scopus (4) Google Scholar we favor the reimplantation technique in all scenarios (Figure 2, A-D).20Goldstone A.B. Woo Y.J. Pulmonary autograft leaflet repair and valve sparing root replacement to correct late failure of the ross procedure.J Card Surg. 2013; 28: 496-499Crossref PubMed Scopus (3) Google Scholar,21Goldstone A.B. Jensen C.W. Bilbao M.S. Woo Y.J. Autograft valve-sparing root replacement for late Ross failure during quadruple-valve surgery.Ann Thorac Cardiovasc Surg. 2017; 23: 313-315Crossref PubMed Scopus (0) Google Scholar The autograft root is dissected and coronary buttons are mobilized in a similar fashion to conventional reoperative root surgery, except the autograft valve is preserved (Figure 2, B). It is important to free the aortic root circumferentially down to the basal ring. This may be particularly difficult if the pulmonary homograft is very adherent. If excessively adherent, one can cut a small notch into the Dacron graft to accommodate this region. We prefer to use a straight graft (Terumo Medical, Somerset, NJ) instead of a Valsalva graft (Terumo) and size the graft by adding 3 to the largest Medtronic Freestyle sizer, which passes fully through the aortic annulus.22Paulsen M.J. Imbrie-Moore A.M. Baiocchi M. Wang H. Hironaka C.E. Lucian H.J. et al.Comprehensive ex vivo comparison of 5 clinically used conduit configurations for valve-sparing aortic root replacement using a 3-dimensional-printed heart simulator.Circulation. 2020; 142: 1361-1373Crossref PubMed Scopus (2) Google Scholar In most cases, a 28 graft is used, although occasionally a 30 graft is needed for larger men and a 26 graft is needed for smaller woman. Twelve subannular sutures anchor the graft in a coronet fashion. The commissures are mounted within the graft 120° apart from one another (Figure 2, C). If prolapse is detected during initial valve analysis, it can be addressed by mounting the 2 commissures of the prolapsed cusp slightly higher than the commissure opposite the prolapsed cusp, thereby slightly elevating the cusp. Alternatively, these 2 commissures can be mounted slightly further apart than 120°, likewise slightly elevating the prolapsed cusp. The valve is reassessed after completion of the secondary suture line (Figure 2, D). Residual cusp prolapse can then be repaired with central, paracentral, or near-commissural plication, depending on the local anatomy and free margin alignment. After the left coronary button is reimplanted, the autograft valve is tested by administering cold blood down the graft. Palpating the graft will provide an understanding of the pressure the reimplanted valve is holding. We also disconnect the left ventricular vent tubing and assess for the absence of blood rising within the vent itself. Most importantly, transesophageal echocardiographic color-flow visualization of a long-axis view of the aortic valve will reveal aortic regurgitation. Difficulty with establishing a perfect view due to an empty left ventricle is a good sign that very little if any blood is regurgitating. The right coronary button is reimplanted after the valve repair is deemed satisfactory. Note that the pulmonary homograft does not always need to be completely removed. While usually calcified, it can be opened anteriorly through the annulus and into the right ventricular outflow tract to eliminate any stenosis (Figure 2, E). The valve cusps are removed (Figure 2, F) and a new bioprosthetic valve may be sewn in a running fashion into the back wall of the homograft at any level—ideally the least calcified portion—proximal to the pulmonary artery bifurcation. The remainder of the right ventricular outflow tract and pulmonary artery is reconstructed with bovine pericardium, which is also anastomosed to the anterior aspect of the bioprosthetic valve sewing ring to complete the valve implantation. Alternatively, the pulmonary homograft can be completely (or near completely) removed and replaced with a new pulmonary homograft. Risk for reoperation is substantially lower with receipt of a pulmonary homograft compared with a bioprosthetic