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Li H, Deng L, Liu H, Chen S, Rao C, Tang Y, Wang S, Liu S, Sun H, Song Y. Influence of operator volume on early outcomes of septal myectomy for isolated hypertrophic obstructive cardiomyopathy. J Thorac Dis 2021; 13:1090-1099. [PMID: 33717582 PMCID: PMC7947483 DOI: 10.21037/jtd-20-2070] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Background Guidelines on the diagnosis and management of hypertrophic cardiomyopathy (HCM) recommend that septal myectomy be performed by experienced operators. However, the impact of operator volume on surgical treatment outcomes for isolated HCM has been poorly investigated. Methods From 2002 to 2014, 435 consecutive patients with isolated HCM undergoing myectomy at the Fuwai Hospital were retrospectively enrolled. All 29 surgeons were divided into beginner surgeons (operator volume ≤20) and experienced surgeons (operator volume >20) according to the guidelines for the diagnosis and treatment of HCM. Propensity score matching of patients in the two groups was performed. Results Baseline differences included advanced New York Heart Association classification and older age in the experienced surgeon group. After matching, in the beginner surgeon group (107 cases), residual obstruction (18.7% vs. 0.9%, P<0.001) was more common, and the postoperative left ventricular outflow tract pressure gradient (20.7±15.1 vs. 14.3±7.4 mmHg, P<0.001) was higher than that of the experienced surgeon group. In the experienced surgeon group (107 cases), the incidence of mitral valve replacement (1.9% vs. 11.2%, P<0.001) and permanent pacemaker implantation (1.9% vs. 3.7%, P<0.001) was significantly lower than that in the beginner surgeon group. However, there was no difference in procedural mortality (1.9% vs. 1.9%) between the two groups. Conclusions Operator volume is an important factor in achieving better obstruction obliteration after septal myectomy in patients with isolated HCM.
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Affiliation(s)
- Haojie Li
- Department of Cardiovascular Surgery, Fuwai Hospital, National Centre for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Long Deng
- Department of Cardiovascular Surgery, Fuwai Hospital, National Centre for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hanning Liu
- Department of Cardiovascular Surgery, Fuwai Hospital, National Centre for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Sipeng Chen
- Department of Cardiovascular Surgery, Fuwai Hospital, National Centre for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Chenfei Rao
- Department of Cardiovascular Surgery, Fuwai Hospital, National Centre for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yajie Tang
- Department of Cardiovascular Surgery, Fuwai Hospital, National Centre for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shuiyun Wang
- Department of Cardiovascular Surgery, Fuwai Hospital, National Centre for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Sheng Liu
- Department of Cardiovascular Surgery, Fuwai Hospital, National Centre for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hansong Sun
- Department of Cardiovascular Surgery, Fuwai Hospital, National Centre for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yunhu Song
- Department of Cardiovascular Surgery, Fuwai Hospital, National Centre for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Moreno Garijo J, Amador Y, Fan CS, Silverton N, Ralph-Edwards A, Woo A, Mashari A, Meineri M. Association Between Three-Dimensional Left Ventricular Outflow Tract Area and Gradients After Myectomy in Hypertrophic Obstructive Cardiomyopathy. J Cardiothorac Vasc Anesth 2020; 35:1654-1662. [PMID: 33431273 DOI: 10.1053/j.jvca.2020.12.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 12/04/2020] [Accepted: 12/07/2020] [Indexed: 11/11/2022]
Abstract
OBJECTIVE Determine whether the intraoperative three-dimensional left ventricular outflow tract cross-sectional area may be inversely correlated with pressure gradients as a determinant of surgical success after septal myectomy in hypertrophic cardiomyopathy patients. DESIGN Perioperative data were obtained by retrospective review. SETTING Toronto General Hospital, University of Toronto, Toronto, Canada, a tertiary hospital. PARTICIPANTS The study comprised 67 patients with hypertrophic obstructive cardiomyopathy. INTERVENTIONS Transthoracic and intraoperative transesophageal echocardiographic assessment of pressure gradients. Transesophageal measurement of the three-dimensional left ventricular outflow tract cross-sectional area. MEASUREMENTS AND MAIN RESULTS The smallest left ventricular outflow tract area increased on average 1.883 cm2 (98.3%) after septal myectomy. There was a significant correlation between the increase in the area and the transesophageal pressure gradients (r = -0.32; p = 0.01) after myectomy, but none with postoperative transthoracic gradients at rest (r = -0.10; p = 0.42). Postoperative transesophageal and transthoracic gradients were significantly correlated (r = 0.26; p = 0.04). The best risk factors to predict high residual gradients were preoperative transesophageal gradient >97 mmHg, postoperative transesophageal area <3.16 cm2, and moderate or more residual transesophageal mitral regurgitation (specificity 89%, 81%, and 78%, respectively). CONCLUSIONS Three-dimensional left ventricular outflow tract area measurements with transesophageal echocardiography after myectomy correlated fairly well with postoperative transesophageal pressure gradients. Patients with residual transthoracic elevated gradients after surgery at follow-up had a smaller transesophageal area and higher transesophageal pressure gradients immediately after the procedure. However, transesophageal pressure gradients after myectomy correlated poorly with follow-up transthoracic gradients at rest.
