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Kumar P, Bhatia M, Arora N. Computed Tomographic Evaluation of Congenital Left Ventricular Outflow Obstruction. Curr Cardiol Rev 2023; 19:31-49. [PMID: 37231752 PMCID: PMC10636799 DOI: 10.2174/1573403x19666230525144602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 04/04/2023] [Accepted: 04/17/2023] [Indexed: 05/27/2023] Open
Abstract
Congenital left ventricular outflow obstruction represents a multilevel obstruction with several morphological forms. It can involve the subvalvular, valvar, or supravalvular portion of the aortic valve complex, and may coexist. Computed tomography (CT) plays an important supplementary role in the evaluation of patients with congenital LVOT obstruction. Unlike transthoracic echocardiography and cardiovascular magnetic resonance (CMR) imaging, it is not bounded by a small acoustic window, needs for anaesthesia or sedation, and metallic devices. Current generations of CT scanners with excellent spatial and temporal resolution, high pitch scanning, wide detector system, dose reduction algorithms, and advanced 3-dimensional postprocessing techniques provide a high-quality alternative to CMR or diagnostic cardiac catheterization. Radiologists performing CT in young children should be familiar with the advantages and disadvantages of CT and with the typical morphological imaging features of congenital left ventricular outflow obstruction.
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Affiliation(s)
- Parveen Kumar
- Department of Radiodiagnosis & Imaging, Fortis Escort Heart Institute, New Delhi, India
| | - Mona Bhatia
- Department of Radiodiagnosis & Imaging, Fortis Escort Heart Institute, New Delhi, India
- Convener, Cardiac Imaging, Cardiological Society of India, Kolkata, 700054, India
| | - Natisha Arora
- Department of Radiodiagnosis & Imaging, Fortis Escort Heart Institute, New Delhi, India
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2
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Abstract
OBJECTIVE The aim of this study is to evaluate clinical and surgical outcomes of children with subaortic stenosis, to determine the risk factors for surgery and reoperation and to compare isolated subaortic stenosis and those concomitant with CHDs. METHODS The study involved 80 children with subaortic stenosis. The patients were first classified as isolated and CHD group, and the isolated group was further classified as membranous/fibromuscular group. The initial, pre-operative, post-operative and the most recent echocardiographic data, demographic properties and follow-up results of the groups were analysed and compared. The correlation of echocardiographic parameters with surgery and reoperation was evaluated. RESULTS There was a significant male predominance in all groups. The frequency of the membranous type was higher than the fibromuscular type in the whole and the CHD group. The median time to the first operation was 4.6 years. Thirty-five (43.7%) patients underwent surgery, 5 of 35 (14%) patients required reoperation. The rate of surgery was similar between groups, but reoperation was significantly higher in the isolated group. The gradient was the most important factor for surgery and reoperation in both groups. In the isolated group besides gradient, mitral-aortic separation was the only echocardiographic parameter correlated with surgery and reoperation. CONCLUSION Reoperation is higher in isolated subaortic stenosis but similar in membranous and fibromuscular types. Early surgery may be beneficial in preventing aortic insufficiency but does not affect the rate of reoperation. Higher initial gradients are associated with adverse outcomes, recurrence and reoperation.
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Cao Y, Yang S, Li W, Li L, Su J, Fan X. Surgical repair of subaortic stenosis resection: 10 years of single-center experience in 65 patients. J Card Surg 2021; 36:3593-3598. [PMID: 34339531 DOI: 10.1111/jocs.15886] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 06/26/2021] [Accepted: 07/21/2021] [Indexed: 11/29/2022]
Abstract
BACKGROUND Subaortic stenosis (SAS) was a rare congenital heart disease of left ventricular outflow tract (LVOT), ranging from "isolated" lesions to "tunnel" or "diffuse" lesions. We conducted a retrospective study to describe the characteristics of patients with different lesions and analyze the risk factors for reoperation. METHODS In this study, we examined a single-center retrospective cohort of SAS patients undergoing resection from 2010 to 2019. Patients were classified as simple lesion group (n = 37) or complex lesion group (n = 28). Demographics, perioperative findings, and clinical data were analyzed. RESULTS The surgical effect of the two groups was significantly lower than that before the operation (p < .05). The median age at operation was 6 (3-11.8) years. There was no operative mortality. In complex lesion group, cardiopulmonary bypass time (CPB time), aortic cross-clamping time (ACC time), mechanical ventilation time, and intensive care unit (ICU) stay time were longer. The median follow-up period was 2.8 years (range: 1-3.8), with two late death. Six patients (9.2%) required reoperation due to restenosis or severe aortic insufficiency. The freedom from reoperation rates at 5 years was 66.7% for simple lesion but only 52.3% for complex lesion (p = .036). CONCLUSIONS Although the lesions include many forms, SAS resection was still satisfactory. However, the reoperation after initial surgical treatment was not infrequent, especially in patients with complex lesion.
