Publications by authors named "Israel Valverde Perez"
Introduction: Infections in cardiac implantable electronic devices (CIED) are increasing over time and associated with substantially mortality and healthcare costs. The best approach is the complete removal of the system by transvenous lead extraction (TLE). However, when leads are more than 10 years old, this technique requires considerable expertise and failures with the result of abandoned leads or serious complications may occur.
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- Adult Fontan patients (FPs) can maintain normal cardiac output at rest, but their exercise capacity is limited due to unique circulatory challenges, as shown in a study of 37 FPs and 19 healthy controls.
- The study found that FPs had a mean peak oxygen uptake (peakVO) of 21 mL/kg/min, which is only 55% of the predicted value, with significant factors influencing their functional capacity including abnormal pulse patterns and chronotropic insufficiency.
- Increased physical activity correlates positively with improved functional capacity in FPs, although they experience inspiratory muscle weakness; as activity level rises, their peakVO% predicted also increases, suggesting regular exercise benefits their overall workout capacity.
Article Synopsis
- Malformation of the right atrium is a rare condition that generally occurs alone and is not commonly discussed in medical literature.
- A case of prenatal giant atrial dilatation in an infant, who showed no symptoms initially, resulted in surgical intervention at 18 months to prevent complications like thrombosis and arrhythmias.
- Post-surgery, the infant still showed signs of elevated pressure in the atrium, indicating that the right atrial dilatation may be linked to an underlying restrictive issue in the right ventricle.
Article Synopsis
- A novel passive tracking technique called partial saturation (pSAT) is introduced to improve the visualization of gadolinium-filled balloon catheters during cardiovascular magnetic resonance imaging (CMR) for patients with congenital heart disease (CHD).
- The pSAT method was tested in healthy subjects and two patients, showing superior contrast and signal-to-noise ratios compared to conventional imaging techniques.
- Results indicated that using a pSAT angle between 20° to 40° allowed for effective simultaneous imaging of the catheter and surrounding cardiovascular anatomy, making it suitable for CMR-guided procedures in over 93% of cases.
Aims: Coronary artery fistulae represent one of the most challenging anatomical defects to define accurately. We aimed to investigate the additional benefit conferred by volume rendering of tomographic images and 3D printing for diagnosis and interventional planning.
Methods And Results: Four cases of coronary fistulae were considered for transcatheter closure.
Article Synopsis
- Percutaneous pulmonary valvuloplasty is the preferred method for treating pulmonary valve stenosis, particularly in children, and this study aimed to evaluate its effectiveness and long-term outcomes.
- The study involved 53 patients, assessing their heart function and valve performance over a median follow-up period of 15 years; it found a significant decrease in transvalvular pressure gradients and low rates of complications.
- Results indicated that most patients experienced some degree of late pulmonary regurgitation, but overall, the procedure was successful with minimal long-term issues, and no patients required further surgery.