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Karaca Özer P, Ayduk Gövdeli E, Engin B, Atıcı A, Baykız D, Orta H, Demirtakan ZG, Emet S, Elitok A, Tayyareci Y, Umman B, Bilge AK, Buğra Z. Role of global longitudinal strain in discriminating variant forms of left ventricular hypertrophy and predicting mortality. Anatol J Cardiol 2021; 25:863-871. [PMID: 34866580 DOI: 10.5152/anatoljcardiol.2021.21940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
OBJECTIVE In this study, we aimed to compare the functional adaptations of the left ventricle in variant forms of left ventricular hypertrophy (LVH) and to evaluate the use of two-dimensional speckle tracking echocardiography (2D-STE) in differential diagnosis and prognosis. METHODS This was a prospective cohort study of 68 patients with LVH, including 20 patients with non-obstructive hypertrophic cardiomyopathy (HCM), 23 competitive top-level athletes free of cardiovascular disease, and 25 patients with hypertensive heart disease (HHD). All the subjects underwent 2D transthoracic echocardiography (TTE) and 2D-STE. The primary endpoint was all-cause mortality. Global longitudinal strain (GLS) below -12.5% was defined as severely reduced strain, -12.5% to -17.9% as mildly reduced strain, and above -18% as normal strain. RESULTS The mean LV-GLS value was higher in athletes than in patients with HCM and HHD with the lowest value being in the HCM group (HCM: -11.4±2.2%; HHD: -13.6±2.6%; and athletes: -15.5±2.1%; p<0.001 among groups). LV-GLS below -12.5% distinguished HCM from others with 65% sensitivity and 77% specificity [area under curve (AUC)=0.808, 95% confidence interval (CI): 0.699-0.917, p<0.001]. The median follow-up duration was 6.4±1.1 years. Overall, 11 patients (16%) died. Seven of these were in the HHD group, and four were in the HCM group. The mean GLS value in patients who died was -11.8±1.5%. LV-GLS was significantly associated with mortality after adjusting age and sex via multiple analysis (RR=0.723, 95% CI: 0.537-0.974, p=0.033). Patients with GLS below -12.5% had a higher risk of all-cause mortality compared with that of patients with GLS above -12.5% according to Kaplan-Meier survival analysis for 7 years (29% vs. 9%; p=0.032). The LV-GLS value predicts mortality with 64% sensitivity and 70% specificity with a cut-off value of -12.5 (AUC=0.740, 95% CI: 0.617-0.863, p=0.012). CONCLUSION The 2D-STE provides important information about the longitudinal systolic function of the myocardium. It may enable differentiation variable forms of LVH and predict prognosis.
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Affiliation(s)
- Pelin Karaca Özer
- Department of Cardiology, İstanbul Medical Faculty, İstanbul University; İstanbul-Turkey
| | - Elif Ayduk Gövdeli
- Department of Cardiology, İstanbul Medical Faculty, İstanbul University; İstanbul-Turkey
| | - Berat Engin
- Department of Cardiology, Manavgat State Hospital; Antalya-Turkey
| | - Adem Atıcı
- Department of Cardiology, İstanbul Medeniyet University, Göztepe Training and Research Hospital; İstanbul-Turkey
| | - Derya Baykız
- Department of Cardiology, İstanbul Medical Faculty, İstanbul University; İstanbul-Turkey
| | - Hüseyin Orta
- Department of Cardiology, İstanbul Medical Faculty, İstanbul University; İstanbul-Turkey
| | | | - Samim Emet
- Department of Cardiology, İstanbul Medical Faculty, İstanbul University; İstanbul-Turkey
| | - Ali Elitok
- Department of Cardiology, İstinye University, Liv Hospital; İstanbul-Turkey
| | - Yelda Tayyareci
- Department of Cardiology, İstinye University, Liv Hospital; İstanbul-Turkey
| | - Berrin Umman
- Department of Cardiology, İstanbul Medical Faculty, İstanbul University; İstanbul-Turkey
| | - Ahmet Kaya Bilge
- Department of Cardiology, İstanbul Medical Faculty, İstanbul University; İstanbul-Turkey
| | - Zehra Buğra
- Department of Cardiology, İstanbul Medical Faculty, İstanbul University; İstanbul-Turkey
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Galanti G, Toncelli L, Tosi B, Orlandi M, Giannelli C, Stefani L, Mascherini G, Modesti PA. Evaluation of left ventricular remodelling in young Afro-Caribbean athletes. Cardiovasc Ultrasound 2019; 17:20. [PMID: 31630681 PMCID: PMC6802107 DOI: 10.1186/s12947-019-0169-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 09/03/2019] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND Cardiac adaptation to intense physical training is determined by many factors including age, gender, body size, load training and ethnicity. Despite the wide availability of ECG analysis, with a higher presence of abnormalities in different races, echocardiographic studies on young Afro-Caribean (AA) and Caucasian athletes (CA) are lacking in literature. We aimed to assess the effect in the secondary LV remodelling of load training in young AA players compared to matched CA players. METHOD Seventy-seven AA and 53 CA matched soccer