Prolonged Cardiac Monitoring and Stroke Recurrence
A Meta-analysis
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Abstract
Background and Objectives Prolonged poststroke cardiac rhythm monitoring (PCM) reveals a substantial proportion of patients with ischemic stroke (IS) with atrial fibrillation (AF) not detected by conventional rhythm monitoring strategies. We evaluated the association between PCM and the institution of stroke preventive strategies and stroke recurrence.
Methods We searched MEDLINE and SCOPUS databases to identify studies reporting stroke recurrence rates in patients with history of recent IS or TIA receiving PCM compared with patients receiving conventional cardiac rhythm monitoring. Pairwise meta-analyses were performed under the random effects model. To explore for differences between the monitoring strategies, we combined direct and indirect evidence for any given pair of monitoring devices assessed within a randomized controlled trial (RCT).
Results We included 8 studies (5 RCTs, 3 observational; 2,994 patients). Patients receiving PCM after their index event had a higher rate of AF detection and anticoagulant initiation in RCTs (risk ratio [RR] 3.91, 95% CI 2.54–6.03; RR 2.16, 95% CI 1.66–2.80, respectively) and observational studies (RR 2.06, 95% CI 1.57–2.70; RR 2.01, 95% CI 1.43–2.83, respectively). PCM was associated with a lower risk of recurrent stroke during follow-up in observational studies (RR 0.29, 95% CI 0.15–0.59), but not in RCTs (RR 0.72, 95% CI 0.49–1.07). In indirect analyses of RCTs, the likelihood of AF detection and anticoagulation initiation was higher for implantable loop recorders compared with Holter monitors and external loop recorders.
Discussion PCM after an IS or TIA can lead to higher rates of AF detection and anticoagulant initiation. There is no solid RCT evidence supporting that PCM may be associated with lower stroke recurrence risk.
Glossary
- AF=
- atrial fibrillation;
- AHA=
- American Heart Association;
- ASA=
- American Stroke Association;
- ESC=
- European Society of Cardiology;
- ESUS=
- embolic stroke of undetermined source;
- ICH=
- intracranial hemorrhage;
- ILR=
- implantable loop recorder;
- IS=
- ischemic stroke;
- NMA=
- network meta-analysis;
- PCM=
- poststroke cardiac rhythm monitoring;
- RCT=
- randomized controlled trial;
- RR=
- risk ratio;
- SUCRA=
- surface under the cumulative ranking
Footnotes
Go to Neurology.org/N for full disclosures. Funding information and disclosures deemed relevant by the authors, if any, are provided at the end of the article.
Editorial, page 781
- Received October 6, 2021.
- Accepted in final form February 1, 2022.
- © 2022 American Academy of Neurology
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Letters: Rapid online correspondence
- Author Response: Prolonged Cardiac Monitoring and Stroke Recurrence: A Meta-analysis
- Georgios Tsivgoulis, Professor of Neurology, National and Kapodistrian University of Athens
- Aristeidis Katsanos, Assistant Professor of Neurology, McMaster University and Population Health Research Institute
Submitted March 27, 2022 - Author Response: Prolonged Cardiac Monitoring and Stroke Recurrence: A Meta-analysis
- Georgios Tsivgoulis, Professor of Neurology, National and Kapodistrian University of Athens
- Aristeidis Katsanos, Assistant Professor of Neurology, McMaster University and Population Health Research Institute
Submitted March 27, 2022 - Reader Response: Prolonged Cardiac Monitoring and Stroke Recurrence: A Meta-analysis
- Eugene L Scharf, Neurologist, Mayo Clinic
Submitted March 17, 2022 - Reader Response: Prolonged Cardiac Monitoring and Stroke Recurrence: A Meta-analysis
- Thomas Raphael Meinel, Vascular Neurologist, Stroke Research Center Bern
Submitted March 14, 2022
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