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Affiliation(s)
- Yuefeng Cao
- Department of Pediatric Cardiac Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Shuang Yang
- Department of Pediatric Cardiac Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Wenxiu Li
- Department of Pediatric Cardiac Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Lei Li
- Department of Pediatric Cardiac Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Junwu Su
- Department of Pediatric Cardiac Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xiangming Fan
- Department of Pediatric Cardiac Center, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
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Raucher Sternfeld A, Betzer T, Tamir A, Mizrachi Y, Assa S, Bar J, Gindes L. Can Fetal Echocardiographic Measurements of the Left Ventricular Outflow Tract Angle Detect Fetuses with Conotruncal Cardiac Anomalies? Diagnostics (Basel) 2021; 11:1185. [PMID: 34209961 PMCID: PMC8303209 DOI: 10.3390/diagnostics11071185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVES The angle between the inter-ventricular septum and the ascending aorta can be measured during a sonographic fetal survey while viewing the left ventricular outflow tract (LVOT angle). Our aim was to compare the LVOT angle between fetuses with and without conotruncal cardiac anomaliesrmations. METHODS In this prospective observational study, we compared the LVOT angle between normal fetuses, at different gestational age, and fetuses with cardiac malformations. RESULTS The study included 302 fetuses screened at gestational age of 12-39 weeks. The LVOT angle ranged from 127 to 163 degrees (mean 148.2), in 293 fetuses with normal hearts, and was not correlated with gestational age. The LVOT angle was significantly wider in fetuses with D-transposition of the great arteries (D-TGA, eight fetuses) and valvar aortic stenosis (AS, three fetuses), than in fetuses with normal hearts (164.8 ± 5.0 vs. 148.2 ± 5.4, respectively, p < 0.001). Conversely, the LVOT angle was significantly narrower in fetuses with complete atrioventricular canal defect (AVC, eight fetuses), than in fetuses with normal hearts (124.8 ± 2.4 vs. 148.2 ± 5.4, respectively, p < 0.001). On ROC analysis, an angle of 159.6 degrees or higher had a sensitivity of 100% and a specificity of 97.3% for the detection of TGA or AS, whereas an angle of 128.8 degrees or lower had a sensitivity of 100% and a specificity of 99.7% for the detection of AVC defect. CONCLUSIONS The LVOT angle is constant during pregnancy, and differs significantly in fetuses with TGA/AS, and AVC, compared to fetuses with normal hearts (wider and narrower, respectively).
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Affiliation(s)
- Alona Raucher Sternfeld
- Pediatric Cardiology Unit, Department of Pediatrics, Wolfson Medical Center, Holon 5822012, Israel; (A.R.S.); (A.T.); (S.A.)
- Pediatric Cardiology Clinic, Maccabi Health Services, Rishon-Lezion 7565016, Israel
| | - Tal Betzer
- Department of Obstetrics and Gynecology, Wolfson Medical Center, Holon 5822012, Israel; (T.B.); (Y.M.); (J.B.)
| | - Akiva Tamir
- Pediatric Cardiology Unit, Department of Pediatrics, Wolfson Medical Center, Holon 5822012, Israel; (A.R.S.); (A.T.); (S.A.)
- Pediatric Cardiology Clinic, Maccabi Health Services, Rishon-Lezion 7565016, Israel
| | - Yossi Mizrachi
- Department of Obstetrics and Gynecology, Wolfson Medical Center, Holon 5822012, Israel; (T.B.); (Y.M.); (J.B.)
- Sackler School of Medicine, Tel Aviv University, Tel-Aviv 69978, Israel
| | - Sagie Assa
- Pediatric Cardiology Unit, Department of Pediatrics, Wolfson Medical Center, Holon 5822012, Israel; (A.R.S.); (A.T.); (S.A.)
- Pediatric Cardiology Clinic, Maccabi Health Services, Rishon-Lezion 7565016, Israel
| | - Jacob Bar
- Department of Obstetrics and Gynecology, Wolfson Medical Center, Holon 5822012, Israel; (T.B.); (Y.M.); (J.B.)
- Sackler School of Medicine, Tel Aviv University, Tel-Aviv 69978, Israel
| | - Liat Gindes
- Department of Obstetrics and Gynecology, Wolfson Medical Center, Holon 5822012, Israel; (T.B.); (Y.M.); (J.B.)