players (mean age 17.35 ± 0.50 and 18.25 ± 0.77 y) were enrolled. They were evaluated with echocardiography. A subgroup of 30 AA and 27 CA were followed up for a period of 4 years. The myocardial contractile function was evaluated by speckle-tracking echocardiographic global longitudinal strain (GLS). RESULTS No significant differences were found in weight and height and in blood pressure response to maximal ergometer test in either group. In AA a higher level of LV remodelling, consisting in higher LV wall thickness, higher interventricular septum (IVS) and posterior wall (PW) thickness were found (IVS: 10.04 ± 0.14 and 9.35 ± 0.10 in AA and CA respectively, p < 0.001. PW: 9.70 ± 0.20 and 9.19 ± 0.10 mm in AA and CA respectively, p < 0.05). Strain data showed no significant differences between the two groups (22.35 ± 0.48 and 23.38 ± 0.69 in AA (n = 27) and CA (n = 25), respectively). At the beginning of the follow-up study AA showed a significantly higher left ventricular remodelling (IVS = 9.29 ± 0.3 and 8.53 ± 0.12 mm in AA and CA respectively, p < 0.002. PW = 9.01 ± 0.2 and 8.40 ± 0.20 in AA and CA respectively, p = 0.1). During the next four years of follow-up we observed a regular parallel increase in LV wall thickness and chamber diameters in both groups, proportionally to the increase in body size and LV mass. (IVS = 10.52 ± 0.17 and 9.03 ± 0.22 mm in AA and CA respectively, p < 0.001. PW: 10.06 ± 0.17 and 8.26 ± 0.19 mm in AA and CA respectively, p < 0.001). CONCLUSION The study shows that the ventricular remodelling observed in AA appears to be a specific phenotype already present in pre-adolescence. These data also suggest that genetic/ethnic factors play a central role in left ventricular remodelling during the first years of life in elite athletes.
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Affiliation(s)
- Giorgio Galanti
- Department of Experimental and Clinical Medicine-Sports Medicine and Exercise Unit, University of Florence, AOUC, Careggi, Florence, Italy
| | - Loira Toncelli
- Department of Experimental and Clinical Medicine-Sports Medicine and Exercise Unit, University of Florence, AOUC, Careggi, Florence, Italy
| | - Benedetta Tosi
- Department of Experimental and Clinical Medicine-Sports Medicine and Exercise Unit, University of Florence, AOUC, Careggi, Florence, Italy
| | - Melissa Orlandi
- Department of Experimental and Clinical Medicine-Sports Medicine and Exercise Unit, University of Florence, AOUC, Careggi, Florence, Italy
| | - Chiara Giannelli
- Department of Experimental and Clinical Medicine-Sports Medicine and Exercise Unit, University of Florence, AOUC, Careggi, Florence, Italy
| | - Laura Stefani
- Department of Experimental and Clinical Medicine-Sports Medicine and Exercise Unit, University of Florence, AOUC, Careggi, Florence, Italy
| | - Gabriele Mascherini
- Department of Experimental and Clinical Medicine-Sports Medicine and Exercise Unit, University of Florence, AOUC, Careggi, Florence, Italy
| | - Pietro A. Modesti
- Department of Experimental and Clinical Medicine-Sports Medicine and Exercise Unit, University of Florence, AOUC, Careggi, Florence, Italy
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Abstract
Obstructive sleep apnea (OSA) is common among patients with cardiac rhythm disorders. OSA may contribute to arrhythmias due to acute mechanisms, such as generation of negative intrathoracic pressure during futile efforts to breath, intermittent hypoxia, and surges in sympathetic activity. In addition, OSA may lead to heart remodeling and increases arrhythmia susceptibility. Atrial distension and remodeling, that has been shown to be associated with OSA, is a well-known anatomical substrate for atrial fibrillation (AF). AF is the arrhythmia most commonly described in patients with OSA. Several observational studies have shown that the treatment of OSA with continuous positive airway pressure (CPAP) reduces recurrence of AF after electrical cardioversion and catheter ablation. There is also evidence that nocturnal hypoxemia, a hallmark of OSA, predicts sudden cardiac death (SCD) independently of well-established cardiovascular risk factors. Among patients with an implantable cardiac defibrillator, those with OSA have a higher risk of receiving treatment for life-threatening arrhythmias. Nocturnal hypoxemia may also increase vagal tone, which increases susceptibility to bradycardic and conduction rhythm disorders that have also been described in patients with OSA. In conclusion, there are several biological pathways linking OSA and increased cardiac arrhythmogenesis propensity. However, the independent association is derived from observational studies and the direction of the association still needs clarification due to the lack of large clinical trials. This review focuses on the current scientific evidence linking OSA to cardiac rhythm disorders and point out future directions.
