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Related Concept Videos

Acute Kidney Injury IV: Diagnostic Studies and Prevention01:30

Acute Kidney Injury IV: Diagnostic Studies and Prevention

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...
Acute Kidney Injury I: Introduction01:22

Acute Kidney Injury I: Introduction

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...
Imaging Studies VII: Vascular Imaging01:19

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DefinitionRenal angiography, also known as renal arteriography, is an imaging technique used to obtain a comprehensive view of blood flow and the vascular structure of blood vessels in the kidneys and surrounding areas.PurposeRenal angiography detects blood vessel abnormalities in the kidneys, such as aneurysms, stenosis, thrombosis, vascular tumors, and renal artery stenosis. It evaluates kidney function and guides interventional treatments like angioplasty or stent placement.Pre-Procedure...
Acute Kidney Injury V: Interprofessional Care01:20

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Acute Kidney Injury (AKI) requires a collaborative healthcare approach to restore renal function and prevent complications. Essential management strategies involve monitoring fluid and electrolyte balance, adjusting medications, initiating dialysis when necessary, and providing nutritional support.Fluid and Electrolyte ManagementFluid Monitoring: Regularly monitoring body weight, central venous pressure, and urine output helps detect fluid imbalances early. Patient intake and output are...
Imaging Studies III: Computed Tomography01:27

Imaging Studies III: Computed Tomography

DefinitionComputed Tomography (CT) of the genitourinary (GU) tract is a non-invasive imaging modality that utilizes X-rays and computer processing to generate detailed cross-sectional images of the urinary system, encompassing the kidneys, ureters, bladder, and adjacent structures such as the adrenal glands.PurposeCT scans of the GU tract serve several diagnostic and therapeutic purposes, including:Diagnosis of Urinary Tract Diseases: Detects kidney stones, tumors, cysts, and congenital...
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Cardiac catheterization is an invasive diagnostic technique used to identify and evaluate structural and functional diseases of the heart and major blood vessels. This technique diagnoses congenital heart disease, coronary artery disease, valvular heart disease, and coronary spasms and assesses ventricular function. It helps guide treatment decisions, including the need for revascularization procedures like percutaneous coronary intervention (PCI) or coronary artery bypass grafting (CABG) and...

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Related Experiment Video

Updated: May 31, 2026

Point-of-Care Kidney and Genitourinary Ultrasound in Adults: Image Acquisition
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Contrast-Associated Acute Kidney Injury: Balancing Kidney Risk and Access to Essential Imaging.

Kody Shaw1, Grace Chia2, Rob Walker3

  • 1Department of Nephrology, Te Whatu Ora-Waitaha Canterbury, Christchurch, New Zealand.

Nephrology (Carlton, Vic.)
|May 29, 2026
PubMed
Summary
This summary is machine-generated.

Modern iodinated contrast media rarely cause significant kidney injury, contrary to past beliefs. This review suggests that excessive caution may hinder necessary medical imaging for patients with kidney disease.

Keywords:
acute kidney injurychronic kidney diseasecontrast mediadiagnostic imagingrenalism

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Area of Science:

  • Radiology
  • Nephrology
  • Pharmacology

Background:

  • Iodinated contrast media (ICM) are vital in medical imaging.
  • Historically, contrast-induced nephropathy (CIN) raised concerns, especially for patients with kidney disease.
  • This led to cautious use, delays, and avoidance of necessary imaging.

Purpose of the Study:

  • To review contemporary evidence on ICM and kidney injury.
  • To evaluate the incidence, pathogenesis, outcomes, and prevention of contrast-associated acute kidney injury (CA-AKI).
  • To inform updated national guidance on contrast use.

Main Methods:

  • Structured narrative literature review.
  • Searches conducted in PubMed/MEDLINE, Embase, Scopus, and Google Scholar in January 2026.
  • Synthesis of evidence on ICM and kidney injury.

Main Results:

  • Early CIN reports often lacked robust controls.
  • Contemporary controlled studies show no independent link between ICM and adverse kidney outcomes (dialysis, CKD progression, mortality).
  • Preventive strategies like hydration lack proven benefit in high-quality trials.

Conclusions:

  • Clinically significant kidney injury from modern ICM is uncommon.
  • Overly cautious approaches may impede essential diagnostic and therapeutic procedures.
  • An evidence-based approach balancing timely imaging with risk factor management improves patient care.