Contrast-Associated Acute Kidney Injury in High-Risk Patients Undergoing Peripheral Vascular Interventions

Satinderjit Locham1, Alejandra Rodriguez2, Mark D Balceniuk1

  • 1Division of Vascular Surgery, Department of Surgery, University of Rochester Medical Center, Rochester, NY, USA.

Insights

Prophylactic intravenous hydration and CO2 angiography did not reduce contrast-associated acute kidney injury (CA-AKI) in high-risk patients undergoing peripheral vascular interventions. Reduced kidney function and diabetes are key predictors of CA-AKI.

Area of Science:

  • Nephrology
  • Cardiovascular Interventions
  • Radiology

Background:

  • Contrast-associated acute kidney injury (CA-AKI) is a significant complication in patients undergoing peripheral vascular interventions (PVI).
  • High-risk patients, particularly those with chronic kidney disease (CKD), are more susceptible to CA-AKI.
  • Prophylactic strategies like intravenous hydration (IV prophylaxis) and carbon dioxide (CO2) angiography are explored to mitigate renal injury.

Purpose of the Study:

  • To evaluate the efficacy of prophylactic IV hydration and CO2 angiography in preventing CA-AKI in high-risk patients undergoing PVI.
  • To determine the incidence and identify risk factors for CA-AKI in this patient population.

Main Methods:

  • Retrospective analysis of 4497 patients with CKD stage 3-5 undergoing elective PVI from 2017-2021, using the Vascular Quality Initiative (VQI) database.
  • Patients were categorized into groups receiving IV prophylaxis versus no prophylaxis.
  • CA-AKI was defined as a creatinine rise >0.5 mg/dL or new dialysis within 48 hours; logistic regression was used for analysis.

Main Results:

  • The overall incidence of CA-AKI was 0.93%.
  • Neither IV prophylaxis nor CO2 angiography showed a significant reduction in CA-AKI compared to no prophylaxis.
  • Severity of CKD and diabetes were identified as independent predictors of CA-AKI. Patients with CA-AKI faced significantly higher 30-day mortality and cardiopulmonary complications.

Conclusions:

  • Prophylactic IV hydration and CO2 angiography do not appear to reduce renal injury in high-risk CKD patients undergoing PVI.
  • Reduced kidney function and a history of diabetes are significant predictors of CA-AKI.
  • Development of post-procedural AKI is associated with substantially increased morbidity and mortality risk.

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