valve during the index Ross procedure,11Sievers H.H. Stierle U. Charitos E.I. Takkenberg J.J.M. Hörer J. Lange R. et al.A multicentre evaluation of the autograft procedure for young patients undergoing aortic valve replacement: update on the German Ross Registry.Eur J Cardiothorac Surg. 2016; 49: 212-218Crossref PubMed Scopus (75) Google Scholar whether this relationship extends to those after valve-sparing procedures is not yet known. When aortic insufficiency is the primary indication for reoperation, then an isolated valve repair with or without annuloplasty may be considered. Techniques for valve repair include those already described for treatment of isolated aortic insufficiency, including central leaflet plication and pericardial patch reconstruction. However, the available data on isolated autograft valve repair are sobering. Isolated autograft valve repair, isolated aortic regurgitation, and severe aortic regurgitation are the strongest risk factors for reintervention after autograft valve-sparing reoperations.4de Kerchove L. Boodhwani M. Etienne P.Y. Poncelet A. Glineur D. Noirhomme P. et al.Preservation of the pulmonary autograft after failure of the Ross procedure.Eur J Cardiothorac Surg. 2010; 38: 326-332Crossref PubMed Scopus (25) Google Scholar,5Mookhoek A. de Kerchove L. El Khoury G. Weimar T. Luciani G.B. Mazzucco A. et al.European multicenter experience with valve-sparing reoperations after the Ross procedure.J Thorac Cardiovasc Surg. 2015; 150: 1132-1137Abstract Full Text Full Text PDF PubMed Scopus (22) Google Scholar,23Luciani G.B. Lucchese G. De Rita F. Puppini G. Faggian G. Mazzucco A. Reparative surgery of the pulmonary autograft: experience with Ross reoperations.Eur J Cardiothorac Surg. 2012; 41: 1309-1314Crossref PubMed Scopus (24) Google Scholar It is unclear from the published data whether isolated autograft valve repair is typically inadequate or if the underlying disease process driving isolated aortic insufficiency begets suboptimal outcomes of valve-sparing reoperations. More than likely it is the latter; severe, isolated aortic insufficiency results from autograft cusp degeneration, which may preclude a durable repair. For that reason, significant cusp fenestration, calcification, or destruction (for example, with endocarditis) may be relative contraindications to valve-sparing reoperation.5Mookhoek A. de Kerchove L. El Khoury G. Weimar T. Luciani G.B. Mazzucco A. et al.European multicenter experience with valve-sparing reoperations after the Ross procedure.J Thorac Cardiovasc Surg. 2015; 150: 1132-1137Abstract Full Text Full Text PDF PubMed Scopus (22) Google Scholar,19Ratschiller T. Eva S.D. Schimetta W. Paulus P. Müller H. Zierer A. et al.Valve-sparing root replacement for freestanding pulmonary autograft aneurysm after the Ross procedure.J Thorac Cardiovasc Surg. 2018; 155: 2390-2397Abstract Full Text Full Text PDF PubMed Scopus (4) Google Scholar At the very least, one must have an informed discussion with the patient regarding the questionable durability of such a repair. Long-term follow-up data after valve-sparing reoperations for failed pulmonary autografts are very limited. Most series focus on short-term outcomes, although a few report follow-up ≥5 years after valve-sparing reoperations.5Mookhoek A. de Kerchove L. El Khoury G. Weimar T. Luciani G.B. Mazzucco A. et al.European multicenter experience with valve-sparing reoperations after the Ross procedure.J Thorac Cardiovasc Surg. 2015; 150: 1132-1137Abstract Full Text Full Text PDF PubMed Scopus (22) Google Scholar,19Ratschiller T. Eva S.D. Schimetta W. Paulus P. Müller H. Zierer A. et al.Valve-sparing root replacement for freestanding pulmonary autograft aneurysm after the Ross procedure.J Thorac Cardiovasc Surg. 2018; 155: 2390-2397Abstract Full Text Full Text PDF PubMed Scopus (4) Google Scholar Reinterventions after valve-sparing reoperations are not uncommon. Among the 81 patients who underwent valve-sparing reoperations in the multicenter European experience, 15 patients required surgical reintervention.5Mookhoek A. de Kerchove