- Sackler School of Medicine, Tel Aviv University, Tel-Aviv 69978, Israel
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Saef JM, Ghobrial J. Valvular heart disease in congenital heart disease: a narrative review. Cardiovasc Diagn Ther 2021; 11:818-839. [PMID: 34295708 DOI: 10.21037/cdt-19-693-b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Accepted: 01/29/2021] [Indexed: 12/29/2022]
Abstract
Patients with congenital heart disease (CHD) are one of the fastest growing populations in cardiology, and valvular pathology is at the center of many congenital lesions. Derangements in valvular embryology lead to several anomalies prone to dysfunction, each with hemodynamic effects that require appropriate surveillance and management. Surgical innovation has provided new treatments that have improved survival in this population, though has also contributed to esotericism in patients who already have unique anatomic and physiologic considerations. Conduit and prosthesis durability are often monitored collaboratively with general and specialized congenital-focused cardiologists. As such, general cardiologists must become familiar with valvular disease with CHD for appropriate care and referral practices. In this review, we summarize the embryology of the semilunar and atrioventricular (AV) valves as a foundation for understanding the origins of valvular CHD and describe the mechanisms that account for heterogeneity in disease. We then highlight the categories of pathology from the simple (e.g., bicuspid aortic valve, isolated pulmonic stenosis) to the more complex (e.g., Ebstein's anomaly, AV valvular disease in single ventricle circulations) with details on natural history, diagnosis, and contemporary therapeutic approaches. Care for CHD patients requires collaborative effort between providers, both CHD-specialized and not, to achieve optimal patient outcomes.
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Affiliation(s)
- Joshua M Saef
- Division of Cardiology, Heart and Vascular Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
| | - Joanna Ghobrial
- Division of Cardiology, Heart and Vascular Institute, Cleveland Clinic Foundation, Cleveland, OH, USA
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Theocharis P, Viola N, Papamichael ND, Kaarne M, Bharucha T. Echocardiographic predictors of reoperation for subaortic stenosis in children and adults. Eur J Cardiothorac Surg 2019; 56:549-556. [PMID: 30805587 DOI: 10.1093/ejcts/ezz046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Revised: 01/19/2019] [Accepted: 01/30/2019] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVES Subaortic stenosis (SAS) can present as various types of obstruction of the left ventricular outflow tract (LVOT) below the level of the aortic valve. Even though corrective surgery has been identified as the most effective treatment, SAS more frequently reoccurs requiring reoperation in a significant proportion of the patients. Previous studies have focused on predictors of recurrence in various subgroups of patients with SAS, but rarely in the overall population of patients with SAS. The aim of this study was to determine the predictors of recurrence of SAS after initial corrective surgery. METHODS Patients from the database of the Congenital Cardiology Department of the University Hospital of Southampton with significant SAS requiring corrective surgery were included in the study. Data retrieved were obtained and used to determine the predictors of SAS recurrence after the initial corrective surgery. RESULTS Eighty-two patients (paediatric, n = 72 and adult, n = 10) who underwent initial successful resection were included in the analysis. Thirty patients required reoperation for recurrent SAS. These were significantly younger (median age 3.0 vs 6.7 years, P = 0.002). The recurrence of SAS was more common in patients with an interrupted aortic arch (23.3% vs 3.8%, P = 0.010) and unfavourable left ventricle geometry (43.3% vs 7.6%, P < 0.001), with steeper aortoseptal angle (131.0° ± 8.7° vs 136.1° ± 8.6°, P = 0.030), shorter distance between the point of obstruction of the LVOT and the aortic valve annulus in systole and diastole (median 4.30 vs 5.90 mm, P = 0.003 and 3.65 vs 4.95 mm, P = 0.006, respectively) and in those who had higher residual peak and mean LVOT gradients postoperatively (29.3 ± 16.0 vs 19.8 ± 10.7 mmHg, P = 0.006 and 15.9 ± 8.3 vs 10.1 ± 5.8 mmHg, P = 0.002, respectively). Overall, the presence of an interrupted aortic arch [odds ratio (OR) 10.34, 95% confidence interval (CI) 1.46-73.25; P < 0.019] and unfavourable left ventricle geometry (OR 10.42, 95% CI 1.86-58.39; P < 0.008) could independently predict reoperation for SAS after initial successful resection. CONCLUSIONS Patients who have initial corrective surgery for SAS at a younger age, unfavourable left ventricle geometry, an interrupted aortic arch and higher early postoperative LVOT gradients are more likely to have recurrent SAS requiring reoperation.