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Affiliation(s)
- J Moreno Garijo
- Department of Anesthesia and Pain Management, Toronto General Hospital, Toronto, ON, Canada.
| | - Y Amador
- Department of Anesthesia and Pain Management, Toronto General Hospital, Toronto, ON, Canada
| | - C S Fan
- Department of Biostatistics, Toronto General Hospital, Toronto, ON, Canada
| | - N Silverton
- Department of Anesthesiology, University of Utah Health, Salt Lake City, UT
| | - A Ralph-Edwards
- Department of Cardiac Surgery, Toronto General Hospital, Toronto, ON, Canada
| | - A Woo
- Department of Cardiology, Toronto General Hospital, Toronto, ON, Canada
| | - A Mashari
- Department of Anesthesia and Pain Management, Toronto General Hospital, Toronto, ON, Canada
| | - M Meineri
- Department of Anesthesia and Pain Management, Toronto General Hospital, Toronto, ON, Canada
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Messmer BJ. Surgery for hypertrophic obstructive cardiomyopathy (HOCM): what to do with concomitant mitral insufficiency? J Thorac Dis 2017; 9:E381-E383. [PMID: 28523183 DOI: 10.21037/jtd.2017.03.127] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Geske JB, Klarich KW, Ommen SR, Schaff HV, Nishimura RA. Septal reduction therapies in hypertrophic cardiomyopathy: comparison of surgical septal myectomy and alcohol septal ablation. Interv Cardiol 2014. [DOI: 10.2217/ica.14.8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Wang S, Luo M, Sun H, Song Y, Yin C, Wang L, Hui R, Hu S. A retrospective clinical study of transaortic extended septal myectomy for obstructive hypertrophic cardiomyopathy in China. Eur J Cardiothorac Surg 2012; 43:534-40. [PMID: 22761504 PMCID: PMC3567831 DOI: 10.1093/ejcts/ezs332] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
OBJECTIVES The aim was to assess the early and mid-term clinical effects of transaortic extended septal myectomy (TAESM) on obstructive hypertrophic cardiomyopathy (HCM) in China. METHODS Ninety-three consecutive patients [57 men; mean age 45.8 ± 13.4 (11–74) years] with obstructive HCM underwent TAESM in Fuwai hospital. Their clinical data were analysed retrospectively. All the patients had drug-refractory symptoms and left ventricular outflow tract (LVOT) obstruction with a resting or physically provoked gradient of ≥50 mmHg. Preoperative transthoracic, intra-operative transoesophageal and postoperative transthoracic echocardiography was performed to assess LVOT gradients, septal thickness, LVOT diameter, mitral valve function, etc. Systolic anterior motion (SAM) of the anterior mitral valve leaflet had been detected in all preoperatively. RESULTS All the surgical procedures of the 93 patients were technically successful. The average length of postoperative stay was 7.8 ± 3.7 days. The 30-day and in-hospital mortality was 0%. Initial postoperative transoesophageal echocardiography (TEE) demonstrated marked reduction in LVOT gradient (91.76 ± 25.08 to 14.34 ± 13.44 mmHg, P < 0.0005) and significant improvement in mitral regurgitation (MR; P < 0.0005). Concomitant surgical procedures were carried out in 37 (39.8%). Complete atrioventricular block occurred in 3, complete left bundle branch block in 44, intraventricular conduction delay in 18, complete right bundle branch block in 2, transient renal dysfunction in 2 and transient intra-aortic-balloon-pumping was needed in 2. No other complications were observed during hospital stay. During a follow-up of 10.72 ± 11.02 (1–24) months, there were no readmissions or deaths, and all patients subjectively reported an obvious decrease in limiting symptoms and a significant increase in physical ability. At the latest follow-up, the New York Heart Association functional class decreased from 3.09 ± 0.60 (2–4) preoperatively to 1.12 ± 0.32 (1–2) (P < 0.0005); the LVOT gradient remained low at 14.78 ± 14.01 mmHg; MR remained absent (51) or at mild-(41)-to-moderate-(1) levels and SAM resolved completely in 98.9% (92 of 93) patients. CONCLUSIONS TAESM provides excellent relief from LVOT obstruction in HCM patients, with a conspicuous clinical and echocardiographic outcome at early and mid-term follow-up. For obstructive HCM and cardiac comorbidities, concomitant cardiac procedures with TAESM can be performed with low risk and satisfactory results.
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Affiliation(s)
- Shuiyun Wang
- Department of Cardiovascular Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Assessment of Left Ventricular Outflow Gradient. JACC Cardiovasc Interv 2012; 5:675-81. [DOI: 10.1016/j.jcin.2012.01.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2011] [Revised: 01/09/2012] [Accepted: 01/20/2012] [Indexed: 11/23/2022]
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Iacovoni A, Spirito P, Simon C, Iascone M, Di Dedda G, De Filippo P, Pentiricci S, Boni L, Senni M, Gavazzi A, Ferrazzi P. A contemporary European experience with surgical septal myectomy in hypertrophic cardiomyopathy. Eur Heart J 2012; 33:2080-7. [PMID: 22522842 PMCID: PMC3418509 DOI: 10.1093/eurheartj/ehs064] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Aims The recent American College of Cardiology and American Heart Association Guidelines on hypertrophic cardiomyopathy (HCM) have confirmed surgical myectomy as the gold standard for non-pharmacological treatment of obstructive HCM. However, during the last 15 years, an extensive use of alcohol septal ablation has led to the virtual extinction of myectomy programmes in several European countries. Therefore, many HCM candidates for myectomy in Europe cannot be offered the option of this procedure. The purpose of our study is to report the difficulties and results in developing a myectomy programme for HCM in a centre without previous experience with this procedure. Methods and results The clinical course is reported of 124 consecutive patients with obstructive HCM and heart failure symptoms who underwent myectomy at a single European centre between 1996 and 2010. The median follow-up was 20.3 months (inter-quartile range: 3.9–40.6 months). No patients were lost to follow-up. A cumulative incidence of HCM-related death after myectomy was 0.8, 3.3, and 11.2% at 1, 5, and 10 years, respectively, including one operative death (procedural mortality 0.8%). The left ventricular (LV) outflow gradient decreased from 95 ± 36 mmHg before surgery to 12 ± 6 mmHg at most recent evaluation (P < 0.001), with none of the patients having a significant residual LV outflow gradient. Of the 97 patients in New York Heart Association functional class III–IV before surgery, 93 (96%) were in class I–II at most recent evaluation (P < 0.001). Conclusion Our results show that the development of a myectomy programme at a centre without previous experience with this procedure is feasible and can lead to highly favourable clinical results.
