Dual-Chamber and VVI Implantable Defibrillator. A multicenter study comparing dual-chamber (DDDR) implantable cardioverter-defibrillator (ICD) therapy with single-chamber (VVI) ICD therapy in patients with low ejection fractions (40%) and standard ICD indications.
Art is a diverse range of human activities in creating visual, auditory or performing artifacts (artworks), expressing the author's imaginative or technical skill, intended to be appreciated for their beauty or emotional power.
Art tourism is a term that is used when people travel in order to visit, explore and engage in activities related to art. It includes traveling to art festivals, concerts, win â¦ e and cuisine events, to explore famous museums, etc. + 10 others found this useful.