Through telemedicine, advantageous telediagnostic systems can be developed to improve the health care of populations that do not have access to specialists. However, evidence on how such innovation technology can enhance the countrywide electrocardiographic (EKG) screening to support a prevention program for cardiovascular diseases is limited. The usability of telemedicine to improve the countrywide detection of heart diseases according to the national cardiovascular disease prevention program in Paraguay was investigated.

This cross-sectional survey included adults (≥19 and ≤ 80 years) and children (≥1 and ≤ 18 years) with medical prescription. The study was carried out by the Telemedicine Unit of the Ministry of Public Health and Social Welfare (MSPBS) in collaboration with the Department of Biomedical Engineering and Imaging of the Health Science Research Institute (IICS-UNA) to evaluate the utility of a telediagnostic net for detection and prevention program of cardiovascular disease in public health. For this purpose, the results obtained by the EKG telediagnosis net implemented in sixty countrywide public hospitals were analyzed and verified the adherence to the cardiovascular prevention program.

A total of 246,217 remote EKG diagnoses were performed between January 2014 and August 2018. Of the total, 80.6 percent (198,494) corresponded to adults and 19.4 percent (47,723) to children. The adult diagnoses were mainly normal (66.3 percent), sinus bradycardia (11.2 percent), right bundle branch block (4.8 percent), left ventricular hypertrophy (4.7 percent), ventricles repolarization disorder (4.4 percent), sinus tachycardia (4,4 percent), ischemia (1.7 percent), atrial fibrillation (1.1 percent), left bundle branch block (0.7 percent), and unspecified arrhythmias (0.6 percent). The children's diagnoses were mainly normal (79.4 percent), sinus bradycardia (10.6 percent), sinus tachycardia (3,2 percent), unspecified arrhythmias (2.8 percent), right bundle branch block (1.9 percent), left ventricular hypertrophy (1.0 percent), left bundle branch block (0.4 percent), ventricles repolarization disorder (0.3 percent), and atrial fibrillation (0.2 percent). The mean adherence rate to the prevention program was 2.3 between 2014 and 2018 for each thousand diagnosis performed.

The results show that the telemedicine can enhance significantly the EKG screening to support a prevention program for cardiovascular diseases and health programs. However, before carrying out its systematic implementation, a contextualization with the regional epidemiological profile must be performed.