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Affiliation(s)
- Attilio Iacovoni
- Dipartimento Cardiovascolare, Ospedali Riuniti, Bergamo 24128, Italy
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Geske JB, Sorajja P, Ommen SR, Nishimura RA. Variability of Left Ventricular Outflow Tract Gradient During Cardiac Catheterization in Patients With Hypertrophic Cardiomyopathy. JACC Cardiovasc Interv 2011; 4:704-9. [DOI: 10.1016/j.jcin.2011.02.014] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 02/02/2011] [Accepted: 02/18/2011] [Indexed: 11/25/2022]
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Kim DH, Handschumacher MD, Levine RA, Choi YS, Kim YJ, Yun SC, Song JM, Kang DH, Song JK. In vivo measurement of mitral leaflet surface area and subvalvular geometry in patients with asymmetrical septal hypertrophy: insights into the mechanism of outflow tract obstruction. Circulation 2010; 122:1298-307. [PMID: 20837895 DOI: 10.1161/circulationaha.109.935551] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND Analyzing the determinants of systolic anterior motion of the mitral valve and consequent left ventricular outflow tract (LVOT) obstruction in patients with asymmetrical septal hypertrophy requires a comprehensive 3-dimensional analysis of mitral leaflet (ML) area, papillary muscle (PM) geometry, and the distribution of left ventricular hypertrophy. METHODS AND RESULTS Real-time 3-dimensional echocardiography was performed in 47 patients with asymmetrical septal hypertrophy and 32 normal controls. Patients included 20 with resting LVOT obstruction (group I) and 27 without (group II). Customized software (Omni 4D) provided a validated measure of ML surface area, LVOT area, mitral annular area and nonplanarity, LVOT hypertrophy index by topography (percent area with wall thickness >16 mm), and 3-dimensional PM positions relative to annulus. ML area was more than twice as large in group I than normal and 1.4 times normal in group II (P<0.001). Group I patients were also characterized by higher LVOT hypertrophy index and medial and anterior displacements of both PMs, resulting in a shorter inter-PM distance. Independent determinants of LVOT obstruction were indexed total ML area (adjusted odds ratio, 5.651; 95% confidence interval, 1.573 to 20.304; P=0.008) and inter-PM distance (adjusted odds ratio, 0.416; 95% confidence interval, 0.203 to 0.854; P=0.0169). Minimal LVOT area during systole correlated well with peak LVOT pressure gradient (R(2)=0.83, P<0.001); its independent determinants were left ventricular end-systolic volume (P=0.0183), indexed total ML area (P=0.0108), inter-PM distance (P=0.0378), annular height (P=0.0047), and LVOT hypertrophy index (P=0.0098). CONCLUSIONS Myocardium is not the only tissue affected in patients with asymmetrical septal hypertrophy, and primary changes of the mitral apparatus, including ML area increase and PM displacement, are independent determinants of LVOT obstruction and provide a comprehensive mechanism that determines leaflet slack and anteriorly directed motion. Abnormal PM-mitral valve geometry assessed by real-time 3-dimensional echocardiography can provide reasonable new targets for individualized intervention.
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Affiliation(s)
- Dae-Hee Kim
- Division of Cardiology, Asan Medical Center, University of Ulsan College of Medicine, 388-1 Poongnap-dong Songpa-gu, Seoul 138-736, South Korea
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Geske JB, Sorajja P, Ommen SR, Nishimura RA. Left ventricular outflow tract gradient variability in hypertrophic cardiomyopathy. Clin Cardiol 2010; 32:397-402. [PMID: 19609895 DOI: 10.1002/clc.20594] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND The presence and magnitude of left ventricular outflow tract (LVOT) obstruction directs the management algorithm in symptomatic patients with hypertrophic cardiomyopathy (HCM). Although it is well known that the degree of LVOT obstruction is dynamic and dependent upon ventricular load and contractility, the magnitude and potential impact of the day-to-day variability seen in practice has not been well appreciated. HYPOTHESES We hypothesized that LVOT gradient variability in HCM has an impact on clinical decision-making. METHODS A total of 100 HCM patients (mean age, 58 +/- 13 years; 47% male) underwent comprehensive 2-dimensional Doppler transthoracic echocardiography and cardiac catheterization with transseptal measurement of left-sided pressures. All studies were performed within 48 hours of one another. RESULTS The correlation of LVOT gradients from both methods performed at different times had a wide scatter with the 95% confidence limits of agreement being +/- 84 mm Hg. For classifying patients as having severe LVOT obstruction on the basis of either method (<30 vs > or = 30 mm Hg), discrepant results occurred in 21% of patients. To confirm the accuracy of Doppler measurements, 15 studies were performed with simultaneous measurement of LVOT gradient, which revealed a very strong correlation (r = 0.98, p < 0.0001) with 95% confidence limits of agreement +/- 12 mm Hg. CONCLUSIONS In patients with HCM, LVOT gradient measurements are routinely obtained to characterize the severity of obstruction. However, these data demonstrate the marked variability of the LVOT obstruction, which must be considered when determining appropriate therapy in symptomatic patients.
