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Anwar AM. Potential Diagnostic and Prognostic Values of Left Atrial Strain in Valvular Heart Disease. J Cardiovasc Echogr 2024; 34:41-49. [PMID: 39086705 PMCID: PMC11288298 DOI: 10.4103/jcecho.jcecho_9_24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 02/25/2024] [Accepted: 04/24/2024] [Indexed: 08/02/2024] Open
Abstract
There has been increasing evidence supporting the importance of left atrial (LA) functional analysis and measurement in various physiologic and pathologic cardiovascular conditions due to its high diagnostic and prognostic values. Assessment of LA strain (LAS) has emerged as an early marker of subclinical LA dysfunction. Using speckle-tracking echocardiography, LAS can be measured in all phases of LA function (reservoir, conduit, and booster pump). In valvular heart disease (VHD), surgical and nonsurgical interventions should be performed before irreversible left ventricular (LV) and/or LA myocardial dysfunction. The current guidelines recommended using LV strain as a parameter for early detection and timely intervention. Currently, many published data have shown the diagnostic and prognostic values of LAS in VHD, which is encouraging to integrate LAS during echo assessment. In this review, we aim to collect the current data about the clinical utility of LAS changes in risk stratification, predicting outcome, and guiding the time of intervention in VHD. The review summarized these data according to the type of valve pathologies.
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Affiliation(s)
- Ashraf Mohammed Anwar
- Department of Cardiology, King Fahad Armed Forces Hospital, Jeddah, Saudi Arabia
- Department of Cardiology, Faculty of Medicine, Al-Azhar University, Cairo, Egypt
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Homma Y, Takahashi M, Fuse K, Okamoto Y, Yamamoto K, Kuwabara A, Okabe M, Yoshii S, Kato K, Akazawa K, Aizawa Y. Atrial electrical remodeling and function after transcatheter aortic valve replacement in patients with aortic stenosis. Heart Vessels 2024; 39:167-174. [PMID: 37840043 DOI: 10.1007/s00380-023-02321-1] [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: 03/02/2023] [Accepted: 09/20/2023] [Indexed: 10/17/2023]
Abstract
To examine reverse atrial electrical remodeling in patients with aortic stenosis (AS) after trans-catheter aortic valve replacement (TAVR). In 65 consecutive patients with severe AS (83 ± 4 years, 47 (72.3%) females), we analyzed ECG records for the P wave duration (PWD) in lead II and P-terminal force (PTFV1) in V1, and measured cardiac dimensions and function by echocardiography (ECHO) following TAVR. Biomarkers were measured to assess myocardial injury by TAVR. TAVR was successfully performed without major complications: the aortic valve area increased from 0.62 ± 0.14 cm2 to 1.52 ± 0.24cm2, and the trans-aortic pressure gradient decreased from 58.4 ± 15.9 mmHg to 15.0 ± 19.6 mmHg. PWD and PTFV increased immediately after TAVR and returned to the pre-TAVR levels on the next day. Then, the PWD declined toward 6 months after TAVR non-significantly in all patients, but significantly in 25 patients with baseline PWD ≥ 130 ms (P = 0.039). PTFV1 showed no long-term change. Improvement was observed in the ejection fraction, all thickness of the left ventricle and in the left atrial dimensions on ECHO. After recovery from transient aggravation by TAVR procedure, PWD reversed slowly, and the change was significant in those with baseline PWD ≥ 130 ms while change in PTFV1 was not significant at 6 months of follow-up. ECHO showed a reversal of remodeling in the left ventricle and in the left atrial dimension after TAVR.
