Radionuclide cardiac stress testing

To briefly review the field of radionuclide stress imaging, including recent technologic advances and clinical applications. ECG gating and attenuation correction help increase specificity and accuracy of myocardial single-photon emission computed tomography (SPECT) imaging. Furthermore, advances in camera hardware and software enable more rapid image acquisition and/or radiation dose reduction. Position emission tomography (PET) and hybrid imaging with computer tomography (CT) are emerging technologies which provide improved image resolution and complementary anatomical data. Nuclear cardiology also demonstrates a wide variety of prognostic applications for a diverse group of patient subgroups. More judicious use of SPECT technology using application of the recently updated appropriateness criteria is encouraged. Radionuclide stress imaging provides essential clinical information and has clear impact on patient assessment and management

Retrograde Percutaneous Closure of a Ventricular Septal Defect after Myectomy for Hypertrophic Obstructive Cardiomyopathy

In patients with hypertrophic obstructive cardiomyopathy, hemodynamically significant ventricular septal defect after septal myectomy is a rare sequela that warrants closure. Percutaneous closure provides a safer alternative to repeated sternotomy, which is associated with significant morbidity and mortality rates. We report a possibly unique case of successful retrograde percutaneous closure, with an AMPLATZER Muscular VSD Occluder, of an iatrogenic ventricular septal defect consequent to surgical therapy for hypertrophic obstructive cardiomyopathy

Hemodynamic support in high-risk percutaneous coronary interventions and cardiogenic shock

Over the last 50 years there have been rapid advances in the development of ventricular assist devices in the cardiac catheterization laboratory. An ideal device is one that is easy to insert, simple to use, provides effective support, is associated with minimal complications and provides a morbidity and mortality benefit for the patient. In this article we will review the currently available percutaneous left ventricular assist devices and the evidence to support their use