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Affiliation(s)
- Jeffrey B Geske
- Division of Internal Medicine, Mayo Clinic College of Medicine, Rochester, Minnesota, USA
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Lee MS, Stelzer P, Varghese R, Fischer GW. Assessment of surgical septal myectomy by real-time 3-dimensional transesophageal echocardiography. J Cardiothorac Vasc Anesth 2010; 25:306-8. [PMID: 20138551 DOI: 10.1053/j.jvca.2009.11.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/08/2009] [Indexed: 11/11/2022]
Affiliation(s)
- Mary S Lee
- Department of Anesthesiology, Mount Sinai School of Medicine, New York, NY 10029, USA
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Salandin V, De Castro S, Cavarretta E, Salvador L, Papetti F, Valfrè C, Pandian NG. Epicardial Real-Time 3-Dimensional Echocardiography With the Use of a Pediatric Transthoracic Probe: A Technical Approach. J Cardiothorac Vasc Anesth 2010; 24:43-50. [DOI: 10.1053/j.jvca.2009.06.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2009] [Indexed: 11/11/2022]
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Shiota T. 3D echocardiography: The present and the future. J Cardiol 2008; 52:169-85. [DOI: 10.1016/j.jjcc.2008.09.004] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2008] [Accepted: 09/04/2008] [Indexed: 12/14/2022]
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Schöndube FA, Schmitto JD. Chirurgische Therapie der hypertrophen obstruktiven Kardiomyopathie (HOCM). ZEITSCHRIFT FUR HERZ THORAX UND GEFASSCHIRURGIE 2008. [DOI: 10.1007/s00398-008-0669-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Diagnostic Value of Left Ventricular Outflow Area in Patients with Hypertrophic Cardiomyopathy: A Real-Time Three-Dimensional Echocardiographic Study. J Am Soc Echocardiogr 2008; 21:789-95. [DOI: 10.1016/j.echo.2008.01.012] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2007] [Indexed: 11/23/2022]
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Monteiro PF, Ommen SR, Gersh BJ, Dearani JA, Schaff HV, Nishimura RA, Tajik AJ. Effects of surgical septal myectomy on left ventricular wall thickness and diastolic filling. Am J Cardiol 2007; 100:1776-8. [PMID: 18082525 DOI: 10.1016/j.amjcard.2007.07.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2007] [Revised: 07/04/2007] [Accepted: 07/04/2007] [Indexed: 11/29/2022]
Abstract
This study was conducted to examine the late effects of surgical myectomy on left ventricular (LV) structure and diastolic function in patients with obstructive hypertrophic cardiomyopathy. Patients with hypertrophic cardiomyopathy who had complete echocardiographic studies before and > or =6 months after myectomy were included in this retrospective analysis of cavity dimension, septal and LV posterior wall thicknesses, and Doppler flow variables. Compared with preoperative measurement, mean septal thickness (23.6 vs 19.5 mm, p <0.001) and LV posterior wall thickness (14.2 vs 12.4 mm, p <0.001) were smaller after myectomy. Likewise, mitral inflow Doppler velocity curves indicated improvement in LV filling, with decreased mitral E velocity (0.95 to 0.87 m/s, p = 0.008). In conclusion, the long-term benefits of this operation may be mediated in part by favorable LV remodeling and changes in LV diastolic filling.
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Affiliation(s)
- Pedro F Monteiro
- Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
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Dearani JA, Ommen SR, Gersh BJ, Schaff HV, Danielson GK. Surgery Insight: septal myectomy for obstructive hypertrophic cardiomyopathy—the Mayo Clinic experience. ACTA ACUST UNITED AC 2007; 4:503-12. [PMID: 17712363 DOI: 10.1038/ncpcardio0965] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2006] [Accepted: 05/11/2007] [Indexed: 02/02/2023]
Abstract
Septal myectomy has been the gold standard treatment for the relief left ventricular outflow tract obstruction and cardiac symptoms in both adults and children with obstructive hypertrophic cardiomyopathy. In almost all circumstances, abnormalities of the mitral valve and subvalvar mitral apparatus can be managed without the need for mitral valve replacement, and other cardiac lesions can be repaired simultaneously. In the current era, the operative mortality for isolated septal myectomy at an experienced center is low in both children and adults (approximately 1%). Excellent late results with myectomy are gratifying: 90% of patients improve by at least one NYHA class, and improvements persist in most individuals on late follow-up. Late survival in patients with obstructive hypertrophic cardiomyopathy who undergo myectomy exceeds that of patients who do not receive surgical treatment and, in addition, myectomy may be associated with reduced long-term risk of sudden cardiac death. These results should serve as a basis for comparison with newer nonsurgical treatment regimens.
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Affiliation(s)
- Joseph A Dearani
- Division of Cardiovascular Surgery, Mayo Clinic and Foundation, Rochester, MN 55905, USA.
