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Acute Kidney Injury IV: Diagnostic Studies and Prevention01:30

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Accurate diagnosis and effective prevention are critical in managing Acute Kidney Injury (AKI), which is linked to high mortality rates ranging from 10% to 80%. Timely recognition of at-risk patients and careful monitoring can significantly reduce the likelihood of kidney damage.Diagnostic Assessments:The diagnostic process starts with a comprehensive medical history to identify prerenal, intrarenal, and postrenal causes.Prerenal causes, such as dehydration, hypotension, or blood loss, should...
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Introduction:Acute Kidney Injury (AKI) describes a swift decrease in kidney function occurring over hours to days, characterized by the kidneys' failure to remove waste products from the bloodstream. This leads to dangerous complications like metabolic acidosis, fluid overload, and electrolyte imbalances, such as hyperkalemia, which can cause life-threatening arrhythmias. AKI is common in both hospital and outpatient settings, often triggered by dehydration, sepsis, or exposure to nephrotoxic...
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Updated: Aug 7, 2025

A Large Animal Model for Acute Kidney Injury by Temporary Bilateral Renal Artery Occlusion
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Contrast-Associated Acute Kidney Injury in High-Risk Patients Undergoing Peripheral Vascular Interventions.

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

Vascular and Endovascular Surgery
|March 7, 2023
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Summary

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.

Keywords:
CO2 angiographyIV hydrationcontrast-associated acute kidney injurycontrast-induced acute kidney injurycontrast-induced nephropathyvascular access

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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.