Sherif Negm^1,2, Loic Mace¹, Fedoua El Louali³, Beatrice Desnous⁴, Philipe Aldebert³, Virginie Fouilloux¹, Marien Lenoir^1,*

Congenital Heart Disease, Vol.19, No.3, pp. 267-273, 2024, DOI:10.32604/chd.2024.051642 - 26 July 2024

Abstract The aorto-ventricular tunnel is a rare congenital cardiac anomaly. We present a case of aorto-ventricular tunnel diagnosed via fetal echocardiography. Emergency surgery was performed on the 2nd day of life to close the tunnel, located just in front of the right coronary ostium, due to the patient’s unstable health condition. The postoperative period revealed complete occlusion of the right coronary artery. Due to the patient’s stability, we opted not to reintervene on the right coronary artery. The patient fully recovered without the need for further coronary intervention. In cases of patients with an aorto-ventricular tunnel More >

Wenyuan Chen¹, Tao Zhang², Yantao Yang^1,*

The International Conference on Computational & Experimental Engineering and Sciences, Vol.27, No.3, pp. 1-1, 2023, DOI:10.32604/icces.2023.09754

Abstract Based on the moving-least-squares immersed boundary method, we proposed a new technique to improve the calculation of the volume force representing the body boundary. For boundary with simple geometry, we theoretically analyze the error between the desired volume force at boundary and the actual force applied by the original method. The ratio between the two forces is very close to a constant and exhibits a very narrow distribution. A spatially uniform coefficient is then introduced to correct the force and can be fixed by the least-square method over all boundary markers. Such method is explicit… More >

Irene Martin de Miguel¹, C. Charles Jain¹, Alexander C. Egbe¹, Jason H. Anderson², Heidi M. Connolly¹, William R. Miranda^1,*

Congenital Heart Disease, Vol.17, No.6, pp. 605-615, 2022, DOI:10.32604/chd.2022.023969 - 11 October 2022

Abstract Background: Coarctation of the aorta (CoA) is associated with a generalized arteriopathy and long-term complications despite repair. Data on invasive exercise hemodynamics in this population are lacking. Accordingly, we reviewed adults with CoA undergoing exercise catheterization to assess 1. hemodynamic profile; 2. feasibility for assessment of CoA severity. Methods: Twenty patients undergoing exercise cardiac catheterization (12 arm adduction and 8 supine cycle ergometry) at a quaternary care center between 2004 and 2021 were identified. Resting and exercise hemodynamic data were abstracted from the procedure logs. Results: Mean age was 43.6 ± 12.0 years. Eleven patients (55%) had resting pulmonary… More >

Mohamed Saber Hafez^*, Alaa Roushdy, Dina Ezzeldin

Congenital Heart Disease, Vol.17, No.3, pp. 325-333, 2022, DOI:10.32604/chd.2022.019025 - 03 May 2022

Abstract Background: Coarctation of the aorta is a congenital heart disease that sometimes remains clinically silent until adulthood, usually presenting with arterial hypertension. It is well known that after coarctation treatment, many patients remain hypertensive despite successful repair. In this study we approached the predictors and effects of residual hypertension after successful coarctation therapy. Methods: It was a cross sectional observational study involving 50 patients who underwent Coarctation repair/angioplasty in Ain Shams university hospitals. We divided the patients into two groups (hypertensive and normotensive) and we studied their demographic data (e.g., age, gender, age at first repair,… More >

Maryam Altalhi¹, Sami Ur Rehman², Fakhre Alam², Ala Abdulsalam Alarood³, Amin ur Rehman², M. Irfan Uddin^4,*

Intelligent Automation & Soft Computing, Vol.31, No.2, pp. 961-969, 2022, DOI:10.32604/iasc.2022.020607 - 22 September 2021

Abstract The proper computation of geometric parameters of the aorta and coronary arteries are very important for surgery planning, disease diagnoses, and age-related changes observation in the vessels. The accurate knowledge about the geometry of aorta and coronary arteries is required for the proper investigation of heart related diseases. The geometry of aorta and coronary arteries includes the diameter of the ascending and descending aorta and coronary arteries, length of the coronary arteries, branching angles of the coronary arteries and branching points. These geometric parameters from arteries can be computed from the 3D image data. In… More >