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Lang RM, Mor-Avi V, Sugeng L, Nieman PS, Sahn DJ. Three-Dimensional Echocardiography. J Am Coll Cardiol 2006; 48:2053-69. [PMID: 17112995 DOI: 10.1016/j.jacc.2006.07.047] [Citation(s) in RCA: 177] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2006] [Revised: 07/06/2006] [Accepted: 07/10/2006] [Indexed: 10/24/2022]
Abstract
Over the past 3 decades, echocardiography has become a major diagnostic tool in the arsenal of clinical cardiology for real-time imaging of cardiac dynamics. More and more, cardiologists' decisions are based on images created from ultrasound wave reflections. From the time ultrasound imaging technology provided the first insight into the human heart, our diagnostic capabilities have increased exponentially as a result of our growing knowledge and developing technology. One of the most significant developments of the last decades was the introduction of 3-dimensional (3D) imaging and its evolution from slow and labor-intense off-line reconstruction to real-time volumetric imaging. While continuing its meteoric rise instigated by constant technological refinements and continuing increase in computing power, this tool is guaranteed to be integrated in routine clinical practice. The major proven advantage of this technique is the improvement in the accuracy of the echocardiographic evaluation of cardiac chamber volumes, which is achieved by eliminating the need for geometric modeling and the errors caused by foreshortened views. Another benefit of 3D imaging is the realistic and unique comprehensive views of cardiac valves and congenital abnormalities. In addition, 3D imaging is extremely useful in the intraoperative and postoperative settings because it allows immediate feedback on the effectiveness of surgical interventions. In this article, we review the published reports that have provided the scientific basis for the clinical use of 3D ultrasound imaging of the heart and discuss its potential future applications.
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Affiliation(s)
- Roberto M Lang
- Cardiac Imaging Center, Department of Medicine, University of Chicago, Chicago, Illinois 60637, USA.
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Song JM, Fukuda S, Lever HM, Daimon M, Agler DA, Smedira NG, Thomas JD, Shiota T. Asymmetry of Systolic Anterior Motion of the Mitral Valve in Patients with Hypertrophic Obstructive Cardiomyopathy: A Real-time Three-dimensional Echocardiographic Study. J Am Soc Echocardiogr 2006; 19:1129-35. [PMID: 16950467 DOI: 10.1016/j.echo.2006.04.017] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2005] [Indexed: 11/18/2022]
Abstract
By geometric analysis of real-time 3-dimensional echocardiography performed in 39 patients with hypertrophic obstructive cardiomyopathy and definite systolic anterior motion of the mitral valve, we found that the angle between the mitral annular plane and basal portion of the anterior mitral valve leaflet, and the angle between the basal portion of the anterior leaflet and its tip portion measured in the medial and central anteroposterior planes, were significantly smaller than those in the lateral plane. The distance between the interventricular septum and the anterior mitral valve tip in the medial and central plane was also significantly smaller than that in the lateral plane. The lateral distance between the interventricular septum and the anterior mitral valve tip was the only independent determinant of left ventricular outflow tract pressure gradient by multiple stepwise regression analysis. In conclusion, systolic anterior motion of the mitral valve develops predominantly in the medial side, resulting in laterally located narrow left ventricular outflow tract opening in patients with hypertrophic obstructive cardiomyopathy.
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Affiliation(s)
- Jong-Min Song
- Department of Cardiovascular Medicine, The Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA
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Sitges M, Qin JX, Lever HM, Bauer F, Drinko JK, Agler DA, Kapadia SR, Tuzcu EM, Smedira NG, Lytle BW, Thomas JD, Shiota T. Evaluation of left ventricular outflow tract area after septal reduction in obstructive hypertrophic cardiomyopathy: a real-time 3-dimensional echocardiographic study. Am Heart J 2005; 150:852-8. [PMID: 16209993 DOI: 10.1016/j.ahj.2004.12.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2004] [Accepted: 12/10/2004] [Indexed: 01/19/2023]
Abstract
BACKGROUND The comparative impact of percutaneous alcohol septal reduction (ASR) and surgical myectomy on the left ventricular outflow tract (LVOT) area in patients with obstructive hypertrophic cardiomyopathy (HC) is not well defined. Real-time 3-dimensional echocardiography (RT3DE) provides accurate information about the LVOT geometry and shape. We aimed to analyze the change in LVOT area after septal reduction interventions in patients with obstructive HC using RT3DE. METHODS Thirty-one HC patients (mean age 53 +/- 17 years) undergoing ASR (n = 14) or myectomy (n = 17) were studied at baseline and during follow-up with RT3DE. LVOT area was measured after observing the LVOT in the 3D space as the smallest area during midsystole. LVOT pressure gradients were determined by conventional continuous wave Doppler. RESULTS Overall, LVOT area increased from 0.86 +/- 0.20 to 2.50 +/- 0.88 cm2 (P < .01), and the resting LVOT pressure gradient decreased from 64 +/- 41 to 16 +/- 10 mm Hg (P < .01) after a median follow-up of 3 months after intervention (range 1-24 months). A similar significant decrease in LVOT pressure gradients was seen in myectomy and ASR groups (from 62 +/- 39 to 12 +/- 5 mm Hg and from 67 +/- 43 to 21 +/- 14 mm Hg, respectively, P < .01 in between each group, and P = NS between both groups). However, the increase in LVOT area was greater in myectomy than in ASR group (from 0.81 +/- 0.22 to 2.90 +/- 0.64 cm2 and 0.93 +/- to 0.16 to 2.02 +/- 0.92 cm2, respectively, P < .01 between both groups). CONCLUSION RT3DE demonstrated an effective increase in LVOT area after both ASR and myectomy. This technique may be useful for assessing the results of septal reduction in patients with obstructive HC.