L. El Khoury G. Weimar T. Luciani G.B. Mazzucco A. et al.European multicenter experience with valve-sparing reoperations after the Ross procedure.J Thorac Cardiovasc Surg. 2015; 150: 1132-1137Abstract Full Text Full Text PDF PubMed Scopus (22) Google Scholar Overall, the estimated incidence of reintervention at 8 years was 24%. Reintervention was particularly high among patients who underwent isolated autograft valve repair (n = 7 of 11; 67%), and much lower among patients who underwent autograft valve-sparing root replacement (n = 8 of 70; 11%). In a separate series of 27 patients who underwent autograft valve-sparing root replacement, the estimated incidence of reoperation at 5 years was 13.4%.19Ratschiller T. Eva S.D. Schimetta W. Paulus P. Müller H. Zierer A. et al.Valve-sparing root replacement for freestanding pulmonary autograft aneurysm after the Ross procedure.J Thorac Cardiovasc Surg. 2018; 155: 2390-2397Abstract Full Text Full Text PDF PubMed Scopus (4) Google Scholar Notably, this series did not attempt to spare valves with severe prolapse or leaflet degeneration, given the high reintervention rates associated with complex leaflet repair in this setting. The initial type of Ross procedure (complete root, supported, or subcoronary) may impact the likelihood with which the autograft valve may be spared at reoperation.5Mookhoek A. de Kerchove L. El Khoury G. Weimar T. Luciani G.B. Mazzucco A. et al.European multicenter experience with valve-sparing reoperations after the Ross procedure.J Thorac Cardiovasc Surg. 2015; 150: 1132-1137Abstract Full Text Full Text PDF PubMed Scopus (22) Google Scholar The supported Ross is associated with a greater risk of reintervention after valve-sparing reoperation. The theory behind this association is that the native geometry of the autograft root may be distorted when incorporated within a cylindrical graft, thereby leading to premature cusp prolapse and degeneration. In contrast, complete root replacement most commonly fails because of autograft dilation, which may be more amenable to a valve-sparing reoperation. Overall, survival after valve-sparing reoperation for Ross failure is excellent (85%-90% at 8-10 years),5Mookhoek A. de Kerchove L. El Khoury G. Weimar T. Luciani G.B. Mazzucco A. et al.European multicenter experience with valve-sparing reoperations after the Ross procedure.J Thorac Cardiovasc Surg. 2015; 150: 1132-1137Abstract Full Text Full Text PDF PubMed Scopus (22) Google Scholar,19Ratschiller T. Eva S.D. Schimetta W. Paulus P. Müller H. Zierer A. et al.Valve-sparing root replacement for freestanding pulmonary autograft aneurysm after the Ross procedure.J Thorac Cardiovasc Surg. 2018; 155: 2390-2397Abstract Full Text Full Text PDF PubMed Scopus (4) Google Scholar and supports the benefits of a durable, anticoagulation-free, living-valve substitute. These survival rates are consistent with some studies investigating survival after the initial Ross procedure,24Bove T. Bradt N. Martens T. De Wolf D. François K. de Beco G. et al.The pulmonary autograft after the Ross operation: results of 25 year follow-up in a pediatric cohort.Ann Thorac Surg. 2021; 111: 159-167Abstract Full Text Full Text PDF Scopus (4) Google Scholar although they are lower than that of a randomized trial comparing the Ross procedure to aortic homograft root replacement.25El-Hamamsy I. Eryigit Z. Stevens L.M. Sarang Z. George R. Clark L. et al.Long-term outcomes after autograft versus homograft aortic root replacement in adults with aortic valve disease: a randomised controlled trial.Lancet. 