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Related Concept Videos

Acute Kidney Injury IV: Diagnostic Studies and Prevention01:30

Acute Kidney Injury IV: Diagnostic Studies and Prevention

176
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...
176
Acute Kidney Injury I: Introduction01:22

Acute Kidney Injury I: Introduction

351
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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Imaging Studies II: Ultrasonography01:24

Imaging Studies II: Ultrasonography

183
IntroductionUltrasonography, or renal ultrasound, is a noninvasive medical imaging technique that uses high-frequency sound waves to visualize the kidneys, ureters, bladder, and surrounding tissues.Indications for Urinary System UltrasonographyUrinary system ultrasonography is indicated in various clinical scenarios, such as:Kidney Stones (Urolithiasis): To detect and monitor the size and presence of kidney or urinary tract stones.Hydronephrosis: To assess the dilation of the renal pelvis and...
183
Imaging Studies VII: Vascular Imaging01:19

Imaging Studies VII: Vascular Imaging

165
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...
165
Imaging Studies I: Kidney, Ureter, and Bladder Studies01:28

Imaging Studies I: Kidney, Ureter, and Bladder Studies

136
Kidney, Ureter, and Bladder (KUB) StudiesKidney, Ureter, and Bladder (KUB) studies are standard diagnostic imaging procedures used to assess the anatomy of the urinary system. They are commonly utilized for patients experiencing abdominal pain or urinary symptoms. By using a simple X-ray of the abdomen, KUB studies can reveal structural and pathological abnormalities within the kidneys, ureters, and bladder. These studies are particularly valuable in diagnosing kidney stones, urinary...
136
Imaging Studies V: Intravenous Urography and Retrograde Pyelography01:22

Imaging Studies V: Intravenous Urography and Retrograde Pyelography

660
IntroductionIntravenous Urography (IVU) and Retrograde Pyelography (RP) are important diagnostic imaging techniques used to evaluate the urinary system. These methods help identify structural abnormalities, obstructions, and functional issues in the kidneys, ureters, and bladder. Both procedures use iodine-based contrast media to enhance the visibility of urinary tract structures on X-ray images, though they differ in their methods and indications.1. Intravenous Urography (IVU)Intravenous...
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Early Detection of Drug-Induced Renal Hemodynamic Dysfunction Using Sonographic Technology in Rats
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New imaging techniques in AKI.

Nicholas M Selby1, Jacques Duranteau2

  • 1Centre for Kidney Research and Innovation, Division of Medical Sciences and Graduate Entry Medicine, University of Nottingham, UK.

Current Opinion in Critical Care
|October 19, 2020
PubMed
Summary
This summary is machine-generated.

New imaging techniques like contrast-enhanced ultrasonography (CEUS) and multiparametric MRI show promise for understanding acute kidney injury (AKI) in critically ill patients. These methods help evaluate renal blood flow and damage, guiding future research and clinical care.

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Area of Science:

  • Nephrology
  • Radiology
  • Critical Care Medicine

Background:

  • Acute kidney injury (AKI) is a frequent complication in critically ill patients, necessitating a deeper understanding of its pathophysiology.
  • Current management strategies for AKI require improved diagnostic tools to guide patient care effectively.
  • There is an urgent need for advanced imaging techniques to investigate AKI pathogenesis in critically ill populations.

Purpose of the Study:

  • To review the utility of advanced imaging techniques in exploring the pathophysiology of AKI in critically ill patients.
  • To highlight the potential of renal contrast-enhanced ultrasonography (CEUS) and multiparametric MRI in AKI research and clinical settings.

Main Methods:

  • Review of current literature on renal contrast-enhanced ultrasonography (CEUS) and multiparametric magnetic resonance imaging (MRI) in the context of AKI.
  • Focus on noninvasive evaluation of renal macrocirculation, microcirculation, and oxygenation.

Main Results:

  • CEUS and MRI can safely assess renal hemodynamics and oxygenation in critically ill patients.
  • These techniques reveal decreased renal blood flow, particularly in the renal cortex, during septic AKI, suggesting a role in its development.
  • Multiparametric MRI shows potential for quantifying subclinical, long-term renal damage post-AKI.

Conclusions:

  • CEUS and multiparametric renal MRI are promising tools for AKI research, offering insights into pathophysiological mechanisms and recovery.
  • Further research is required to validate these techniques in larger studies and establish their clinical utility in guiding AKI patient management.