PT - JOURNAL ARTICLE AU - Igor Diemberger AU - Beatrice Gardini AU - Cristian Martignani AU - Matteo Ziacchi AU - Alessandro Corzani AU - Mauro Biffi AU - Giuseppe Boriani TI - Holter ECG for pacemaker/defibrillator carriers: what is its role in the era of remote monitoring? AID - 10.1136/heartjnl-2015-307614 DP - 2015 Aug 15 TA - Heart PG - 1272--1278 VI - 101 IP - 16 4099 - http://heart.bmj.com/content/101/16/1272.short 4100 - http://heart.bmj.com/content/101/16/1272.full SO - Heart2015 Aug 15; 101 AB - Nowadays several diagnostic tools are available to investigate cardiovascular symptoms like palpitations, dizziness and syncope: ECG Holter (or ambulatory ECG, AECG), external and implantable event/loop recorders. Despite this technological burden, many diagnoses are still missed. In the meantime, we are facing an increasing use of implantable devices for cardiac pacing/defibrillation (CIED), which have rapidly evolved from simple pacing/shock boxes to devices including several diagnostic features. However, these functions are not adequately exploited in current clinical practice and several redundant diagnostic tests, like AECG, are still prescribed to CIED carriers, leading to an increase of costs and a delay in final diagnosis. This review is aimed at identifying the current role of AECG in CIED carriers in view of this technological improvement. First, we will briefly present the indications for AECG according to current guidelines. We will then provide a direct comparison of the different diagnostic features provided by AECG (and event/loop recorders) versus automatic diagnostic CIED to highlight the respective pros and cons. This will serve to carefully discuss these indications in view of the results of recent studies on CIED carriers, highlighting the need for proper implantation and follow-up. Eventually, we will provide useful hints to properly analyse AECG in CIED carriers, considering the different behaviours according to the implemented algorithms. We will conclude by suggesting updated indications for AECG.