2010; 376: 524-531Abstract Full Text Full Text PDF PubMed Scopus (197) Google Scholar Our approach to valve-sparing reoperations after Ross failure mirrors our approach to aortic valve-sparing operations in general. We do not advocate an age cutoff after which a patient is no longer a candidate. Coexistent heart disease and need for autograft leaflet repair are also not contraindications. However, it is important to counsel patients that the durability of a valve-sparing reoperation may be limited in the setting of organic disease of the autograft valve and severe aortic insufficiency, even in the most experienced of hands. Valve-sparing reoperations should generally be avoided when significant leaflet calcification and destruction are present.4de Kerchove L. Boodhwani M. Etienne P.Y. Poncelet A. Glineur D. Noirhomme P. et al.Preservation of the pulmonary autograft after failure of the Ross procedure.Eur J Cardiothorac Surg. 2010; 38: 326-332Crossref PubMed Scopus (25) Google Scholar,5Mookhoek A. de Kerchove L. El Khoury G. Weimar T. Luciani G.B. Mazzucco A. et al.European multicenter experience with valve-sparing reoperations after the Ross procedure.J Thorac Cardiovasc Surg. 2015; 150: 1132-1137Abstract Full Text Full Text PDF PubMed Scopus (22) Google Scholar,19Ratschiller T. Eva S.D. Schimetta W. Paulus P. Müller H. Zierer A. et al.Valve-sparing root replacement for freestanding pulmonary autograft aneurysm after the Ross procedure.J Thorac Cardiovasc Surg. 2018; 155: 2390-2397Abstract Full Text Full Text PDF PubMed Scopus (4) Google Scholar,23Luciani G.B. Lucchese G. De Rita F. Puppini G. Faggian G. Mazzucco A. Reparative surgery of the pulmonary autograft: experience with Ross reoperations.Eur J Cardiothorac Surg. 2012; 41: 1309-1314Crossref PubMed Scopus (24) Google Scholar There is no perfect substitute for the aortic valve in the young adult. Surgeons must weigh the risks and benefits of a growing number of possible therapies in a probabilistic manner, and of course respect patient preferences and social circumstances. Selecting the Ross procedure for an index operation is a difficult decision in and of itself, and selecting to preserve the autograft valve after failure may be even more difficult. The patient who undergoes a successful, durable valve-sparing reoperation will benefit greatly from this anticoagulant-free option. In contrast, the patient who requires yet another reoperation for the autograft failing—not once, but twice—has suffered. A small, but growing body of literature supports the feasibility and safety of valve-sparing reoperations for patients with a failed Ross. A recent revival of interest in the Ross procedure as a treatment for aortic valve disease may enhance the role for autograft valve-sparing reoperations. As the field builds experience with valve-sparing reoperations, it is essential that we understand the long-term and very long-term results of these procedures. Many patients are still young at the time of reoperation, so very long-term comparisons with alternative therapies are especially needed. The rapid development and release of new valve prostheses—both transcatheter and surgical—as well as novel biomaterials and surgical methods for valve reconstruction (such as the Ozaki neocuspidization procedure) may provide noninferior or superior alternatives to valve-sparing reoperations in the future. Ex vivo biomechanical studies comparing valve repair techniques may add a scientific foundation to operations.22Paulsen M.J. Imbrie-Moore A.M. Baiocchi M. Wang H. Hironaka C.E. Lucian H.J. et al.Comprehensive ex vivo comparison of 5 clinically used conduit configurations for valve-sparing aortic root replacement using a 3-dimensional-printed heart simulator.Circulation. 2020; 142: 1361-1373Crossref PubMed Scopus (2) Google Scholar Extension of these studies toward understanding the performance of the pulmonary autograft after the many variations of valve-sparing reoperations is of particular interest. Ultimately, surgeons will have an ever-broadening array of therapies with which to tailor the treatment of autograft valve or root disease to each individual patient. The authors reported no conflicts of interest. The Journal policy requires editors and reviewers to disclose conflicts of interest and to decline handling or reviewing manuscripts for which they may have a conflict of interest. The editors and reviewers of this article have no conflicts of interest." @default.
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- W3132500658 date "2021-02-01" @default.
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