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Affiliation(s)
- Paraskevi Theocharis
- Department of Paediatric Cardiology, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Nicola Viola
- Department of Congenital Cardiac Surgery, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | | | - Markku Kaarne
- Department of Congenital Cardiac Surgery, University Hospital Southampton NHS Foundation Trust, Southampton, UK
| | - Tara Bharucha
- Department of Paediatric Cardiology, University Hospital Southampton NHS Foundation Trust, Southampton, UK
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Abstract
PURPOSE OF REVIEW Distinction between discrete subvalvar aortic stenosis and other causes of left ventricular outflow obstruction has important implications for predicting natural history and guiding the timing and type of intervention. Imaging, primarily transthoracic echocardiography (TTE), plays a pivotal role in the diagnosis and management of adults with subvalvar aortic stenosis. RECENT FINDINGS Most systematic research on imaging of subvalvar aortic stenosis has focused on echocardiography. TTE, especially two-dimensional imaging with color and spectral Doppler, remains the main modality for delineation of the anatomic and hemodynamic features of subvalvar stenosis, associated anomalies and involvement of accessory mitral valve attachments to the subaortic septum or abnormally placed papillary muscles. Transesophageal echocardiography may provide more detailed definition of left ventricular outflow tract anatomy, including the presence and extension of the obstructive subaortic fibroelastic tissue onto the aortic or mitral valve, especially in patients with poor transthoracic windows. The clinical role for advanced imaging technologies, including three-dimensional echocardiography, cardiac magnetic resonance and computed tomography, is evolving but, largely because of the adequacy of established imaging with TTE, remains relatively limited. SUMMARY In the absence of other congenital heart defects or alternative indications (e.g. coronary angiography), TTE is usually adequate for the assessment of discrete subvalvar aortic stenosis in the adult. In specific clinical situations, supplemental imaging modalities can play an integral role in clinical decision making.
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8
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Nawaytou HM, Mercer-Rosa L, Channing A, Cohen MS. Intraoperative transesophageal echocardiographic predictors of recurrent left ventricular outflow tract obstruction in children undergoing subaortic stenosis resection. Echocardiography 2018; 35:678-684. [PMID: 29437237 DOI: 10.1111/echo.13827] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Intraoperative transesophageal echocardiography (iTEE) is used to assess for residual left ventricular outflow tract obstruction (LVOTO) after surgical resection of subaortic membrane causing subaortic stenosis (sub-AS). We aimed to identify the iTEE features associated with recurrence of LVOTO. METHODS We conducted a retrospective study of children undergoing sub-AS resection from June 2006 to June 2014. Doppler assessment of the flow velocity and the anatomical features of the left ventricular outflow tract were analyzed from stored echocardiograms. Recurrent LVOTO was defined as an increase in the mean pressure gradient across the left ventricular outflow tract of > 15 mm Hg on the most recent follow-up echocardiogram from the mean pressure gradient on the predischarge echocardiogram or as doubling of the mean pressure gradient to a value ≥20 mm Hg. RESULTS Thirty-five patients were included, with median age at surgery was 8.1 years (range: 0.7-29 years) and median follow-up was 47 months (2-91 months). Ten patients (29%) had recurrent LVOTO, which was associated with a shorter distance between the narrowest diameter of the outflow tract and the aortic valve on iTEE [median 0.59 cm (range 0.39-0.74) vs 0.98 cm (0.75-1.5), P = .03]. No patients with more than mild residual LVOTO on iTEE regressed to mild or no LVOTO on follow-up echocardiograms. CONCLUSIONS LVOTO recurrence after sub-AS resection is common, and residual LVOTO remains the same or increases over time. Proximity of the LVOTO to the aortic valve is a risk factor for recurrent LVOTO. These findings may be useful in counseling patients and to guide the frequency of postoperative follow-up.
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Affiliation(s)
- Hythem M Nawaytou
- Department of Pediatrics, Division of Cardiology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Laura Mercer-Rosa
- Department of Pediatrics, Division of Cardiology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Alexandra Channing
- Department of Pediatrics, Division of Cardiology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Meryl S Cohen
- Department of Pediatrics, Division of Cardiology, The Children's Hospital of Philadelphia, Philadelphia, PA, USA
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9
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Talwar S, Anand A, Gupta SK, Ramakrishnan S, Kothari SS, Saxena A, Juneja R, Choudhary SK, Airan B. Resection of subaortic membrane for discrete subaortic stenosis. J Card Surg 2017; 32:430-435. [DOI: 10.1111/jocs.13160] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Sachin Talwar
- Cardiothoracic Center; All India Institute of Medical Sciences; New Delhi India
| | - Abhishek Anand
- Cardiothoracic Center; All India Institute of Medical Sciences; New Delhi India
| | - Saurabh Kumar Gupta
- Cardiothoracic Center; All India Institute of Medical Sciences; New Delhi India
| | | | | | - Anita Saxena
- Cardiothoracic Center; All India Institute of Medical Sciences; New Delhi India
| | - Rajnish Juneja
- Cardiothoracic Center; All India Institute of Medical Sciences; New Delhi India
| | | | - Balram Airan
- Cardiothoracic Center; All India Institute of Medical Sciences; New Delhi India
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10
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Jashari H, Lannering K, Mellander M, Ibrahimi P, Rydberg A, Henein MY. Coarctation repair normalizes left ventricular function and aorto-septal angle in neonates. CONGENIT HEART DIS 2016; 12:218-225. [DOI: 10.1111/chd.12430] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2016] [Revised: 09/06/2016] [Accepted: 10/21/2016] [Indexed: 11/27/2022]
