Metanalyse: Vergleich smartEKG und LZ-EKG

Ramkumar S et al.: Atrial fibrillation detection using single lead portable electrocardiographic monitoring: a systematic review and meta-analysis. BMJ Open 8 (2018):e024178.
doi:10.1136/ bmjopen-2018-024178
Metaanalyse von 18 Studien mit intermittierenden 1-Kanal-EKG-Registrierungen (117.436 Probanden) und 36 Studien mit LZ-EKG-Registrierungen (8498 Probanden) zur Detektion von Vorhofflimmern. Die Detektionsrate von Vorhofflimmern in acht Studien mit wdh. 1-Kanal-Aufzeichnungen (4.8%, 95% CI 3.6% – 6.0%) war mit jener des LZ-EKG (4.6%, 95% CI 3.5% – 5.7%) vergleichbar. Intermittierende Aufzeichnung über summarisch 19 min führte zu einer ähnlichen Detektionsrate wie ein 24-Std.-LZ-EKG.

OBJECTIVES:
Recent technology advances have allowed for heart rhythm monitoring using single-lead ECG monitoring devices, which can be used for early diagnosis of atrial fibrillation (AF). We sought to investigate the AF detection rate using portable ECG devices compared with Holter monitoring.
SETTING, PARTICIPANTS AND OUTCOME MEASURES:
We searched the Medline, Embase and Scopus databases (conducted on 8 May 2017) using search terms related to AF screening and included studies with adults aged >18 years using portable ECG devices or Holter monitoring for AF detection. We excluded studies using implantable loop recorders and pacemakers. Using a random-effects model we calculated the overall AF detection rate. Meta-regression analysis was performed to explore potential sources for heterogeneity. Quality of reporting was assessed using the tool developed by Downs and Black.
RESULTS:
Portable ECG monitoring was used in 18 studies (n=117 436) and Holter monitoring was used in 36 studies (n=8498). The AF detection rate using portable ECG monitoring was 1.7% (95% CI 1.4 to 2.1), with significant heterogeneity between studies (p<0.001). There was a moderate linear relationship between total monitoring time and AF detection rate (r=0.65, p=0.003), and meta-regression identified total monitoring time (p=0.005) and body mass index (p=0.01) as potential contributors to heterogeneity. The detection rate (4.8%, 95% CI 3.6% to 6.0%) in eight studies (n=10 199), which performed multiple ECG recordings was comparable to that with 24 hours Holter (4.6%, 95% CI 3.5% to 5.7%). Intermittent recordings for 19 min total produced similar AF detection to 24 hours Holter monitoring. CONCLUSION: Portable ECG devices may offer an efficient screening option for AF compared with 24 hours Holter monitoring.

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