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Published on: February 26, 2013
Long-term effects of SGLT2 inhibitors on arrhythmias: a systematic review and meta-analysis
Peipei Li1, Weiwei Chen1, Rui Chen2
1Department of Cardiology, Jilin Provincial Cardiovascular Research Institute, China-Japan Union Hospital of Jilin University, Changchun, China.
Aims:
Sodium-glucose co-transporter 2 (SGLT2) inhibitors are novel oral hypoglycemic agents strongly endorsed in the treatment guidelines for heart failure due to their cardioprotective benefits. However, their specific impact of SGLT2 inhibitors on arrhythmias incompletely understood. This systematic review and meta-analysis aimed to comprehensively evaluate the long-term effects of SGLT2 inhibitors on various arrhythmia types.
Methods:
We systematically searched PubMed, Embase, Web of Science, and ClinicalTrials.gov from database inception to 30 June 2024, to identify randomized controlled clinical trials (RCTs) with a follow-up duration of at least 52 weeks. The primary outcome of the meta-analysis was atrial fibrillation (AF) or atrial flutter (AFL), and the secondary outcomes included ventricular tachycardia (VT), ventricular fibrillation (VF), and sinus bradycardia. The pooled risk ratios (RRs) with 95% confidence intervals (CIs) were used to estimate the incidence of arrhythmias.
Results:
Thirty-nine RCTs involving 107,770 participants were included. The results of meta-analysis revealed that patients treated with SGLT2 inhibitors had a reduced risk of AF/AFL compared with placebo (RR 0.86; 95%CI, 0.77-0.95; I2 = 0%; P = 0.003). There was no significant difference in the risk of AF/AFL between the high-dose SGLT2 inhibitors group and the low-dose SGLT2 inhibitors group (RR 0.78; 95%CI, 0.60-1.02; I2 = 0%; P = 0.07), although a decreasing trend in the high-dose group was noted. Similarly, no significant differences were found for VT (RR 0.99; 95%CI, 0.81-1.22; I2 = 0%; P = 0.96), VF (RR 1.06; 95%CI, 0.73-1.54; I2 = 0%; P = 0.75) or sinus bradycardia (RR 1.12; 95%CI, 0.57-2.18; I2 = 0%; P = 0.74) between the SGLT2 inhibitors and placebo groups.
Conclusion:
SGLT2 inhibitors significantly reduce the risk of AF/AFL but have no notable impact on the risk of VT, VF, and sinus bradycardia. Additionally, different doses of SGLT2 inhibitors did not statistically influence AF/AFL incidence.
Systematic Review Registration:
https://www.crd.york.ac.uk/PROSPERO/home, identifier PROSPERO:CRD42022371089.
Insights
Sodium-glucose co-transporter 2 (SGLT2) inhibitors significantly lower the risk of atrial fibrillation and atrial flutter. However, these SGLT2 inhibitors do not impact the risk of ventricular tachycardia, ventricular fibrillation, or sinus bradycardia.
Area of Science:
- Cardiology
- Pharmacology
Background:
- Sodium-glucose co-transporter 2 (SGLT2) inhibitors are recognized for their cardioprotective effects in heart failure treatment.
- The impact of SGLT2 inhibitors on various cardiac arrhythmias remains incompletely understood.
Purpose of the Study:
- To systematically review and meta-analyze the long-term effects of SGLT2 inhibitors on different types of arrhythmias.
- To evaluate the efficacy of SGLT2 inhibitors in reducing the incidence of atrial fibrillation, atrial flutter, ventricular tachycardia, ventricular fibrillation, and sinus bradycardia.
Main Methods:
- A systematic search of major databases (PubMed, Embase, Web of Science, ClinicalTrials.gov) was conducted up to June 30, 2024.
- Included were randomized controlled trials (RCTs) with a follow-up of at least 52 weeks.
- Primary outcome: atrial fibrillation/flutter; Secondary outcomes: ventricular tachycardia, ventricular fibrillation, sinus bradycardia. Pooled risk ratios (RRs) with 95% confidence intervals (CIs) were calculated.
Main Results:
- Thirty-nine RCTs with 107,770 participants were analyzed.
- SGLT2 inhibitors significantly reduced the risk of atrial fibrillation/flutter compared to placebo (RR 0.86; 95%CI, 0.77-0.95; P = 0.003).
- No significant differences were observed for ventricular tachycardia, ventricular fibrillation, or sinus bradycardia. Dose-dependent effects on atrial fibrillation/flutter were not statistically significant.
Conclusions:
- SGLT2 inhibitors demonstrate a significant benefit in reducing the risk of atrial fibrillation and atrial flutter.
- These agents do not appear to influence the risk of ventricular arrhythmias or sinus bradycardia.
- The incidence of atrial fibrillation/flutter was not significantly affected by different doses of SGLT2 inhibitors.
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