Affiliation(s)
- Haki Jashari
- Department of Public Health and Clinical Medicine; Umeå University; Umeå Sweden
| | - Katarina Lannering
- Department of Pediatric Cardiology; Queen Silvia Children's Hospital, Sahlgrenska University Hospital; Göteborg Sweden
| | - Mats Mellander
- Department of Pediatric Cardiology; Queen Silvia Children's Hospital, Sahlgrenska University Hospital; Göteborg Sweden
| | - Pranvera Ibrahimi
- Department of Public Health and Clinical Medicine; Umeå University; Umeå Sweden
| | - Annika Rydberg
- Department of Clinical Sciences; Umeå University; Umeå Sweden
| | - Michael Y. Henein
- Department of Public Health and Clinical Medicine; Umeå University; Umeå Sweden
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Abarbanell GL, Morrow G, Kelleman MS, Kanter KR, Border WL, Sachdeva R. Echocardiographic Predictors of Left Ventricular Outflow Tract Obstruction following Repair of Atrioventricular Septal Defect. CONGENIT HEART DIS 2016; 11:554-561. [DOI: 10.1111/chd.12370] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Revised: 03/08/2016] [Accepted: 03/18/2016] [Indexed: 11/26/2022]
Affiliation(s)
- Ginnie L. Abarbanell
- Division of Pediatric Cardiology, Department of Pediatrics; Emory University School of Medicine, Children's Healthcare of Atlanta and Sibley Heart Center Cardiology; Atlanta Ga USA
| | - Gemma Morrow
- Division of Pediatric Cardiology, Department of Pediatrics; Emory University School of Medicine, Children's Healthcare of Atlanta and Sibley Heart Center Cardiology; Atlanta Ga USA
| | - Michael S. Kelleman
- Division of Pediatric Cardiology, Department of Pediatrics; Emory University School of Medicine, Children's Healthcare of Atlanta and Sibley Heart Center Cardiology; Atlanta Ga USA
| | - Kirk R. Kanter
- Division of Pediatric Cardiology, Department of Pediatrics; Emory University School of Medicine, Children's Healthcare of Atlanta and Sibley Heart Center Cardiology; Atlanta Ga USA
| | - William L. Border
- Division of Pediatric Cardiology, Department of Pediatrics; Emory University School of Medicine, Children's Healthcare of Atlanta and Sibley Heart Center Cardiology; Atlanta Ga USA
| | - Ritu Sachdeva
- Division of Pediatric Cardiology, Department of Pediatrics; Emory University School of Medicine, Children's Healthcare of Atlanta and Sibley Heart Center Cardiology; Atlanta Ga USA
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12
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Cho EJ, Kim SM, Park SJ, Lee SC, Park SW. Identification of Factors that Predict whether the Right Parasternal View Is Required for Accurate Evaluation of Aortic Stenosis Severity. Echocardiography 2016; 33:830-7. [DOI: 10.1111/echo.13181] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Affiliation(s)
- Eun Jeong Cho
- Cardiology Clinic; National Cancer Center; Gyeonggi-do Korea
| | - Sung-Mok Kim
- Cardiovascular Imaging Center; Heart Vascular Stroke Institute; Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul Korea
| | - Sung-Ji Park
- Cardiovascular Imaging Center; Heart Vascular Stroke Institute; Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul Korea
| | - Sang-Chol Lee
- Cardiovascular Imaging Center; Heart Vascular Stroke Institute; Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul Korea
| | - Seung Woo Park
- Cardiovascular Imaging Center; Heart Vascular Stroke Institute; Samsung Medical Center; Sungkyunkwan University School of Medicine; Seoul Korea
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13
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Thaden JJ, Nkomo VT, Lee KJ, Oh JK. Doppler Imaging in Aortic Stenosis: The Importance of the Nonapical Imaging Windows to Determine Severity in a Contemporary Cohort. J Am Soc Echocardiogr 2015; 28:780-5. [PMID: 25857547 DOI: 10.1016/j.echo.2015.02.016] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2014] [Indexed: 10/23/2022]
Abstract
BACKGROUND Although the highest aortic valve velocity was thought to be obtained from imaging windows other than the apex in about 20% of patients with severe aortic stenosis (AS), its occurrence appears to be increasing as the age of patients has increased with the application of transcatheter aortic valve replacement. The aim of this study was to determine the frequency with which the highest peak jet velocity (Vmax) is found at each imaging window, the degree to which neglecting nonapical imaging windows underestimates AS severity, and factors influencing the location of the optimal imaging window in contemporary patients. METHODS Echocardiograms obtained in 100 consecutive patients with severe AS from January 3 to May 23, 2012, in which all imaging windows were interrogated, were retrospectively analyzed. AS severity (aortic valve area and mean gradient) was calculated on the basis of the apical imaging window alone and the imaging window with the highest peak jet velocity. The left ventricular-aortic root angle measured in the parasternal long-axis view as well as clinical variables were correlated with the location of highest peak jet velocity. RESULTS Vmax was most frequently obtained in the right parasternal window (50%), followed by the apex (39%). Subjects with acute angulation more commonly had Vmax at the right parasternal window (65% vs 43%, P = .05) and less commonly had Vmax at the apical window (19% vs 48%, P = .005), but Vmax was still located outside the apical imaging window in 52% of patients with obtuse aortic root angles. If nonapical windows were neglected, 8% of patients (eight of 100) were misclassified from high-gradient severe AS to low-gradient severe AS, and another 15% (15 of 100) with severe AS (aortic valve area < 1.0 cm(2)) were misclassified as having moderate AS (aortic valve area > 1.0 cm(2)). CONCLUSIONS In this contemporary cohort, Vmax was located outside the apical imaging window in 61% of patients, and neglecting the nonapical imaging windows resulted in the misclassification of AS severity in 23% of patients. Aortic root angulation as measured by two-dimensional echocardiography influences the location of Vmax modestly. Despite increasing time constraints on many echocardiography laboratories, these data confirm that routine Doppler interrogation from multiple imaging windows is critical to accurately determine the severity of AS in contemporary clinical practice.
