Time to telemedicine diagnosis was found to be a useful parameter in assessing the effectiveness of telemedicine in patients who have experienced myocardial infarction, according to a study intended to be presented at the annual meeting of the American College of Cardiology (ACC.20). 

Because traditional metrics do not allow to evaluate the effectiveness of telemedicine, investigators sought to examine the utility of a new parameter, Time to Telemedicine Diagnosis (TTD) within the Latin America Telemedicine Infarct Network, a population-based program for the management of acute myocardial infarction. This network has a hub-and-spoke strategy that operates across Brazil, Colombia, Mexico, and Argentina.

Five critical telemedicine milestones are accounted for by the TTD: transmission of electrocardiogram using cloud computing; filtering and processing at the command site; expert interpretation; generation of Health Insurance Portability and Accountability-compatible results; and report transmission to remote sites.

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In total, 862,542 patients were screened, 9324 of whom were diagnosed with ST-elevation myocardial infarction, 3398 of whom (78.9%) underwent percutaneous coronary intervention. TTD was 3.1 minutes, door-to-balloon was 48 minutes, and in-hospital mortality was 5.2%. Investigators noted a linear correlation between door-to-balloon and TTD.

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”TTD is a sensitive measure of telemedicine performance. Like D2B times, achieving short TTD should be a goal for telemedicine-guided [acute myocardial infarction] management,” concluded the study authors.


Mehta S, Fernandez F, Villagran C, et al. Telemedicine to guide AMI management: Introducing a new metric for evaluating efficiency. Intended to be presented at: American College of Cardiology 69th Annual Scientific Session. March 28-30, 2020; Chicago, IL. Abstract 905-12.

This article originally appeared on The Cardiology Advisor