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Elsouri KN, Camacho Ramos J, Stepanek K, Turan A, Kesselman MM, Demory ML. Adult Onset Hypertrophic Cardiomyopathy (HCM) Not Detected by Echocardiogram: A Case Presentation. Cureus 2023; 15:e45932. [PMID: 37885492 PMCID: PMC10599216 DOI: 10.7759/cureus.45932] [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: 10/16/2022] [Accepted: 09/25/2023] [Indexed: 10/28/2023] Open
Abstract
Hypertrophic cardiomyopathy (HCM) is a genetic myocardial disease of the sarcomere protein. The age of diagnosis of HCM tends to be between the second to third decades of life. However, the recent occurrence of HCM in the fifth and sixth decades of life has been seen in an increasing number of cases. In all cases, a transthoracic echocardiogram (TTE) is considered the gold standard of imaging. Here, we present a case of a 54-year-old Caucasian male who presented to the emergency department (ED) with dyspnea while on vacation. An electrocardiogram (ECG) taken at the time did not suggest any abnormalities. After returning home, a stress test conducted indicated left anterior descending (LAD) artery stenosis. Following treatment, symptoms improved temporarily but eventually came back. Repeat ECGs and TTEs done over the next two years indicated grade II diastolic dysfunction and mild left ventricular hypertrophy, which led to changes in the medication regime. Nevertheless, his condition progressively deteriorated over time. Repeat appearances to the ED led to the utilization of magnetic resonance imaging (MRI) to assess cardiac morphology function and velocity flow. The results were consistent with HCM. This case presents a unique obstacle for the diagnosis of adult-onset HCM. The change made to his medication regimen seemingly aggravated the patients' condition. This case highlights the need for further imaging, beyond the gold standard, in adult males with repeated complaints of dyspnea on exertion (DOE).
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Affiliation(s)
- Kawther N Elsouri
- Osteopathic Medicine, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Fort Lauderdale, USA
| | - Jerry Camacho Ramos
- General Practice, Nova Southeastern University Dr. Kiran C. Patel College of Allopathic Medicine, Fort Lauderdale, USA
| | - Kevin Stepanek
- Internal Medicine, Trinity Health Oakland Hospital, Pontiac, USA
| | - Aydin Turan
- Internal Medicine, Trinity Health Oakland Hospital, Pontiac, USA
| | - Marc M Kesselman
- Rheumatology, Nova Southeastern University Dr. Kiran C. Patel College of Osteopathic Medicine, Fort Lauderdale, USA
| | - Michelle L Demory
- Microbiology and Immunology, Nova Southeastern University Dr. Kiran C. Patel College of Allopathic Medicine, Fort Lauderdale, USA
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Shimahara Y, Honda S, Fujiyoshi T, Kamiya K, Nakano Y, Komatsu I, Yamashita J, Ogino H. Preoperative planning for transaortic septal myectomy using cardiac computed tomography in patients with subaortic septal hypertrophy associated with aortic stenosis: case series. Eur Heart J Case Rep 2023; 7:ytad276. [PMID: 37681057 PMCID: PMC10481893 DOI: 10.1093/ehjcr/ytad276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Revised: 01/17/2023] [Accepted: 06/22/2023] [Indexed: 09/09/2023]
Abstract
Background Electrocardiogram-gated cardiac computed tomography (CT) imaging enables a more accurate understanding of the patient's cardiac anatomy. Preoperative planning for transaortic septal myectomy (TASM), based on cardiac CT, may be useful in patients with subaortic septal hypertrophy associated with severe aortic stenosis (AS). Case summary Two elderly patients (age >80 years) with subaortic septal hypertrophy associated with AS underwent surgical aortic valve replacement (SAVR) and concomitant TASM after preoperative planning based on cardiac CT. Both patients showed subaortic septal hypertrophy with blood flow acceleration, left ventricular (LV) hypercontractility, and a short distance from the coaptation point of the mitral valve to the septum, resulting in possible dynamic LV outflow tract (LVOT) obstruction after resolution of AS. Optimal mid-diastolic images, selected from the 70-80% phase, were used for preoperative TASM planning. Planned sizes for myectomy based on multi-planar reconstruction were 10 × 26 × 9 mm (width × length × depth) and 10 × 25 × 9 mm for patient 1 and 2, respectively, while resected tissue size was 10 × 24 × 8 mm and 9 × 24 × 8 mm in patient 1 and 2, respectively. After TASM procedure, SAVR was performed with bioprosthetic valve. Postoperative course of both patients was uneventful with no evidence of complete atrioventricular block, septal perforation, or blood flow acceleration at the LVOT. Discussion Preoperative planning based on cardiac CT images is safe and useful for guiding adequate myectomy and preventing associated complications in patients with subaortic septal hypertrophy associated with AS.