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Affiliation(s)
- Jeremy J Thaden
- Division of Cardiovascular Disease, Mayo Clinic, Rochester, Minnesota
| | - Vuyisile T Nkomo
- Division of Cardiovascular Disease, Mayo Clinic, Rochester, Minnesota
| | - Kwang Je Lee
- Division of Cardiovascular Disease, Mayo Clinic, Rochester, Minnesota; Division of Cardiology, Department of Internal Medicine, Chung-Ang University Hospital, Seoul, Korea
| | - Jae K Oh
- Division of Cardiovascular Disease, Mayo Clinic, Rochester, Minnesota.
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14
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Critoph CH, Pantazis A, Tome Esteban MT, Salazar-Mendiguchía J, Pagourelias ED, Moon JC, Elliott PM. The influence of aortoseptal angulation on provocable left ventricular outflow tract obstruction in hypertrophic cardiomyopathy. Open Heart 2014; 1:e000176. [PMID: 25371813 PMCID: PMC4216933 DOI: 10.1136/openhrt-2014-000176] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2014] [Revised: 08/27/2014] [Accepted: 10/01/2014] [Indexed: 02/06/2023] Open
Abstract
Objectives Aortoseptal angulation (AoSA) can predict provocable left ventricular outflow tract obstruction (LVOTO) in patients with symptomatic hypertrophic cardiomyopathy (HCM). Lack of a standardised measurement technique in HCM without the need for complex three-dimensional (3D) imaging limits its usefulness in routine clinical practice. This study aimed to validate a simple measurement of AoSA using 2D echocardiography and cardiac MR (CMR) imaging as a predictor of LVOTO. Methods We retrospectively assessed 160 patients with non-obstructive HCM, referred for exercise stress echocardiography. AoSA was measured using resting 2D echocardiography in all patients, and CMR in 29. Twenty-five controls with normal echocardiograms were used for comparison. Results Patients with HCM had a reduced AoSA compared with controls (113°±12 vs 126°±6), p<0.0001. Sixty (38%) patients had provocable LVOTO, with smaller angles than non-obstructive patients (108°±12 vs 116°±12, p<0.0001). AoSA, degree of mitral valvular regurgitation and incomplete systolic anterior motion (SAM) were associated with peak left ventricular outflow tract gradient (r=0.508, p<0.0001). An angle ≤100° had 27% sensitivity, 91% specificity and 59% positive predictive value for predicting provocable LVOTO. When combined with SAM, specificity was 99% and positive predictive value 88%. Intraclass correlation coefficient of AoSA measured by two observers was 0.901 (p<0.0001). Bland-Altman analysis of echocardiographic AoSA showed good agreement with the CMR-derived angle. Conclusions Measurement of AoSA using echocardiography in HCM is easy, reproducible and comparable to CMR. Patients with provocable LVOTO have reduced angles compared with non-obstructive patients. AoSA is highly specific for provocable LVOTO and should prompt further evaluation in symptomatic patients without resting obstruction.
