Left ventricular muscle mass LVMM) was determined by computed tomography in 19 dogs (33 in vivo and 19 postmortem studies). CT values obtained with 4 models were compared with the actual LVMM at autopsy. Excellent correlation was achieved by volumetric analysis (model A; r = 0.95-0.96). Accurate assessment of LVMM was also obtained using a two-axis method (model B), an area-length method (model C), or a representative cross-sectional volume (model D). There was no significant difference between in vivo and postmortem studies. We conclude that CT can provide reliable estimates of LVMM in vivo. Volumetric analysis is not dependent on mathematical models of the left ventricle. However, this method is very time-consuming. The other CT-models are simple enough to permit clinical application. In comparison with other experimental and clinical methods of LVMM quantitation, CT is superior to chest X-ray, ECG, VCG, and M-mode echocardiography, while similar good results can be obtained with two-dimensional echocardiography as well as conventional and digital angiocardiography.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Left ventricular hypertrophy in young hypertensives: the possible crosstalk of mTOR and angiotensin-II -a case-control study.
BMC Cardiovasc Disord
January 2025
Cardio/Endo-metabolic and Microbiome Research Unit, Department of Physiology, College of Medicine and Health Sciences, Afe Babalola University, Ado-Ekiti, 360101, Nigeria.
Background: Hypertension is a major cause of cardiac dysfunction. The earliest manifestation is left ventricular remodeling/hypertrophy. The occurrence of adverse cardiac remodeling and outcomes occurs irrespective of age in blacks.
View Article and Find Full Text PDFObserver- and sequence variability in personalized 4D flow MRI-based cardiovascular models.
Sci Rep
January 2025
Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden.
Subject-specific parameters in lumped hemodynamic models of the cardiovascular system can be estimated using data from experimental measurements, but the parameter estimation may be hampered by the variability in the input data. In this study, we investigate the influence of inter-sequence, intra-observer, and inter-observer variability in input parameters on estimation of subject-specific model parameters using a previously developed approach for model-based analysis of data from 4D Flow MRI acquisitions and cuff pressure measurements. The investigated parameters describe left ventricular time-varying elastance and aortic compliance.
View Article and Find Full Text PDFEmpagliflozin Ameliorates the Oxidative Stress Profile in Type 2 Diabetic Patients with Heart Failure and Reduced Ejection Fraction: Results of a Randomized, Double-blind, Placebo-controlled Study.
Rev Recent Clin Trials
January 2025
Department of Clinical Pharmacy, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran.
Introduction: In the present study, we evaluated the impact of empagliflozin on serum levels of oxidative stress parameters in individuals with type 2 diabetes (T2DM) who also suffer from heart failure with Reduced Ejection Fraction (HFrEF).
Methods: In this prospective, single-center clinical trial, 80 patients with T2DM and HFrEF, stabilized on guideline-directed heart failure therapy and classified as New York Heart Association functional (NYHA) functional classes II or III, were randomized to receive either empagliflozin (10 mg/daily) or a matching placebo for a duration of 12 weeks. Serum levels of malondialdehyde (MDA), along with the activity of superoxide dismutase (SOD) and glutathione peroxidase (GPx), were measured at baseline and after the 12-week treatment period.
Assessing outcomes of acute myocarditis in Saudi Arabia: A retrospective tertiary center experience.
Saudi Med J
January 2025
From the College of Medicine (Bin Abdu, Assiri, Altasan, Alghamdi, Alshelawy, Alqahtani, Aljabr, Alnahdi, Alhamzani, Alghamdi, Alzahrani, Alshahrani, Alzahrani, Alshalawi), King Saud Bin Abdulaziz University for Health Sciences; from the Department of Medicine (Bin Abdu, Assiri, Altasan, Alghamdi, Alshelawy, Alqahtani, Aljabr, Alnahdi, Alhamzani, Alghamdi, Alzahrani, Alshahrani, Alzahrani, Alshalawi), King Abdullah International Medical Research Center; and from the Emergency Department (Alshalawi), King Abdulaziz Medical City Riyadh, Kingdom of Saudi Arabia.
Objectives: To assess the clinical course and long-term outcomes of complicated and uncomplicated AM in Saudi Arabia. Acute myocarditis (AM) can have different presentations and outcomes based on different factors, one of which is left ventricular ejection fraction (LVEF).
Methods: Data from 382 patients with suspected AM, admitted between January 2016 and October 2023, were reviewed.
Study protocol for an international registry observational study evaluating clinical outcomes of transcatheter versus standard surgical mitral valve operation for secondary mitral regurgitation: the TEERMISO study.
BMJ Open
January 2025
Department of Cardiac Surgery, Assistance Publique-Hôpitaux de Paris, Creteil, France.
Background: Secondary mitral regurgitation (SMR) is a condition affecting the left ventricle (LV) rather than the mitral valve (MV). If the MV remains structurally unchanged, enlargement of the LV or impairment of the papillary muscles can occur. Several mechanical interventions are available to dictate the resolution of MR.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!