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Affiliation(s)
- Yusuke Shimahara
- Department of Cardiovascular Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, 160-0023, Japan
| | - Sayaka Honda
- Department of Cardiovascular Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, 160-0023, Japan
| | - Toshiki Fujiyoshi
- Department of Cardiovascular Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, 160-0023, Japan
| | - Kentaro Kamiya
- Department of Cardiovascular Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, 160-0023, Japan
| | - Yu Nakano
- Department of Cardiovascular Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, 160-0023, Japan
| | - Ikki Komatsu
- Department of Cardiology, Tokyo Medical University, Tokyo, Japan
| | - Jun Yamashita
- Department of Cardiology, Tokyo Medical University, Tokyo, Japan
| | - Hitoshi Ogino
- Department of Cardiovascular Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, 160-0023, Japan
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Tao J, Duan F, Long J, Meng Q, Zhang B, Zhu Z, Wang H. The Role of the Submitral Apparatus in Hypertrophic Obstructive Cardiomyopathy. J Am Soc Echocardiogr 2023; 36:133-145. [PMID: 36191671 DOI: 10.1016/j.echo.2022.09.018] [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: 04/28/2022] [Revised: 07/14/2022] [Accepted: 09/25/2022] [Indexed: 02/06/2023]
Abstract
Hypertrophic cardiomyopathy (HCM) is the most common genetic cardiovascular disease, is characterized by unexplained hypertrophy of any myocardial segment, and has a prevalence of 0.2% to 0.5% among the general population. As one of the phenotypes of hypertrophic cardiomyopathy, left ventricular outflow tract obstruction (LVOTO) is associated with high morbidity and mortality, including cardiac death. The integration of various factors, including septal hypertrophy, malformation of the mitral valve apparatus, and an anomalous mitral subvalvular apparatus, may contribute to the occurrence of LVOTO. Previous studies have thoroughly discussed the role of the mitral valve in the mechanisms of systolic anterior motion and LVOTO. Recent studies have shown the importance of determining the potential mechanism of the submitral apparatus in inducing systolic anterior motion and LVOTO. The authors review recent advances in knowledge regarding the submitral apparatus of patients with hypertrophic cardiomyopathy.
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Affiliation(s)
- Jia Tao
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Fujian Duan
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China; Department of Anesthesiology, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jili Long
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Qinglong Meng
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bing Zhang
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhenhui Zhu
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hao Wang
- Department of Echocardiography, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Andrushchuk U, Niavyhlas A, Shchatsinka M. Left ventricle remodeling after septal myectomy surgery, "septal band" theory, and "virtual" myectomy concept introduction. JTCVS Tech 2022; 16:68-69. [PMID: 36510549 PMCID: PMC9735315 DOI: 10.1016/j.xjtc.2022.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Affiliation(s)
- Uladzimir Andrushchuk
- Department of Cardiac Surgery, Republican Scientific and Practical Centre “Cardiology”, Minsk, Belarus
| | - Artsem Niavyhlas
- Department of Cardiac Surgery, Republican Scientific and Practical Centre “Cardiology”, Minsk, Belarus
| | - Mikalai Shchatsinka
- Cardiothoracic Surgery Department, University Hospital Southampton NHS Foundation Trust, Southampton General Hospital, Southampton, United Kingdom
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Stöllberger C. Muscle bundles in hypertrophic cardiomyopathy: wallflowers seem to gain in importance. Eur Heart J Cardiovasc Imaging 2021; 23:1027-1028. [PMID: 34747441 DOI: 10.1093/ehjci/jeab232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Accepted: 10/19/2021] [Indexed: 11/13/2022] Open
Affiliation(s)
- Claudia Stöllberger
- Second Medical Department, Klinik Landstrasse, Juchgasse 25, A-1030 Wien, Austria
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