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Review
. 2018 Dec 27;13(12):e0209794.
doi: 10.1371/journal.pone.0209794. eCollection 2018.

The E/e' ratio difference between subjects with type 2 diabetes and controls. A meta-analysis of clinical studies

Affiliations
Review

The E/e' ratio difference between subjects with type 2 diabetes and controls. A meta-analysis of clinical studies

Giacomo Zoppini et al. PLoS One. .

Abstract

Type 2 diabetes is associated with an increased risk of heart failure. Left ventricular diastolic dysfunction and type 2 diabetes are frequently associated. Using echocardiography, we know that tissue Doppler imaging E/e' ratio is a reliable predictor of left ventricular filling pressure. We performed a systematic review and meta-analysis to investigate the averaged E/e' ratio value in patients with type 2 diabetes compared to non-diabetic controls. In the analysis we included cross-sectional studies providing the averaged E/e' ratio. Subgroup/sensitivity analyses were conducted according to variables known to influence E/e' ratio measurements. The analysis included 15 cross sectional studies with 877 type 2 diabetes patients and 1193 controls. The weighted mean difference showed higher values in diabetes (WMD 2.02; 95% CI 1.35, 2.70; p<0.001). The result was consistent in the subgroup/sensitivity analyses. Visual inspection of the funnel plot did not identify substantial asymmetry and the Egger test for funnel plot asymmetry showed a p value of 0.36. In conclusion, our assessment suggests that averaged E/e' ratio is consistently increased in patients with type 2 diabetes compared to non-diabetic controls in the absence of cardiovascular diseases and complicated hypertension. This alteration may be a precocious diastolic alteration in the diabetic cardiomyopathy.

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Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. The PRISMA flowchart of the systematic search and quantitative synthesis.
Fig 2
Fig 2. The Forest plot of the weighted mean difference (WMD) of E/e’ ratio with 95% C.I. of the included studies that compared averaged E/e’ between patients with and without diabetes.
A positive value signifies that E/e’ is higher in patients with diabetes.
Fig 3
Fig 3. The Forest plot of the WMD with 95% C.I. of the subgroup analyses: Panel A, region; panel B, matching; panel C, hypertension; panel D, glycemic control.
A positive value signifies that E/e’ is higher in patients with diabetes.
Fig 4
Fig 4. The Funnel plot analysis of the studies included in the analysis.

References

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