scholarly journals Redox Biology of Right-Sided Heart Failure

Antioxidants ◽  
2018 ◽  
Vol 7 (8) ◽  
pp. 106 ◽  
Author(s):  
Nataliia Shults ◽  
Oleksiy Melnyk ◽  
Dante Suzuki ◽  
Yuichiro Suzuki
Keyword(s):  
Oxidative Stress ◽  
Heart Failure ◽  
Congenital Heart Disease ◽  
Pulmonary Hypertension ◽  
Congenital Heart ◽  
Therapeutic Strategies ◽  
Redox Biology ◽  
Blood Pressures ◽  
The Right ◽  
And Function

Right-sided heart failure is the major cause of death among patients who suffer from various forms of pulmonary hypertension and congenital heart disease. The right ventricle (RV) and left ventricle (LV) originate from different progenitor cells and function against very different blood pressures. However, differences between the RV and LV formed after birth have not been well defined. Work from our laboratory and others has accumulated evidence that redox signaling, oxidative stress and antioxidant regulation are important components that define the RV/LV differences. The present article summarizes the progress in understanding the roles of redox biology in the RV chamber-specificity. Understanding the mechanisms of RV/LV differences should help develop selective therapeutic strategies to help patients who are susceptible to and suffering from right-sided heart failure. Modulations of redox biology may provide effective therapeutic avenues for these conditions.

scholarly journals Is it possible to operate four heart valves in a patient with heart failure, congenital heart disease and pulmonary hypertension?

Cor et Vasa ◽  
2012 ◽  
Vol 54 (9-10) ◽  
pp. e295-e299 ◽  
Author(s):  
Marie Zvěřinová ◽  
Jana Popelová ◽  
Petr Pavel ◽  
Roman Gebauer ◽  
Pavel Jehlička ◽  
...  
Keyword(s):  
Heart Failure ◽  
Congenital Heart Disease ◽  
Pulmonary Hypertension ◽  
Heart Disease ◽  
Congenital Heart ◽  
Heart Valves

scholarly journals Predictor factors of pulmonary hypertension in children with left-to-right shunting in acyanotic congenital heart disease

2021 ◽  
Vol 61 (3) ◽  
pp. 119-24
Author(s):  
Weny Inrianto ◽  
Indah Kartika Murni ◽  
Ida Safitri
Keyword(s):  
Heart Failure ◽  
Congenital Heart Disease ◽  
Pulmonary Hypertension ◽  
Heart Disease ◽  
Iron Deficiency ◽  
Congenital Heart ◽  
Septal Defect ◽  
Deficiency Anemia ◽  
Acyanotic Congenital Heart Disease ◽  
Hypertension In Children

Background Left-to-right shunting in acyanotic congenital heart disease (CHD) is the most common type of defect in childhood heart disease. Limited access to specialist health services causes delays in CHD management. In limited resource settings, identification of factors that influence the occurrence of pulmonary hypertension is important in order to decide which patients should be prioritized for defect closure to prevent further complications. Objective To determine predictive factors of pulmonary hypertension after a left-to-right shunt CHD diagnosis. Methods This retrospective cohort study included children aged 1 month to 17 years with isolated atrial septal defect, or ventricular septal defect, or patent ductus arteriosus. Potential predictors studied were iron deficiency anemia, mitral regurgitation, pneumonia, and heart failure. Bivariate analysis was done with Chi-square test and multivariate analysis was done with Cox regression to determine the hazard ratio. Results Pulmonary hypertension occurred in 68 of 176 subjects. Iron deficiency anemia, mitral regurgitation, and pneumonia were not predictives of pulmonary hypertension. However, heart failure was a significant predictive factor for pulmonary hypertension, with a hazard ratio of 4.1 (95%CI 2.2 to 7.5; P=0.001). Conclusions Heart failure is a predictive factor of pulmonary hypertension in children with left-to-right shunting in acyanotic CHD.

scholarly journals Genetic Analysis of Right Heart Structure and Function in 40,000 People

2021 ◽  
Author(s):  
James P. Pirruccello ◽  
Paolo Di Achille ◽  
Victor Nauffal ◽  
Mahan Nekoui ◽  
Samuel N. Friedman ◽  
...  
Keyword(s):  
Pulmonary Hypertension ◽  
Deep Learning ◽  
Right Ventricular ◽  
Congenital Heart ◽  
Left Ventricular ◽  
Structure And Function ◽  
Right Heart ◽  
Heart Chamber ◽  
The Right ◽  
And Function