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Affiliation(s)
- Christopher Howell Critoph
- Department of Inherited Cardiovascular Disease , The Heart Hospital, University College London , London , UK
| | - Antonios Pantazis
- Department of Inherited Cardiovascular Disease , The Heart Hospital, University College London , London , UK
| | - Maria Teresa Tome Esteban
- Department of Inherited Cardiovascular Disease , The Heart Hospital, University College London , London , UK
| | - Joel Salazar-Mendiguchía
- Cardiomyopathies, Advanced Heart Failure and Transplant Unit , Hospital Universitari de Bellvitge , Barcelona , Spain
| | - Efstathios D Pagourelias
- Department of Inherited Cardiovascular Disease , The Heart Hospital, University College London , London , UK
| | - James C Moon
- Department of Inherited Cardiovascular Disease , The Heart Hospital, University College London , London , UK
| | - Perry Mark Elliott
- Department of Inherited Cardiovascular Disease , The Heart Hospital, University College London , London , UK
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Barboza LA, Garcia FDM, Barnoya J, Leon-Wyss JR, Castañeda AR. Subaortic membrane and aorto-septal angle: an echocardiographic assessment and surgical outcome. World J Pediatr Congenit Heart Surg 2014; 4:253-61. [PMID: 24327492 DOI: 10.1177/2150135113485760] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Development of a subaortic membrane is not fully understood. Recurrence after surgical removal continues to be high. We sought to assess the differences in aorto-septal angles (AoSA) to possibly explain alterations within the left ventricular outflow tract, hence in subaortic membrane formation. METHODS A total of 113 patients who underwent subaortic membrane resection were matched by age and sex with 113 controls. The subaortic membrane resection group included isolated subaortic membranes (n = 34, group I), associated with ventricular septal defect (n = 29, group II), or patent ductus arteriosus (n = 50, group III). RESULTS Mean (± standard deviation) AoSA (in degrees) were not different between subaortic membrane groups I, II, and III but were steeper than their control groups (126.2 ± 9.2 vs 138.6 ± 7.0, 129.2 ± 9.9 vs 137.7 ± 10.0, and 126.2 ± 8.1 vs 135 ± 8.5, respectively; all Ps < .05). Additionally, group II had lower preoperative gradients (28.8 ± 20.7 mm Hg) compared to groups I and III (67.0 ± 32.9 and 66.2 ± 33.1 mm Hg, respectively, P < .001). Follow-up ranged from 3 to 132 months. In 22 (32%) patients, a subaortic membrane recurred. Early postoperative residual gradients and development of aortic regurgutation were associated with the need for reoperation (P < .05). CONCLUSIONS These findings suggest a contributing role of the AoSA in the development of subaortic membrane. Further rheological experiments are warranted. Whether the steeper the angle the higher the risk of recurrence may be revealed by longer follow-up periods.
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Affiliation(s)
- Laura A Barboza
- Department of Pediatric Cardiac Surgery, Unidad de Cirugía Cardiovascular de Guatemala-UNICAR, Guatemala City, Guatemala
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16
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Dorobantu DM, Sharabiani MT, Martin RP, Angelini GD, Parry AJ, Caputo M, Stoica SC. Surgery for simple and complex subaortic stenosis in children and young adults: results from a prospective, procedure-based national database. J Thorac Cardiovasc Surg 2014; 148:2618-26. [PMID: 25156466 DOI: 10.1016/j.jtcvs.2014.06.091] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2014] [Revised: 05/26/2014] [Accepted: 06/27/2014] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To identify the outcomes of surgically treated subaortic stenosis in a national population. METHODS From 2000 to 2013, 1047 patients aged < 40 years underwent 1142 subaortic stenosis procedures. Of the 1047 patients, 484 (46.2%) were considered to have complex stenosis (CS) because at or before the first operation they had mitral valve (MV) disease, aortic valve disease, aortic coarctation or an interrupted aortic arch. RESULTS The 30-day mortality was 0.7% for simple stenosis (SS), 2.3% for CS (P = .06), and 1.6% overall. Age < 1 year (P < .01), MV procedure (P = .02) and an interrupted aortic arch at the index procedure (P < .01) were risk factors for early death. Konno-type procedure early mortality was 2.4%. The 12-year survival was 97.1%, with a significant difference between SS and CS (hazard ratio [HR], 4.53; P = .02). Having MV disease alone (HR, 4.11; P = .02), MV disease plus aortic coarctation (HR, 6.73; P = .008), and age < 1 year (HR, 6.72; P < .001) were risk factors for late mortality. Freedom from subaortic reintervention overall was 92.3% and 88.5% at 5 and 12 years, respectively, much greater with CS than with SS (HR, 4.91; P < .0001). The independent risk factors for reintervention were younger age at the index procedure (HR, 0.1/y; P = .002), concomitant MV procedure (HR, 2.68; P = .019), ventricular septal defect plus interrupted aortic arch (HR, 3.19; P = .014), and ventricular septal defect plus aortic coarctation (HR, 2.41; P = .023). Undergoing a concomitant aortic valve procedure at the index procedure was protective (HR, 0.29; P = .025). CONCLUSIONS Patients with SS had excellent outcomes. However, those with CS had worse long-term survival and freedom from reintervention, with morbidity and mortality greatest in young patients with multiple lesions. Additional evaluation in large-scale prospective studies is warranted.