Eva Kapravelou¹, Hugo Issa², Gordon Culham³, Martin Hosking¹, Sanjiv K. Gandhi², Shubhayan Sanatani^1,*

Congenital Heart Disease, Vol.16, No.6, pp. 675-680, 2021, DOI:10.32604/CHD.2021.016548 - 08 July 2021

Abstract A 4-month-old previously healthy baby was found to be in congestive heart failure with LV dysfunction and a right aortic arch with severe coarctation, undetectable by blood pressure measurements. A cardiac CT and central blood pressure led to the diagnosis of a unique anatomic variant of aortic coarctation. Once diagnosed the patient underwent surgery with an uncomplicated recovery. More >

Qingzhuo Chi¹, Huimin Chen¹, Lizhong Mu^1,*, Ying He¹, Yong Luan²

FDMP-Fluid Dynamics & Materials Processing, Vol.17, No.4, pp. 721-743, 2021, DOI:10.32604/fdmp.2021.015200 - 17 May 2021

Abstract Type A aortic dissection (AD) is one of the most serious cardiovascular diseases, whose risk predictors are controversial. The purpose of this research was to investigate how elongation accompanied by dilation of the ascending aorta (AAo) affects the relevant haemodynamic characteristics using image-based computational models. Five elongated AAos with different levels of dilation have been reconstructed based on the centerlines data of an elderly and an AD patient. Numerical simulations have been performed assuming an inflow waveform and a Windkessel model with three elements for all outflow boundaries. The numerical results have revealed that the More >

Masataka Kitano^1,2,*, Kazuto Fujimoto¹, Atsuko Kato¹, Ken-ichi Kurosaki¹, Isao Shiraishi¹

Congenital Heart Disease, Vol.16, No.3, pp. 269-283, 2021, DOI:10.32604/CHD.2021.015308 - 02 March 2021

Abstract Background: Although transcatheter closure of atrial septal defect (ASD) is safe and effective for patients with sufficient rim, ASD patients with absent and/or malaligned aortic and/or superior rim have higher risks of device embolization and cardiac erosion. We have treated such high-risk patients using a Figulla Flex II (FFII) device shaped flared and straddling behind the aorta because this method would avoid such serious complications. However, its long-term efficacy and safety remain unclear. Therefore, the midterm efficacy and safety of this method were studied. Methods: We retrospectively evaluated the outcome of 47 consecutive patients with such… More >

Mohamad Shukri Zakaria^1,*, Haslina Abdullah², Azmi Nordin¹, Syazwati Ahmad Zaki¹

FDMP-Fluid Dynamics & Materials Processing, Vol.17, No.1, pp. 171-179, 2021, DOI:10.32604/fdmp.2021.010974 - 09 February 2021

Abstract This study deals with the interaction of blood flow with the wall aorta, i.e., the boundary of the main artery that transports blood in the human body. The problem is addressed in the framework of computational fluid dynamics complemented with (FSI), i.e., a fluid-structure interaction model. Two fundamental types of wall are considered, namely a flexible and a rigid boundary. The resulting hemodynamic flows are carefully compared in order to determine which boundary condition is more effective in reproducing reality. Special attention is paid to wall shear stress (WSS), a factor known for its ability More >

Ruikun Zou¹, Yifei Wang^1,*, Chengcheng Pang², Yunxia Sun¹, Chen Chen¹, Jian Zhuang³

Congenital Heart Disease, Vol.16, No.2, pp. 159-170, 2021, DOI:10.32604/CHD.2021.015050 - 26 January 2021

Abstract Aim: To determine the profiles of clinical features including four-limb blood pressure (BP), saturations of peripheral oxygen (SpO₂), and echocardiographic features in infants with coarctation of aorta (CoA) to facilitate congenital heart diseases screening. Methods: The charts of infants with CoA were retrospectively reviewed. All in-hospital infants suspected of congenital heart diseases by clinical teams were prospectively measured of four limbs BPs and SpO₂ in a regional cardiac transferring center during 2013 and 2019. Echocardiography as a gold standard test was followed within 2 days after suspicion. All infants were divided into non-significant CoA group or significant… More >