The heart evolved hundreds of millions of years ago. During mammalian evolution, the cardiovascular system developed with complete separation between pulmonary and systemic circulations incorporated into a single pump with chambers dedicated to each circulation. A lower pressure right heart chamber supplies deoxygenated blood to the lungs, while a high pressure left heart chamber supplies oxygenated blood to the rest of the body. Due to the complexity of morphogenic cardiac looping and septation required to form these two chambers, congenital heart diseases often involve maldevelopment of the evolutionarily recent right heart chamber. Additionally, some diseases predominantly affect structures of the right heart, including arrhythmogenic right ventricular cardiomyopathy (ARVC) and pulmonary hypertension. To gain insight into right heart structure and function, we fine-tuned deep learning models to recognize the right atrium, the right ventricle, and the pulmonary artery, and then used those models to measure right heart structures in over 40,000 individuals from the UK Biobank with magnetic resonance imaging. We found associations between these measurements and clinical disease including pulmonary hypertension and dilated cardiomyopathy. We then conducted genome-wide association studies, identifying 104 distinct loci associated with at least one right heart measurement. Several of these loci were found near genes previously linked with congenital heart disease, such as NKX2-5, TBX3, WNT9B, and GATA4. We also observed interesting commonalities and differences in association patterns at genetic loci linked with both right and left ventricular measurements. Finally, we found that a polygenic predictor of right ventricular end systolic volume was associated with incident dilated cardiomyopathy (HR 1.28 per standard deviation; P = 2.4E-10), and remained a significant predictor of disease even after accounting for a left ventricular polygenic score. Harnessing deep learning to perform large-scale cardiac phenotyping, our results yield insights into the genetic and clinical determinants of right heart structure and function.

scholarly journals Adult congenital heart disease and the COVID-19 pandemic

Heart ◽  
2020 ◽  
Vol 106 (17) ◽  
pp. 1302-1309 ◽  
Author(s):  
Robert M Radke ◽  
Tim Frenzel ◽  
Helmut Baumgartner ◽  
Gerhard-Paul Diller
Keyword(s):  
Heart Failure ◽  
Congenital Heart Disease ◽  
Pulmonary Hypertension ◽  
Heart Disease ◽  
High Risk ◽  
Congenital Heart ◽  
Pragmatic Approach ◽  
Right Heart ◽  
High Risk Patients ◽  
Risk Patients

Adults with congenital heart disease (ACHD) may be at high risk in the case of COVID-19. Due to the heterogeneity of ACHD and secondary complications, risk profiles are, however, not uniform. This document aims to give an overview of relevant data and outline our pragmatic approach to disease prevention and management. Based on anatomy and additional physiological factors including symptoms, exercise capacity, heart failure, pulmonary hypertension and cyanosis, we propose a pragmatic approach to categorising patients into low-risk, intermediate-risk and high-risk groups. We regard especially patients with complex cyanotic conditions, those with palliated univentricular hearts, heart failure, severe valvular disease or pulmonary hypertension as high-risk patients. To avoid infection, we recommend self-isolation and exemption from work for these cohorts. Infected ACHD patients with low or moderate risk and without signs of deterioration may be remotely followed and cared for at home while in self isolation. High-risk patients or those with signs of respiratory or cardiovascular impairment require admission ideally at a tertiary ACHD centre. Especially patients with complex, cyanotic disease, heart failure and arrhythmias require particular attention. Treatment in patients with cyanotic heart disease should be guided by the relative degree of desaturation compared with baseline and lactate levels rather than absolute oxygen saturation levels. Patients with right heart dilatation or dysfunction are potentially at increased risk of right heart failure as mechanical ventilation and acute respiratory distress syndrome can lead to increase in pulmonary arterial pressures.

Hospitalisations for heart failure predict mortality in pulmonary hypertension related to congenital heart disease

Heart ◽  
2018 ◽  
Vol 105 (6) ◽  
pp. 465-469 ◽  
Author(s):  
Despoina Ntiloudi ◽  
Sotiria Apostolopoulou ◽  
Konstantinos Vasiliadis ◽  
Alexandra Frogoudaki ◽  
Aphrodite Tzifa ◽  
...  
Keyword(s):  
Heart Failure ◽  
Congenital Heart Disease ◽  
Pulmonary Hypertension ◽  
Heart Disease ◽  
Congenital Heart ◽  
Cox Regression ◽  
Strong Predictor ◽  
Adult Congenital Heart Disease ◽  
Significant Proportion ◽  
Cox Regression Analysis

ObjectiveDespite the progress in the management of patients with adult congenital heart disease (ACHD), a significant proportion of patients still develop pulmonary hypertension (PH). We aimed to highlight the rate of the complications in PH-ACHD and the predicting factors of cumulative mortality risk in this population.MethodsData were obtained from the cohort of the national registry of ACHD in Greece from February 2012 until January 2018.ResultsOverall, 65 patients receiving PH-specific therapy were included (mean age 46.1±14.4 years, 64.6% females). Heavily symptomatic (New York Heart Association (NYHA) class III/IV) were 53.8% of patients. The majority received monotherapy, while combination therapy was administered in 41.5% of patients. Cardiac arrhythmia was reported in 30.8%, endocarditis in 1.5%, stroke in 4.6%, pulmonary arterial thrombosis in 6.2%, haemoptysis in 3.1% and hospitalisation due to heart failure (HF) in 23.1%. Over a median follow-up of 3 years (range 1–6), 12 (18.5%) patients died. On univariate Cox regression analysis history of HF hospitalisation emerged as a strong predictor of mortality (HR 8.91, 95% CI 2.64 to 30.02, p<0.001), which remained significant after adjustment for age and for NYHA functional class.ConclusionsLong-term complications are common among patients with PH-ACHD. Hospitalisations for HF predict mortality and should be considered in the risk stratification of this population.

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