Dobutamine stress echocardiography in patients with moderate coronary artery disease detected by coronary computed tomography angiography could reduce the rate of unnecessary coronary angiography.

Aims: To test the hypothesis that dobutamine stress echocardiography (DSE) reduces the rate of unnecessary invasive coronary angiography (CA) in patients with chronic stable coronary artery disease (CAD) and moderate to severe stenosis detected by coronary computed tomography angiography (CCTA).

Methods: This study included 49 consecutive, symptomatic CAD patients with coronary lesions greater than 50% detected by CCTA who underwent all DSE and a CA with pressure wire evaluation and FFR measurement. The DSE operators was aware of the CCTA results, but invasive physicians were blinded to DSE results.

Use of electroanatomic voltage mapping to guide lead implantation in young adults with congenital heart disease.

Lead implantation in young adults with congenital heart disease is often problematic due to the reduction in the number of surgical access routes and consequent scar tissue formation related to previous surgery. In such a situation, anatomic and electromagnetic voltage mapping of the heart may be useful to find the optimal implantation site for sensing and pacing activities.