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Affiliation(s)
- Glaucylara Reis Geovanini
- Sleep Laboratory, Pulmonary Division, Heart Institute (InCor), Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil.,Genetics and Molecular Cardiology Laboratory, Heart Institute (InCor), Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
| | - Geraldo Lorenzi-Filho
- Sleep Laboratory, Pulmonary Division, Heart Institute (InCor), Hospital das Clinicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, Brazil
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Melo S, da Silva Júnior N, Barauna V, Oliveira E. Cardiovascular Adaptations Induced by Resistance Training in Animal Models. Int J Med Sci 2018; 15:403-410. [PMID: 29511376 PMCID: PMC5835711 DOI: 10.7150/ijms.23150] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 12/05/2017] [Indexed: 02/06/2023] Open
Abstract
In the last 10 years the number of studies showing the benefits of resistance training (RT) to the cardiovascular system, have grown. In comparison to aerobic training, RT-induced favorable adaptations to the cardiovascular system have been ignored for many years, thus the mechanisms of the RT-induced cardiovascular adaptations are still uncovered. The lack of animal models with comparable protocols to the RT performed by humans hampers the knowledge. We have used squat-exercise model, which is widely used by many others laboratories. However, to a lesser extent, other models are also employed to investigate the cardiovascular adaptations. In the subsequent sections we will review the information regarding cardiac morphological adaptations, signaling pathway of the cardiac cell, cardiac function and the vascular adaptation induced by RT using this animal model developed by Tamaki et al. in 1992. Furthermore, we also describe cardiovascular findings observed using other animal models of RT.
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Affiliation(s)
- S.F.S. Melo
- Laboratory of Molecular Physiology, Health Sciences Center, Federal University of Espírito Santo. Address: Av. Marechal Campos, 1468 Maruípe, Espírito Santo, Vitória, Brazil. Postal code: 29043900. Telephone number: (5527)996892407
- Laboratory of Biochemistry and Molecular Biology of Exercise, School of Physical Education and Sport, University of São Paulo. Address: Av. Prof. Mello Moraes, 65, Cidade Universitária, São Paulo, São Paulo, Brazil. Postal code: 05508-9000. Telephone number: (5511) 30913136
| | - N.D. da Silva Júnior
- Laboratory of Biochemistry and Molecular Biology of Exercise, School of Physical Education and Sport, University of São Paulo. Address: Av. Prof. Mello Moraes, 65, Cidade Universitária, São Paulo, São Paulo, Brazil. Postal code: 05508-9000. Telephone number: (5511) 30913136
| | - V.G. Barauna
- Laboratory of Molecular Physiology, Health Sciences Center, Federal University of Espírito Santo. Address: Av. Marechal Campos, 1468 Maruípe, Espírito Santo, Vitória, Brazil. Postal code: 29043900. Telephone number: (5527)996892407
| | - E.M. Oliveira
- Laboratory of Biochemistry and Molecular Biology of Exercise, School of Physical Education and Sport, University of São Paulo. Address: Av. Prof. Mello Moraes, 65, Cidade Universitária, São Paulo, São Paulo, Brazil. Postal code: 05508-9000. Telephone number: (5511) 30913136
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