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Affiliation(s)
- Yujiro Homma
- Department of Cardiology, Tachikawa General Hospital, Nagaoka, Japan
| | - Minoru Takahashi
- Department of Cardiology, Tachikawa General Hospital, Nagaoka, Japan
| | - Koichi Fuse
- Department of Cardiology, Tachikawa General Hospital, Nagaoka, Japan
| | - Yuki Okamoto
- Department of Thoracic Surgery, Tachikawa General Hospital, Nagaoka, Japan
| | - Kazuo Yamamoto
- Department of Thoracic Surgery, Tachikawa General Hospital, Nagaoka, Japan
| | - Atsushi Kuwabara
- Department of Anesthesiology, Tachikawa General Hospital, Nagaoka, Japan
| | - Masaaki Okabe
- Department of Cardiology, Tachikawa General Hospital, Nagaoka, Japan
| | - Shinpei Yoshii
- Department of Thoracic Surgery, Tachikawa General Hospital, Nagaoka, Japan
| | - Kiminori Kato
- Department of Prevention of Noncommunicable Diseases and Promotion of Health Checkup, Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan
| | - Kohei Akazawa
- Department of Medical Informatics, Niigata University Hospital, Niigata, Japan
| | - Yoshifusa Aizawa
- Department of Research and Development, Tachikawa Medical Center, 1-24, Asahioka, Nagaoka, 940-8621, Japan.
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Left Atrial Remodeling in Response to Aortic Valve Replacement: Pathophysiology and Myocardial Strain Analysis. LIFE (BASEL, SWITZERLAND) 2022; 12:life12122074. [PMID: 36556439 PMCID: PMC9788515 DOI: 10.3390/life12122074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 12/03/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022]
Abstract
Severe aortic stenosis (AS) is the most common valve disease in the elderly and is associated with poor prognosis if treated only medically. AS causes chronic pressure overload, concentric left ventricular (LV) hypertrophy, myocardial stiffness, and diastolic dysfunction. This adverse remodeling also affects the left atrium (LA), which dilates and develops myocardial fibrosis, with a reduction in intrinsic function and a consequent high risk of the development of atrial fibrillation. Speckle-tracking echocardiography is able to detect myocardial dysfunction before other conventional parameters, such as LV ejection fraction, and also predict clinical outcomes. This review aims at describing LV and LA remodeling in AS and before and after aortic valve replacement and the usefulness of myocardial strain analysis in this clinical setting.
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Investigation on Imaging Features and Clinical Significance of Cardiac CT in Comprehensive Evaluation of Aortic Valve and Root before Percutaneous Aortic Valve Replacement. BIOMED RESEARCH INTERNATIONAL 2022; 2022:5838670. [PMID: 36177061 PMCID: PMC9514922 DOI: 10.1155/2022/5838670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Revised: 08/04/2022] [Accepted: 08/20/2022] [Indexed: 11/18/2022]
Abstract
Medical imaging feature analysis is the basis of medical image processing and analysis. The solution of this problem not only directly affects the successful application of computer graphics and image technology in medicine but also has important theoretical and practical significance. In this paper, the imaging characteristics and clinical significance are discussed by studying the comprehensive evaluation of aortic valve and root before aortic valve replacement. In recent years, preoperative comprehensive evaluation of the aortic valve and root has been gradually carried out. Compared with traditional methods, minimally invasive surgery brings more accurate diagnosis to patients, quick recovery and discharge after surgery, and less pain. This study retrospectively includes patients with severe aortic stenosis who underwent TAVR with routine computed tomography. Based on CT images, the determination and grouping of bicuspid aortic valve and tricuspid aortic valve were completed. Thirteen cross-sectional levels of the aorta-iliac-femoral vascular access were completed. The results showed that 3 people had stroke (17.6%) and 5 people had myocardial infarction (29.4%) during the follow-up period. Atrial fibrillation occurred in 5 patients (29.4%), permanent pacemaker implantation was performed in 1 patient (5.9%), and acute kidney injury occurred in 7 patients (41.2%). No patient died due to surgery-related causes, and the analysis of imaging features and clinical significance in the preoperative comprehensive evaluation of the aortic valve and root played a crucial role. In the training stage, the principal component analysis method was used to train the shape, and the model of the shape intensity of the aortic valve and the shape change of each principal component was obtained. The most probable aortic valve region in the target image was obtained by matching the similarity of all atlases, and the correct aortic valve segmentation was obtained by using the first level set of shape intensity. The experimental part verified the accuracy of the algorithm.
