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Relation of fragmented QRS to tissue Doppler-derived parametersin patients with familial Mediterranean fever
Muhammet Murat Celik1, Eyup Buyukkaya, Nilgul Ustun
1Faculty of Medicine, Department of Internal Medicine, Mustafa Kemal University, Hatay, Turkey, dr.muratcelik@yahoo.com.
Background:
Familial Mediterranean fever (FMF) may pose a risk for cardiovascular diseases due to continuous inflammatory status observed during the course of the disease. Recently, the presence of fragmented QRS (fQRS) has been recognized as a predictor of myocardial fibrosis. In this study, we aim to investigate the frequency of fQRS and its relation to Doppler-based indices.
Methods:
This study consisted of 80 FMF patients and 30 healthy control subjects. fQRS pattern was defined as the presence of additional R waves or RSR', evidenced by notched R or S wave on electrocardiography (ECG). The patient and the control groups underwent conventional echocardiography and tissue Doppler echocardiography.
Results:
There was no significant difference between groups regarding age (29 ± 12 vs 29 ± 15). FMF patients exhibited a statistically higher frequency of fQRS (% 56 vs % 13) (p < 0.01). E/Em ratio showed a statistically significant increase in the FMF group with fQRS (p < 0.0001), while the mean Em value was markedly lower (p < 0.0001).
Conclusions:
FMF patients displayed a statistically significant increase in frequency of fQRS. Doppler-derived diastolic index was statistically significantly impaired in FMF patients with fQRS as compared with the patients without fQRS. In conclusion, fQRS might be a new noninvasive marker for cardiac involvement in FMF patients.
Insights
Familial Mediterranean Fever (FMF) patients show a higher frequency of fragmented QRS (fQRS), indicating potential cardiac involvement. This fragmented QRS pattern is linked to impaired diastolic function in FMF patients.
Area of Science:
- Cardiology
- Genetics
- Internal Medicine
Background:
- Familial Mediterranean Fever (FMF) is associated with chronic inflammation, increasing cardiovascular disease risk.
- Fragmented QRS (fQRS) on ECG is a novel indicator of myocardial fibrosis.
- Investigating fQRS in FMF may reveal subclinical cardiac changes.
Purpose of the Study:
- To determine the frequency of fQRS in FMF patients.
- To assess the relationship between fQRS and Doppler-derived echocardiographic indices in FMF.
- To explore fQRS as a noninvasive marker for cardiac involvement in FMF.
Main Methods:
- Electrocardiography (ECG) to identify fQRS patterns.
- Conventional and tissue Doppler echocardiography in 80 FMF patients and 30 controls.
- Analysis of fQRS prevalence and correlation with diastolic function parameters (E/Em, Em).
Main Results:
- FMF patients had a significantly higher prevalence of fQRS (56% vs 13%).
- FMF patients with fQRS showed significantly increased E/Em ratio and decreased Em.
- No significant age difference between FMF patients and controls.
Conclusions:
- Fragmented QRS (fQRS) is more frequent in Familial Mediterranean Fever (FMF) patients.
- Doppler-derived diastolic indices are impaired in FMF patients with fQRS.
- fQRS may serve as a noninvasive marker for cardiac involvement in FMF.
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