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An Analysis of the Prevalence and Risk Factors of Contrast-Associated Acute Kidney Injury in Patients With Diabetic
Hüseyin Karaaslan1, Nida Uyar1, Ensar Gazi Göçer2
1Department of Endocrinology, School of Medicine, Harran University, Sanliurfa, Turkey.
Insights
Contrast-associated acute kidney injury (CA-AKI) is common in diabetic foot ulcer (DFU) patients undergoing contrast-enhanced computed tomographic angiography (CTA). Key risk factors include longer diabetes history and heart failure, necessitating preventive measures.
Area of Science:
- Nephrology
- Cardiology
- Endocrinology
Background:
- Contrast-associated acute kidney injury (CA-AKI) is a significant complication linked to renal dysfunction, diabetes mellitus (DM), and atherosclerotic cardiovascular diseases (ASCVD).
- Diabetic foot ulcers (DFU) often coexist with ASCVD risk factors and comorbidities, suggesting a potential for high CA-AKI prevalence in this population.
Purpose of the Study:
- To investigate the incidence of CA-AKI in patients hospitalized for DFU.
- To identify risk factors associated with CA-AKI in DFU patients undergoing contrast-enhanced computed tomographic angiography (CTA).
Main Methods:
- Retrospective analysis of 208 type 2 diabetic patients hospitalized for DFU.
- Division into two groups: 107 patients undergoing CTA (group 1) and 101 control patients not receiving contrast media (group 2).
- Monitoring of serum creatinine levels post-CTA to diagnose AKI.
Main Results:
- CA-AKI developed in 12.1% of patients in group 1 (underwent CTA) compared to 3.0% in group 2 (no contrast), P = 0.013.
- Identified risk factors for CA-AKI included longer DM history, elevated baseline serum creatinine, congestive heart failure, advanced Wagner stage DFUs (4-5), peripheral artery disease, older age, and lower hemoglobin.
- AKI occurred in 13 patients after CTA, with 3 in the control group showing serum creatinine elevations.
Conclusions:
- CA-AKI is a frequent complication following CTA in patients with DFU.
- Recognizing and managing identified risk factors is crucial for preventing CA-AKI in this vulnerable patient group.
Abstract:
The occurrence of contrast-associated acute kidney injury (CA-AKI) is influenced by both patient-related and contrast-related factors. More specifically, CA-AKI has been linked to renal dysfunction, diabetes mellitus (DM), and atherosclerotic cardiovascular diseases (ASCVD). We hypothesized that the prevalence of CA-AKI was high in patients with diabetic foot ulcers (DFU) because they frequently have several ASCVD risk factors and additional comorbid conditions (including ASCVD). We retrospectively examined the medical records of 208 type 2 diabetic patients who were hospitalized for DFU. These patients were divided into two groups: group 1 included 107 patients who underwent contrast-enhanced computed tomographic angiography (CTA); group 2 (control group) included 101 patients who did not receive contrast media. Following CTA, 13 (12.1%) patients developed CA-AKI in group 1, while 3 (3.0%) patients in group 2 had serum creatinine elevations consistent with AKI (P = 0.013). The following risk factors for CA-AKI were identified: longer history of DM, higher baseline serum creatinine, congestive heart failure, Wagner stage 4 and 5 DFUs, peripheral artery disease, older age, and lower hemoglobin values. CA-AKI is a common complication after CTA in patients with DFU. To reduce the risk of CA-AKI in these patients, associated risk factors and preventive measures should be considered.
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