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Carpenito M, Fanti D, Mega S, Benfari G, Bono MC, Rossi A, Ribichini FL, Grigioni F. The Central Role of Left Atrium in Heart Failure. Front Cardiovasc Med 2021; 8:704762. [PMID: 34485406 PMCID: PMC8414134 DOI: 10.3389/fcvm.2021.704762] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 07/19/2021] [Indexed: 12/28/2022] Open
Abstract
In past cardiovascular medicine, the attention to the left ventricle-identified as the only indicator and determinant of healthy or unhealthy cardiac conditions- has systematically hidden the role of the left atrium (LA). The recent advances in cardiovascular imaging have provided a better understanding of LA anatomy, physiology, and pathology, making us realize that this functional structure is far from being an innocent spectator. We now know that the LA's mechanical and neuro-hormonal properties play a relevant part in several cardiovascular diseases, including atrial fibrillation, ischemic heart disease, valvular heart disease, and heart failure. The present review aims to describe the role of LA in the specific setting of heart failure. We provide currently available information on LA structure and function and summarize its role as a determinant of symptoms, prognosis, and potential therapeutic target in heart failure patients.
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Affiliation(s)
- Myriam Carpenito
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Diego Fanti
- Section of Cardiology, Department of Medicine, University of Verona, Verona, Italy
| | - Simona Mega
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Giovanni Benfari
- Section of Cardiology, Department of Medicine, University of Verona, Verona, Italy
| | - Maria Caterina Bono
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
| | - Andrea Rossi
- Section of Cardiology, Department of Medicine, University of Verona, Verona, Italy
| | | | - Francesco Grigioni
- Unit of Cardiac Sciences, Department of Medicine, Campus Bio-Medico University of Rome, Rome, Italy
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Borde D, Joshi P, Asegaonkar B, Agrawal A. Perioperative Changes in Global Myocardial Work Indices in a Patient With Severe Aortic Stenosis With Severe Left Ventricular Dysfunction Undergoing Surgical Aortic Valve Replacement. J Cardiothorac Vasc Anesth 2021; 36:2060-2065. [PMID: 34389212 DOI: 10.1053/j.jvca.2021.07.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 07/11/2021] [Accepted: 07/19/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Deepak Borde
- Department of Cardiac Anesthesia, Ozone Anesthesia Group, Aurangabad, Maharashtra, India.
| | - Pooja Joshi
- Department of Cardiac Anesthesia, Ozone Anesthesia Group, Aurangabad, Maharashtra, India
| | - Balaji Asegaonkar
- Department of Cardiac Anesthesia, Ozone Anesthesia Group, Aurangabad, Maharashtra, India
| | - Ashish Agrawal
- Department of Cardiac Surgery, Seth Nandlal Dhoot Hospital, Aurangabad, Maharashtra, India
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Ankola AA, DiLorenzo MP, Turner ME, Torres AJ, Crystal MA, Shah A. Left Ventricular Strain Normalizes After Balloon Aortic Valvuloplasty in Infants with Congenital Aortic Stenosis. Pediatr Cardiol 2020; 41:576-583. [PMID: 32086562 DOI: 10.1007/s00246-020-02322-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 02/17/2020] [Indexed: 12/18/2022]
Abstract
Severe aortic stenosis (AS) causes left ventricular (LV) afterload and subendocardial ischemia. Despite this, most infants with AS have normal LV ejection fraction (EF). Strain analysis using two-dimensional speckle tracking echocardiography (2DSTE) may identify more sensitive markers of systolic dysfunction. We sought to show changes in LV strain after balloon aortic valvuloplasty (BAV) in infants with AS. Twenty-seven infants ≤ 1 year of age with AS who underwent BAV from 2007 to 2017 were included. Echocardiograms before/after BAV were retrospectively analyzed with 2DSTE. Median age was 29 days (interquartile range 3-52) and LV EF was 64 ± 10%. Global longitudinal strain (GLS) significantly improved post-BAV (- 17 ± 5 vs. - 20 ± 4%, p = 0.001) with no difference in global circumferential strain. Peak longitudinal strain was abnormal at the inferoseptal base and mid-ventricle (- 15 ± 6 and - 17 ± 5 = 7%, respectively) and significantly improved in the basal and mid-anterolateral segments (- 17 ± 5 vs. - 21 ± 5%, p < 0.01; - 17 ± 6% vs. - 20 ± 5%, p = 0.01, respectively). Five (20%) patients underwent reintervention, and had significantly higher peak-to-peak pre and post-BAV AS gradients (86 ± 14 vs. 61 ± 20 mmHg, p = 0.02; 33 ± 17 vs. 21 ± 10 mmHg, p = 0.04, respectively). In conclusion, longitudinal strain is abnormal in infants with AS and improves to previously published normal values after BAV.