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Affiliation(s)
- Marta Sitges
- Department of Cardiovascular Medicine, The Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA
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The case for surgery in obstructive hypertrophic cardiomyopathy. J Am Coll Cardiol 2004; 44:2044-53. [PMID: 15542290 DOI: 10.1016/j.jacc.2004.04.063] [Citation(s) in RCA: 123] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/18/2003] [Accepted: 04/27/2004] [Indexed: 12/28/2022]
Abstract
Relief of left ventricular (LV) outflow obstruction in patients with hypertrophic cardiomyopathy (HCM) and disabling symptoms refractory to maximum medical management has historically been a surgical problem. Surgical septal myectomy permanently abolishes systolic anterior motion of the mitral valve and mitral regurgitation, while normalizing LV pressures and wall stress. Also, these salutary goals are achieved without encumbering patients with post-procedural devices (e.g., pacemakers or defibrillators) or creating potentially arrhythmogenic substrates, as may occur with alcohol septal ablation. Procedural morbidity and mortality risk with myectomy is similar to, and in some institutions less than those for alcohol septal ablation. Over four decades, reports from numerous centers worldwide have consistently and unequivocably documented the benefits of surgery on hemodynamic and functional state, restoring normal and acceptable quality of life to patients of all ages by largely reversing the complications of heart failure. Long-term survival after myectomy is similar to that of the general population and superior to non-operated patients with obstruction. The LV outflow tract morphology in HCM is heterogeneous and not uncommonly includes congenital anomalies of the mitral valve apparatus for which the surgeon has the flexibility to adapt the repair, often employing an extended myectomy. In the current atmosphere of increasing and perhaps excessive enthusiasm for newer catheter-based interventions, it is a critical time to promote and re-emphasize that surgery is the time-honored (and presently the most effective) treatment strategy for relieving heart failure-related disability resulting from dynamic LV outflow obstruction in HCM, and is the primary treatment option for this subgroup of severely symptomatic drug-refractory patients.
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Lima JAC, Desai MY. Cardiovascular magnetic resonance imaging: current and emerging applications. J Am Coll Cardiol 2004; 44:1164-71. [PMID: 15364314 DOI: 10.1016/j.jacc.2004.06.033] [Citation(s) in RCA: 118] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2004] [Revised: 05/06/2004] [Accepted: 06/07/2004] [Indexed: 12/21/2022]
Abstract
Magnetic resonance (MR) imaging is gaining importance in cardiology as the newest, most complex, and rapidly emerging noninvasive test of choice for patients with a multitude of cardiovascular problems. It has long been recognized to provide an accurate and reliable means of assessing the function and anatomy of the heart and great vessels, but its emerging role as one of the dominant imaging modalities in other aspects of cardiology such as perfusion imaging, atherosclerosis imaging, and coronary artery imaging cannot be understated. As MR technology evolves, newer therapeutic applications are also being developed, including specific MR-compatible catheters for electrophysiology studies/ablation as well as interventional cardiology related procedures, which may alter the way we practice cardiology in the future. Also, MR is entering an important phase in its evolution, with an anticipated exponential growth in its current applications and through the development of newer molecular imaging applications. It is anticipated that such developments will be coupled to the utilization of molecular markers to index biologic processes to allow for their in vivo visualization. This combination of biochemical markers and imaging methodology will also usher in an era of molecular imaging during which much progress in the diagnosis and treatment of cardiovascular disease is anticipated.
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Affiliation(s)
- João A C Lima
- Division of Cardiology, Department of Medicine, Johns Hopkins University, Baltimore, Maryland, USA.
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Qin JX, Shiota T, Asher CR, Smedira NG, Shin JH, Agler DA, Nash PJ, Greenberg NL, Lever HM, Lytle BW, Thomas JD. Usefulness of real-time three-dimensional echocardiography for evaluation of myectomy in patients with hypertrophic cardiomyopathy. Am J Cardiol 2004; 94:964-6. [PMID: 15464691 DOI: 10.1016/j.amjcard.2004.06.043] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2004] [Revised: 06/08/2004] [Accepted: 06/08/2004] [Indexed: 11/28/2022]
Abstract
Real-time 3-dimensional echocardiography was performed in 10 patients with obstructive hypertrophic cardiomyopathy (HC) before and after myectomy and in 6 controls. The exact location of systolic anterior motion of the mitral leaflet was shown in all patients with HC with a predominant involvement of the medial portion in 4 patients and the middle portion in 6 patients. The smallest area of the left ventricular outflow tract was significantly smaller in patients with HC than in controls (1.4 +/- 0.7 vs 5.1 +/- 1.2 cm(2), p <0.01), significantly increased after myectomy (4.8 +/- 1.8 cm2, p <0.01) and was associated with a reduction of the pressure gradient at rest from 63 +/- 41 to 15 +/- 5 mm Hg (p <0.01).
