The PREVASC study: Prospective REgistry of Valve disease in Asymptomatic Italian elderly SubjeCts

Valvular heart disease (VHD) is the third leading cause of cardiovascular morbidity, with its incidence and public health impact projected to increase significantly. This study adopts a novel perspective, focusing on elderly individuals residing in rural areas, highlighting the unique dynamics of small-town settings.

This multicenter, observational study was conducted from May 2022 to September 2023, under the coordination of the AOU Careggi Echo Core-Lab, which managed the entire screening program. In 10 small Italian villages, each municipality facilitated the enrollment of asymptomatic individuals aged ≥ 65 years, with no prior VHD history, through voluntary participation. Participants were grouped into three age categories (65-69, 70-74, and ≥ 75 years) and underwent a thorough evaluation, including a Quality of Life (QoL) questionnaire and comprehensive echocardiographic assessment focusing on VHD detection and grading.

Among 1,113 participants, the prevalence and severity of VHD showed a significant increase with age (p < 0.0001). Remarkably, 94% of individuals aged ≥ 75 years had at least one valvular defect, with 22.5% presenting moderate or severe valvulopathy, including a prevalence of 4.8% for moderate or severe aortic valve stenosis and 7.5% for mitral regurgitation. Right-sided valvulopathies followed a similar trend, affecting 71.9% of elderly participants. QoL evaluations revealed a generally positive perceived health status, with a mean score of 77 ± 16.

Our registry highlights that the prevalence of VHD in asymptomatic individuals over 65 years living in small Italian communities is substantial, increases with age, and is predominantly degenerative in etiology. Notably, most individuals with undiagnosed VHD perceived themselves as healthy.