The relationship between inflammation and slow coronary flow: increased red cell distribution width and serum uric
Nihat Kalay1, Metin Aytekin, Mehmet G Kaya
1Department of Cardiology, Medicine Faculty of Erciyes University, Kayseri, Turkey.
Insights
Patients with slow coronary flow (SCF) have higher red cell distribution width (RDW) and uric acid levels. These factors may indicate inflammation and help explain the pathophysiology of SCF.
Area of Science:
- Cardiology
- Vascular Biology
- Inflammation Research
Background:
- Slow Coronary Flow (SCF) is a condition affecting coronary arteries without significant stenosis, and its underlying mechanisms remain unclear.
- Increased Red Cell Distribution Width (RDW) and elevated serum uric acid levels are associated with inflammatory states and may play a role in cardiovascular conditions.
- Investigating these markers could provide insights into the pathophysiology of SCF.
Purpose of the Study:
- To investigate the association between Red Cell Distribution Width (RDW) and serum uric acid levels in patients diagnosed with Slow Coronary Flow (SCF).
- To compare RDW and uric acid levels in patients with SCF and normal coronary arteries against a control group without SCF.
- To determine if RDW and uric acid are independent predictors of SCF in patients with normal coronary arteries.
Main Methods:
- The study included 46 patients with angiographically normal coronary arteries and SCF, and a control group of 40 patients with normal coronary arteries and no SCF.
- Red Cell Distribution Width (RDW) and serum uric acid levels were measured in all participants.
- Statistical analysis, including logistic regression, was used to compare groups and identify independent predictors.
Main Results:
- Patients with SCF demonstrated significantly higher TIMI frame counts in all three major coronary arteries compared to controls.
- Significantly elevated RDW (13.4 ± 1.6% vs. 12.6 ± 1.2%) and serum uric acid levels (5.3 ± 1.6 mg/dl vs. 4.7 ± 1.3 mg/dl) were observed in the SCF group.
- Logistic regression analysis identified uric acid (Exp(B)=1.612) and RDW (Exp(B)=1.496) as independent predictors of SCF.
Conclusions:
- Patients experiencing Slow Coronary Flow (SCF) exhibit significantly increased levels of Red Cell Distribution Width (RDW) and serum uric acid.
- These findings suggest a potential link between inflammation, indicated by RDW and uric acid, and the development or progression of SCF.
- Further research into these markers may elucidate the pathophysiological basis of SCF and inform potential therapeutic strategies.
Objectives:
The underlying mechanism of slow coronary flow (SCF) has yet to be elucidated. Increased red cell distribution width (RDW) and uric acid level may be indicative of an underlying inflammatory state. We aimed to investigate RDW and serum uric acid levels in patients with normal coronary arteries and SCF without stenosis.
Study Design:
The study included 46 consecutive patients (25 males, 21 females; mean age 54 ± 11 years) with angiographically normal coronary arteries but having SCF in all three coronary arteries. The control group consisted of 40 patients (18 males, 22 females; mean age 54 ± 9 years) with angiographically normal coronary arteries without SCF. In both groups, RDW and serum uric acid levels were measured and compared.
Results:
In the SCF group, TIMI frame counts measured in the left anterior descending coronary artery, left circumflex coronary artery, and right coronary artery were significantly higher compared to the control group (p<0.05). Patients with SCF exhibited significantly higher RDW (13.4 ± 1.6% vs. 12.6 ± 1.2%, p=0.01) and serum uric acid levels (5.3 ± 1.6 mg/dl vs. 4.7 ± 1.3 mg/dl, p=0.01) compared to controls. In logistic regression analysis, uric acid [Exp(B)=1.612, 95% CI 0.206-5.35, p=0.021] and RDW [Exp(B)=1.496, 95% CI 0.403-4.72, p=0.030] were found as independent predictors of SCF.
Conclusion:
Our findings show that patients with SCF have significantly increased RDW and serum uric acid levels. This may help throw more light on the pathophysiological basis of SCF.
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