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Affiliation(s)
- Jian Xin Qin
- Department of Cardiovascular Medicine, The Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA
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Frielingsdorf J, Franke A, Hess OM, Flachskampf FA. Are there sex differences in regional systolic function and wall stress in hypertrophic obstructive cardiomyopathy? A three-dimensional echocardiography study. J Am Soc Echocardiogr 2004; 17:638-43. [PMID: 15163935 DOI: 10.1016/j.echo.2004.02.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
OBJECTIVES Sex-related differences in left ventricular (LV) systolic function have been previously reported in patients with aortic stenosis and hypertensive heart disease. The goal of this study was to determine systolic function of the LV in male and female patients with hypertrophic obstructive cardiomyopathy and to relate it to wall thickness and wall stress, respectively. BACKGROUND Wall thickening, a parameter of regional systolic function, is determined by wall thickness and wall stress. A comprehensive analysis of regional LV function was performed from multiplane transesophageal echocardiography with 3-dimensional reconstruction of the LV. METHODS In 21 patients (11 men and 10 women) 4 parallel (2 basal and 2 apical) equidistant short-axis cross sections from base to apex were obtained from the reconstructed LV. In each short axis, 24 wall-thickness measurements were carried out in 15-degree intervals at end-diastole (ED) and end-systole. Thus, a total of 192 measurements were obtained in each patient. Wall thickening, a parameter of regional systolic function, was calculated as the difference of ED and end-systolic wall thickness, and fractional thickening as thickening divided by ED thickness. RESULTS Fractional thickening and wall stress were inversely related to ED wall thickness in both men and women. Women showed better LV systolic function when compared with men (P <.001). However, when corrected for wall stress, which was lower in women, there was no sex difference in systolic function. CONCLUSIONS There are regional differences in LV systolic function in men and women that depend on regional wall thickness and wall stress.
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Desai MY, Lima JA, Bluemke DA. Cardiovascular magnetic resonance imaging: current applications and future directions. Methods Enzymol 2004; 386:122-48. [PMID: 15120249 DOI: 10.1016/s0076-6879(04)86005-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Milind Y Desai
- Department of Internal Medicine, The Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
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Sherrid MV, Chaudhry FA, Swistel DG. Obstructive hypertrophic cardiomyopathy: echocardiography, pathophysiology, and the continuing evolution of surgery for obstruction. Ann Thorac Surg 2003; 75:620-32. [PMID: 12607696 DOI: 10.1016/s0003-4975(02)04546-0] [Citation(s) in RCA: 119] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Our understanding of the pathophysiology of obstruction in hypertrophic cardiomyopathy has evolved since initial descriptions in the late 1950s. This review addresses the cause of obstruction, from early ideas that a muscular outflow tract sphincter was the cause, through the discovery of systolic anterior motion (SAM) of the mitral valve, to current understanding that flow drag, the pushing force of flow, is the dominant hydrodynamic mechanism for SAM. The continuing redesign and modification of surgical procedures to relieve outflow obstruction have corresponded to ideas about the cause of this condition. In this review we discuss the evolution of surgical procedures to relieve obstruction and review modern surgical approaches. Medical and nonsurgical methods for reducing obstruction are reviewed, as well as efforts to prevent sudden arrhythmic cardiac death. Echocardiography has become central to understanding this complex phenomenon, and for clinical diagnosis, operative planning and intraoperative management.
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Affiliation(s)
- Mark V Sherrid
- Division of Cardiology, St. Luke's-Roosevelt Hospital Center, Columbia University, College of Physicians and Surgeons, New York, New York 10019, USA.
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Qin JX, Shiota T, Lever HM, Rubin DN, Bauer F, Kim YJ, Sitges M, Greenberg NL, Drinko JK, Martin M, Agler DA, Thomas JD. Impact of left ventricular outflow tract area on systolic outflow velocity in hypertrophic cardiomyopathy: a real-time three-dimensional echocardiographic study. J Am Coll Cardiol 2002; 39:308-14. [PMID: 11788224 DOI: 10.1016/s0735-1097(01)01722-3] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVES The aim of this study was to use real-time three-dimensional echocardiography (3DE) to investigate the quantitative relation between minimal left ventricular (LV) outflow tract area (A(LVOT)) and maximal LV outflow tract (LVOT) velocity in patients with hypertrophic obstructive cardiomyopathy (HCM). BACKGROUND In patients with HCM, LVOT velocity should change inversely with minimal A(LVOT) unless LVOT obstruction reduces the pumping capacity of the ventricle. METHODS A total of 25 patients with HCM with systolic anterior motion (SAM) of the mitral valve leaflets underwent real-time 3DE. The smallest A(LVOT) during systole was measured using anatomically oriented two-dimensional "C-planes" within the pyramidal 3DE volume. Maximal velocity across LVOT was evaluated by two-dimensional Doppler echocardiography (2DE). For comparison with 3DE A(LVOT), the SAM-septal distance was determined by 2DE. RESULTS Real-time 3DE provided unique information about the dynamic SAM-septal relation during systole, with A(LVOT) ranging from 0.6 to 5.2 cm(2) (mean: 2.2 +/- 1.4 cm(2)). Maximal velocity (v) correlated inversely with A(LVOT) (v = 496 A(LVOT)(-0.80), r = -0.95, p < 0.001), but the exponent (-0.80) was significantly different from -1.0 (95% confidence interval: -0.67 to -0.92), indicating a significant impact of small A(LVOT) on the peak LVOT flow rate. By comparison, the best correlation between velocity and 2DE SAM-septal distance was significantly (p < 0.01) poorer at -0.83, indicating the superiority of 3DE for assessing A(LVOT). CONCLUSIONS Three-dimensional echocardiography-measured A(LVOT) provides an assessment of HCM geometry that is superior to 2DE methods. These data indicate that the peak LVOT flow rate appears to be significantly decreased by reduced A(LVOT). Real-time 3DE is a potentially valuable clinical tool for assessing patients with HCM.