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Affiliation(s)
- Ashish A Ankola
- Division of Pediatric Cardiology, Morgan Stanley Children's Hospital of New York Presbyterian, Columbia University Medical Center, 3959 Broadway, CHN 2-253, New York, NY, 10032, USA.
| | - Michael P DiLorenzo
- Division of Pediatric Cardiology, Morgan Stanley Children's Hospital of New York Presbyterian, Columbia University Medical Center, 3959 Broadway, CHN 2-253, New York, NY, 10032, USA
| | - Mariel E Turner
- Division of Pediatric Cardiology, Morgan Stanley Children's Hospital of New York Presbyterian, Columbia University Medical Center, 3959 Broadway, CHN 2-253, New York, NY, 10032, USA
| | - Alejandro J Torres
- Division of Pediatric Cardiology, Morgan Stanley Children's Hospital of New York Presbyterian, Columbia University Medical Center, 3959 Broadway, CHN 2-253, New York, NY, 10032, USA
| | - Matthew A Crystal
- Division of Pediatric Cardiology, Morgan Stanley Children's Hospital of New York Presbyterian, Columbia University Medical Center, 3959 Broadway, CHN 2-253, New York, NY, 10032, USA
| | - Amee Shah
- Division of Pediatric Cardiology, Morgan Stanley Children's Hospital of New York Presbyterian, Columbia University Medical Center, 3959 Broadway, CHN 2-253, New York, NY, 10032, USA
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Merdler I, Loewenstein I, Hochstadt A, Morgan S, Schwarzbard S, Sadeh B, Peri Y, Shacham Y, Finkelstein A, Steinvil A. Effectiveness and Safety of Transcatheter Aortic Valve Implantation in Patients With Aortic Stenosis and Variable Ejection Fractions (<40%, 40%-49%, and >50%). Am J Cardiol 2020; 125:583-588. [PMID: 31843234 DOI: 10.1016/j.amjcard.2019.10.059] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 10/29/2019] [Accepted: 10/30/2019] [Indexed: 11/18/2022]
Abstract
We evaluated the safety and efficacy of transcatheter aortic valve implantation (TAVI) in aortic stenosis patients with mid-range ejection fraction (ASmrEF) and compared it to aortic stenosis patients with reduced ejection fraction (ASrEF) and preserved ejection fraction (ASpEF). TAVI cases were stratified by baseline ejection fraction (ASrEF, ASmrEF, ASpEF) and compared for characteristics, procedural outcomes, and change in echocardiographic parameters at 1 year and mortality over a 5-year follow-up. The final study population included 708 patients who underwent TAVI. ASmrEF patients presented with improved EF at 1-year after procedure (49.0 ± 9.8 at 1 year vs 43.0 ± 2.5 at baseline, p <0.001) and showed improvements in left ventricular (LV) diameters (LV end-diastolic diameter: 50.4 ± 6.0 at 1 year vs 53.0 ± 5.5 at baseline and LV end-systolic diameter 34.7 ± 7.8 at 1 year vs 39.5 ± 5.9 at baseline, p <0.001 for both). LVEF improved for patients with ASrEF but not in ASpEF patients. LV diameters did not improve for patients in either group. Procedural safety and success rates were similar between all heart failure groups. Survival rates over a 5-year follow-up post-TAVI were not different between patients with ASmrEF, ASrEF, and ASpEF (ASrEF 78.4%, ASmrEF 81.9%, ASpEF 78.3%, p = 0.327). TAVI for patients with ASmrEF is safe and effective and results in marked improvement of LV function and structure.