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Affiliation(s)
- Dan M Dorobantu
- University Hospitals Bristol National Health Services Trust, Bristol, United Kingdom
| | | | - Robin P Martin
- University Hospitals Bristol National Health Services Trust, Bristol, United Kingdom
| | - Gianni D Angelini
- University Hospitals Bristol National Health Services Trust, Bristol, United Kingdom; Imperial College, London, United Kingdom
| | - Andrew J Parry
- University Hospitals Bristol National Health Services Trust, Bristol, United Kingdom
| | - Massimo Caputo
- University Hospitals Bristol National Health Services Trust, Bristol, United Kingdom; Rush University Medical Center, Chicago, Ill
| | - Serban C Stoica
- University Hospitals Bristol National Health Services Trust, Bristol, United Kingdom.
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17
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Ezon DS. Fixed subaortic stenosis: a clinical dilemma for clinicians and patients. CONGENIT HEART DIS 2013; 8:450-6. [PMID: 23947905 DOI: 10.1111/chd.12127] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 07/04/2013] [Indexed: 11/29/2022]
Abstract
Subaortic stenosis carries considerable morbidity and mortality. In most cases, patients have an underlying left ventricular outflow tract morphology that promotes turbulence at the outflow tract, which induces the development of subaortic fibromuscular tissue. A subset of patients will progress to develop severe stenosis and aortic regurgitation, but it has been difficult to determine which patients are at risk. While resection of the subaortic tissue improves immediate outcome, many patients have recurrence of both stenosis and regurgitation, questioning the efficacy of surgical intervention in asymptomatic patients. This review article describes the current understanding of the etiology, treatment, and prognosis of subaortic stenosis.
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Affiliation(s)
- David S Ezon
- Section of Pediatric Cardiology, Baylor College of Medicine, Texas Children's Hospital, Houston, Tex, USA
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18
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Kanemitsu S, Yamamoto K, Shimono T, Shimpo H. Discrete subaortic stenosis 37 years after repair of a ventricular septal defect. Interact Cardiovasc Thorac Surg 2012; 14:683-5. [PMID: 22286601 DOI: 10.1093/icvts/ivr062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Discrete subaortic stenosis (DSS) is uncommon in adults after surgical correction of congenital heart defects. There are only a few published reports on the occurrence of DSS in adults. We present an adult case with DSS after repair of a ventricular septal defect (VSD). The case was a 44-year old female patient who underwent VSD closure at 7 years of age. Thirty-seven years later, she presented with congestive heart failure associated with severe subaortic membranous stenosis and atrial fibrillation (AF) that required surgical repair. We report successful surgical treatment of this adult patient with DSS and AF 37 years after repair of a VSD.
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Affiliation(s)
- Shinji Kanemitsu
- Department of Thoracic and Cardiovascular Surgery, Mie University Graduate School of Medicine, Tsu, Japan.
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Abstract
An 80-year-old woman was referred for transcatheter aortic valve implantation for correction of aortic stenosis. An echocardiogram at the author's institution revealed severe hypertrophy of the left ventricle with deep recesses into the myocardium and hypokinesis involving the left ventricular apex. In addition, there was subaortic stenosis secondary to a muscular ridge. The aortic valve was only mildly stenotic. In this Cardiology Grand Rounds, the authors present a rare case of ventricular noncompaction and review the literature on this subject and its association with other cardiac abnormalities.
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20
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Griffiths LG. Surgery for Cardiac Disease in Small Animals: Current Techniques. Vet Clin North Am Small Anim Pract 2010; 40:605-22. [DOI: 10.1016/j.cvsm.2010.04.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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21
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Reply to the Editor. J Thorac Cardiovasc Surg 2007. [DOI: 10.1016/j.jtcvs.2007.03.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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22
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Sersar SI, Jamjoom AA, Baslaim GM. Fixed subaortic stenosis. J Thorac Cardiovasc Surg 2007; 134:817; author reply 817-8. [PMID: 17723850 DOI: 10.1016/j.jtcvs.2007.03.032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2007] [Accepted: 03/15/2007] [Indexed: 11/26/2022]
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23
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Stolzmann P, Scheffel H, Bettex D, Karlo C, Frauenfelder T, Prêtre R, Marincek B, Alkadhi H. Subvalvular aortic stenosis: comprehensive cardiac evaluation with dual-source computed tomography. J Thorac Cardiovasc Surg 2007; 134:240-1, 241.e1. [PMID: 17599520 DOI: 10.1016/j.jtcvs.2007.03.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2007] [Accepted: 03/08/2007] [Indexed: 11/22/2022]
Affiliation(s)
- Paul Stolzmann
- Institute of Diagnostic Radiology, University Hospital, Zurich, Switzerland
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