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Affiliation(s)
- Jian Xin Qin
- Department of Cardiology, the Cleveland Clinic Foundation, Cleveland, Ohio 44195, USA
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Franke A, Kühl HP, Schoendube FA. MRI Versus 3D echocardiography in postinterventional patients with hypertrophic obstructive cardiomyopathy. Circulation 2001; 104:E32-3. [PMID: 11502716 DOI: 10.1161/01.cir.104.7.e32] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Frielingsdorf J, Franke A, Kühl HP, Hess OM, Flachskampf FA. Evaluation of septal hypertrophy and systolic function in diseases that cause left ventricular hypertrophy: a 3-dimensional echocardiography study. J Am Soc Echocardiogr 2001; 14:370-7. [PMID: 11337682 DOI: 10.1067/mje.2001.112674] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
OBJECTIVES The goals of this study were to determine regional systolic function of the septum and to relate it to regional wall thickness and wall stress. BACKGROUND Wall thickening, a parameter of systolic function, is determined by wall thickness and wall stress. In patients with hypertrophic obstructive cardiomyopathy (HOCM), hypertrophic nonobstructive cardiomyopathy (HNCM), and hypertensive heart disease (HHD), regional systolic function of normal and hypertrophic septal regions has been incompletely characterized by 2-dimensional echocardiography. Thus, multiplane transesophageal echocardiography with 3-dimensional reconstruction of the septum was used. METHODS AND RESULTS In 49 patients (15 controls, 11 with HOCM, 8 with HNCM, and 15 with HHD) 4 parallel (2 basal and 2 apical) equidistant short-axis cross sections from base to apex were obtained from the reconstructed septum. In each short-axis cross section, 6 wall-thickness measurements were made in 15 degrees intervals at end diastole and end systole, for a total of 48 measurements in each patient. Fractional thickening was calculated as wall thickening divided by end-diastolic wall thickness. Wall thickness of the basal cross sections was significantly thicker (P < .001) in HOCM and HNCM than in HHD. However, circumferential wall thickness was more evenly distributed in HNCM and HHD when compared with HOCM. In the basal cross sections, fractional thickening was similarly reduced in all hearts, though basal wall stress was significantly different in all groups (P < .001). In the apical cross sections, wall thickness was similar in all diseased hearts, but fractional thickening was better (P < .001) and wall stress lower (P < .001) in HNCM than in HOCM and HHD. CONCLUSIONS In septal regions without or with only mild hypertrophy, regional systolic function is preserved and appears to be determined by hemodynamic factors such as wall stress. However, in regions with moderate to severe hypertrophy, systolic function is markedly and uniformly impaired in all groups, which seems not to be caused by differences in wall thickness and wall stress but by the degree of the myocardial disease process.
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Affiliation(s)
- J Frielingsdorf
- Medical Clinic I, Rheinisch-Westfälische Technische Hochschule, Aachen, Germany
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Shively BK. Transesophageal echocardiographic (TEE) evaluation of the aortic valve, left ventricular outflow tract, and pulmonic valve. Cardiol Clin 2000; 18:711-29. [PMID: 11236162 DOI: 10.1016/s0733-8651(05)70176-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The most important role of TEE in aortic valve disease is in the diagnosis of endocarditis and its complications. Examination of the annulus and subvalvular region is essential in any patient with possible aortic valve endocarditis. Assessment of the severity of aortic stenosis is a useful application of TEE when other data are either inconsistent or unavailable. TEE can provide a diagnosis of the origin of acute severe aortic insufficiency; this information may play a critical role in surgical planning. The diagnosis of a variety of aortic valve diseases can be made when TEE is performed to find an embolic source or to rule out dissection. In the case of mass lesions, such as papillary fibroelastomas and Libman-Sacks vegetations, the results of TEE carry major therapeutic implications. TEE offers generally excellent quality images of the LVOT and images of the RVOT and pulmonic valve that are superior to transthoracic echocardiography. The major clinical usefulness of TEE stems from its ability to identify pulmonic valve mass lesions and the causes of left and right ventricular outflow obstruction. TEE is also an important adjunct in the surgical management of left ventricular outflow obstruction.
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Affiliation(s)
- B K Shively
- Adult Echocardiographic Laboratory, Division of Cardiology, Oregon Health Sciences University, Portland, Oregon, USA
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Gunasegaran K, Yao J, De Castro S, Nesser HJ, Pandian NG. Three-dimensional transesophageal echocardiography (TEE) and other future directions. Cardiol Clin 2000; 18:893-910. [PMID: 11236172 DOI: 10.1016/s0733-8651(05)70186-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
As faster imaging systems enter the market, three-dimensional echocardiography is gearing up to become a useful tool in assisting the clinician to image the heart in many innovative projections. What started out as a novel idea of displaying a three-dimensional anatomic picture of the heart now provides a multitude of views of the heart and its structures. Information gained from anatomic and dynamic data has helped clinicians and surgeons in making clinical decisions. In the future, this imaging modality may become a routine imaging modality for assessing cardiac pathology and may serve to increase understanding of the dynamics of the heart.
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Affiliation(s)
- K Gunasegaran
- Department of Medicine, Tufts University School of Medicine, Boston, Massachusetts, USA
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Kuhn H, Gietzen F. [Transcoronary ablation of septal hypertrophy (TASH): supersedes it the surgery (myectomy)?]. Herz 1999; 24:647-51. [PMID: 10652679 DOI: 10.1007/bf03044490] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- H Kuhn
- Medizinische Klinik II-Schwerpunkt Kardiologie, Städtische Kliniken Bielefeld, Akademisches Lehrkrankenhaus der Universität Münster.
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