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Affiliation(s)
- Ilan Merdler
- Department of Cardiology, Tel-Aviv Sourasky Medical Center affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Itamar Loewenstein
- Department of Cardiology, Tel-Aviv Sourasky Medical Center affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Aviram Hochstadt
- Department of Cardiology, Tel-Aviv Sourasky Medical Center affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Samuel Morgan
- Department of Cardiology, Tel-Aviv Sourasky Medical Center affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Sivan Schwarzbard
- Department of Cardiology, Tel-Aviv Sourasky Medical Center affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Ben Sadeh
- Department of Cardiology, Tel-Aviv Sourasky Medical Center affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Yogev Peri
- Department of Cardiology, Tel-Aviv Sourasky Medical Center affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Yacov Shacham
- Department of Cardiology, Tel-Aviv Sourasky Medical Center affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Ariel Finkelstein
- Department of Cardiology, Tel-Aviv Sourasky Medical Center affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Arie Steinvil
- Department of Cardiology, Tel-Aviv Sourasky Medical Center affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
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Hulshof HG, van Oorschot F, van Dijk AP, Hopman MTE, George KP, Oxborough DL, Thijssen DHJ. Changes in dynamic left ventricular function, assessed by the strain-volume loop, relate to reverse remodeling after aortic valve replacement. J Appl Physiol (1985) 2019; 127:415-422. [DOI: 10.1152/japplphysiol.00190.2019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Aortic valve replacement (AVR) leads to remodeling of the left ventricle (LV). Adopting a novel technique to examine dynamic LV function, our study explored whether post-AVR changes in dynamic LV function and/or changes in aortic valve characteristics are associated with LV mass regression during follow-up. We retrospectively analyzed 30 participants with severe aortic stenosis who underwent standard transthoracic echocardiographic assessment before AVR [88 (IQR or interquartile range: 22–143) days], post-AVR [13 (6–22) days], and during follow-up [455 (226–907) days]. We assessed standard measures of LV structure, function, and aortic valve characteristics. Novel insight into dynamic LV function was provided through a four-chamber image by examination of the temporal relation between LV longitudinal strain (ε) and volume (ε-volume loops), representing the contribution of LV mechanics to volume change. AVR resulted in immediate changes in structural valve characteristics, alongside a reduced LV longitudinal peak ε and improved coherence between the diastolic and systolic part of the ε-volume loop (all P < 0.05). Follow-up revealed a decrease in LV mass ( P < 0.05) and improvements in LV ejection fraction and LV longitudinal peak ε ( P < 0.05). A significant relationship was present between decline in LV mass during follow-up and post-AVR improvement in coherence of the ε-volume loops ( r = 0.439, P = 0.03), but not with post-AVR changes in aortic valve characteristics or LV function (all P > 0.05). We found that post-AVR improvements in dynamic LV function are related to long-term remodeling of the LV. This highlights the potential importance of assessing dynamic LV function for cardiac adaptations in vivo. NEW & NOTEWORTHY Combining temporal measures of left ventricular longitudinal strain and volume (strain-volume loop) provides novel insights in dynamic cardiac function. In patients with aortic stenosis who underwent aortic valve replacement, postsurgical changes in the strain-volume loop are associated with regression of left ventricular mass during follow-up. This provides novel insight into the relation between postsurgery changes in cardiac hemodynamics and long-term structural remodeling, but also supports the potential utility of the assessment of dynamic cardiac function.
