This case report describes a patient who sustained a post-myocardial infarction ventricular septal defect (VSD) with an associated left ventricular aneurysm who developed cardiogenic shock and required an intra-aortic balloon pump for hemodynamic stabilization. After deployment of a single Amplatzer occluder (AGA Medical), a residual VSD measuring 0.5 cm was noted. Therefore, a second Amplatzer occluder was deployed and a minimal residual VSD remained. The patient remained hemodynamically stable throughout the procedure and was subsequently extubated with removal of intra-aortic balloon pump. Post-discharge, the patient was readmitted with congestive heart failure. A third Amplatzer device was deployed to ameliorate the recurrent VSD shunt. At 9-week follow-up, transthoracic echocardiogram was performed and findings included: 1) left ventricular ejection fraction of 62%; 2) appearance of 3 Amplatzer devices along the interventrcular septum seated well with no motion and residual shunt; 3) moderate diastolic dysfunction with pseudonormal left ventricular filling pattern; and 4) no valvular abnormalities. The patient had increased exercise tolerance with no shortness of breath at rest or with exertion. This case demonstrates the utility and viability of multiple Amplatzer device deployment as a means of repairing a large post-myocardial infarction VSD and recurrent VSDs.
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J Physiol
December 2024
Daniel Baugh Institute for Functional Genomics and Computational Biology, Department of Pathology and Genomic Medicine, Thomas Jefferson University, Philadelphia, PA, USA.
Loss of cardiac physiological function following myocardial infarction (MI) is accompanied by neural adaptations in the baroreflex that are compensatory in the short term, but then become associated with long-term disease progression. One marker of these adaptations is decreased baroreflex sensitivity, a strong predictor of post-MI mortality. The relative contributions of cardiac remodelling and neural adaptation in the sensory, central brainstem and peripheral ganglionic loci to baroreflex sensitivity changes remain underexplored.
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January 2024
Isfahan Cardiovascular Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran.
Background: Patients with ischemic heart disease often exhibit various psychological factors that increase the risk of future cardiovascular events. Therefore, in addition to rehabilitation programs, there is a need for more interventional psychotherapy. Bioenergy Economy-based Health Improvement (BEHI) is a mind-body intervention that may address these issues.
View Article and Find Full Text PDFBMC Cardiovasc Disord
December 2024
Department of Medicine, Aga Khan University Hospital, Karachi, 74800, Pakistan.
Background: Health-related Quality of life (HRQoL) assessment is essential for optimizing patient care, treatment adjustments, and medical decision-making, particularly in post-Myocardial Infarction (MI) patients, but limited data exists on HRQOL post-MI from Pakistan. This study aimed to assess HRQoL and its determinants in the Pakistani population.
Methods: A single-center cross-sectional study was conducted at a tertiary care hospital in Karachi, Pakistan.
Background: Loss of stromal interaction molecule 1 (STIM1) expression in smooth muscle cells protects against ischemia-reperfusion (I/R) injury. Whether and how decreased STIM1 expression in cardiomyocytes (CM) impacts cardiac remodeling in response to I/R injury remains unknown.
Objective: To examine mechanisms by which decreased CM-STIM1 expression in the adult heart modulates cardiac function before and after I/R injury.
Elife
December 2024
Department of Computer Science, University of Oxford, Oxford, United Kingdom.
Sudden death after myocardial infarction (MI) is associated with electrophysiological heterogeneities and ionic current remodelling. Low ejection fraction (EF) is used in risk stratification, but its mechanistic links with pro-arrhythmic heterogeneities are unknown. We aim to provide mechanistic explanations of clinical phenotypes in acute and chronic MI, from ionic current remodelling to ECG and EF, using human electromechanical modelling and simulation to augment experimental and clinical investigations.
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