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Assessment of the relationship between red cell distribution width and cardiac syndrome X
Sait Demirkol1, Sevket Balta, Turgay Celik
1Department of Cardiology, School of Medicine, Gulhane Medical Academy, Etlik-Ankara, Turkey. saitdemirkol@yahoo.com
Insights
Patients with Cardiac Syndrome X (CSX) and coronary artery disease (CAD) show elevated red cell distribution width (RDW) levels compared to healthy individuals. This suggests inflammation may play a role in CSX, similar to CAD.
Area of Science:
- Cardiology
- Internal Medicine
- Biomarkers
Background:
- Cardiac Syndrome X (CSX) presents as angina-like chest pain with normal coronary arteries.
- Elevated red cell distribution width (RDW) may indicate underlying inflammation.
Purpose of the Study:
- To investigate red cell distribution width (RDW) levels in patients with CSX.
- To compare RDW levels in CSX patients with those having coronary artery disease (CAD) and healthy controls.
Main Methods:
- A study involving 245 subjects: 79 with CSX, 81 with CAD, and 85 controls.
- CSX defined by chest pain, ischemic stress test, and normal coronary angiogram.
- CAD defined by ≥50% coronary artery stenosis; controls had normal stress tests and angiograms.
Main Results:
- No significant difference in RDW levels between CSX and CAD groups (p=0.17).
- Both CSX and CAD groups exhibited significantly higher RDW levels compared to the control group (p<0.01).
Conclusions:
- Patients with CSX and CAD demonstrate significantly higher RDW measurements than controls.
- The elevated RDW in CSX suggests endothelial dysfunction may contribute to its pathogenesis, mirroring CAD.
Background:
Cardiac syndrome X (CSX) is characterised by angina-like chest pain, a positive stress test, and normal coronary arteries. Increased red cell distribution width (RDW) level may be indicative of an underlying inflammatory state.
Aim:
To investigate RDW level in patients with CSX and compare patients having coronary artery disease (CAD) and normal subjects.
Methods:
245 subjects (79 patients with CSX, 81 patients with CAD, and 85 controls) were enrolled in the study. The CSX group consisted of patients with anginal chest pain, ischaemia on noninvasive stress test and a normal coronary angiogram.CAD was defined as ≥ 50% stenosis in at least one coronary artery. The control group was selected from the patients with anginal symptoms but a normal stress test and a normal coronary angiogram. RDW measurements among the three groups were compared.
Results:
Baseline clinical and biochemical characteristics were not different among the three groups. There were no statistically significant differences in RDW levels between the CSX and CAD groups (p = 0.17). RDW measurements in both the CSX and CAD groups were found to be significantly higher than the control group (p < 0.01).
Conclusions:
We discovered that patients with CSX and CAD have significantly higher RDW measurements compared to controls. The relationship between CSX and higher RDW level suggests that endothelial dysfunction may also contribute to the etiopathogenesis of the CSX phenomenon as it does with CAD.
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