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Affiliation(s)
- Hugo G. Hulshof
- Radboud Institute for Health Sciences, Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Frederieke van Oorschot
- Radboud Institute for Health Sciences, Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Arie P. van Dijk
- Radboud Institute for Health Sciences, Department of Cardiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Maria T. E. Hopman
- Radboud Institute for Health Sciences, Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Keith P. George
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom
| | - David L. Oxborough
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom
| | - Dick H. J. Thijssen
- Radboud Institute for Health Sciences, Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
- Research Institute for Sport and Exercise Sciences, Liverpool John Moores University, Liverpool, United Kingdom
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Broyd CJ, Rigo F, Nijjer S, Sen S, Petraco R, Al-Lamee R, Foin N, Chukwuemeka A, Anderson J, Parker J, Malik IS, Mikhail GW, Francis DP, Parker K, Hughes AD, Mayet J, Davies JE. Regression of left ventricular hypertrophy provides an additive physiological benefit following treatment of aortic stenosis: Insights from serial coronary wave intensity analysis. Acta Physiol (Oxf) 2018; 224:e13109. [PMID: 29935058 DOI: 10.1111/apha.13109] [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] [Received: 03/13/2018] [Revised: 05/28/2018] [Accepted: 05/29/2018] [Indexed: 01/10/2023]
Abstract
AIM Severe aortic stenosis frequently involves the development of left ventricular hypertrophy (LVH) creating a dichotomous haemodynamic state within the coronary circulation. Whilst the increased force of ventricular contraction enhances its resultant relaxation and thus increases the distal diastolic coronary "suction" force, the presence of LVH has a potentially opposing effect on ventricular-coronary interplay. The aim of this study was to use non-invasive coronary wave intensity analysis (WIA) to separate and measure the sequential effects of outflow tract obstruction relief and then LVH regression following intervention for aortic stenosis. METHODS Fifteen patients with unobstructed coronary arteries undergoing aortic valve intervention (11 surgical aortic valve replacement [SAVR], 4 TAVI) were successfully assessed before and after intervention, and at 6 and 12 months post-procedure. Coronary WIA was constructed from simultaneously acquired coronary flow from transthoracic echo and pressure from an oscillometric brachial cuff system. RESULTS Immediately following intervention, a decline in the backward decompression wave (BDW) was noted (9.7 ± 5.7 vs 5.1 ± 3.6 × 103 W/m2 /s, P < 0.01). Over 12 months, LV mass index fell from 114 ± 19 to 82 ± 17 kg/m2 . Accompanying this, the BDW fraction increased to 32.8 ± 7.2% at 6 months (P = 0.01 vs post-procedure) and 34.7 ± 6.7% at 12 months (P < 0.001 vs post-procedure). CONCLUSION In aortic stenosis, both the outflow tract gradient and the presence of LVH impact significantly on coronary haemodynamics that cannot be appreciated by examining resting coronary flow rates alone. An immediate change in coronary wave intensity occurs following intervention with further effects appreciable with hypertrophy regression. The improvement in prognosis with treatment is likely to be attributable to both features.
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Affiliation(s)
| | - Fausto Rigo
- Division of Cardiology; dell'Angelo Hospital; Mestre-Venice Italy
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11
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Asthana N, Mantha A, Yang EH, Suh W, Aksoy O, Shemin RJ, Vorobiof G, Benharash P. Myocardial functional changes in transfemoral versus transapical aortic valve replacement. J Surg Res 2018; 221:304-310. [DOI: 10.1016/j.jss.2017.08.036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 07/19/2017] [Accepted: 08/16/2017] [Indexed: 10/18/2022]
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