Home electrocardiogram telemonitoring for post-acute myocardial infarction care: a randomized controlled trial

Area of Science:

• Cardiology
• Medical Devices
• Telemedicine

Background:

• Patients with acute myocardial infarction (AMI) have a high risk of recurrent cardiovascular events and rehospitalization.
• The effectiveness of telemedicine devices like SmartHeart in managing AMI patients post-discharge in the US remains largely untested.

Purpose of the Study:

• To evaluate the impact of the SmartHeart 12-lead electrocardiogram (ECG) telemedicine device on healthcare utilization in US patients following an acute myocardial infarction.

Main Methods:

• A randomized controlled trial (RCT) was conducted with AMI patients randomized to standard care or standard care plus the SmartHeart device.
• The primary endpoint was the rate of emergency department (ED) visits, hospital readmissions, and cardiovascular testing within 90 days post-discharge.
• Intention-to-treat and per-protocol analyses were performed.

Main Results:

• No significant difference in the primary endpoint was observed between the control and intervention groups in the intention-to-treat analysis (59% vs. 63%, P=0.61).
• Low adherence to device use was noted, with only 24% of the intervention group using the device post-discharge.
• Among device users, ED presentations were significantly lower (8.0% vs. 29%, P=0.04).
• Per-protocol analysis indicated that proper device use reduced inappropriate and increased appropriate ED presentations.

Conclusions:

• While the intention-to-treat analysis showed no significant benefit, the per-protocol analysis suggests that appropriate use of the SmartHeart ECG device, coupled with telemedicine support, can optimize emergency department utilization for AMI survivors.