Related Experiment Video
Updated: May 14, 2026
10:10
A Novel Murine Model of Arteriovenous Fistula Failure: The Surgical Procedure in Detail
Published on: February 3, 2016
Renal arteriovenous fistula simulating hydronephrosis: A case report
Journal of Ultrasound
|February 12, 2013
Summary
Color Doppler ultrasound is crucial for diagnosing acquired renal arteriovenous fistulas (AVFs), especially in patients with a history of renal biopsy. This imaging technique aids in identifying these common renovascular malformations.
Area of Science:
- Nephrology
- Radiology
- Vascular Surgery
Background:
- Acquired renal arteriovenous fistulas (AVFs) are a known complication, particularly following renal biopsy.
- Renovascular malformations, including AVFs, are frequently diagnosed.
Purpose of the Study:
- To highlight the diagnostic utility of color Doppler ultrasound in suspected obstructive uropathy.
- To emphasize the importance of considering AVFs in patients with a history of renal biopsy.
Main Methods:
- Case report of a woman with hypertension, microhematuria, and proteinuria.
- Renal sonography with color Doppler and spectral analysis to evaluate suspected hydronephrosis.
- Selective renal angiography to confirm the diagnosis of renal arteriovenous fistula with pseudoaneurysm.
Main Results:
- Sonography revealed an anechoic area suggestive of hydronephrosis with turbulent, high-velocity arterial flow.
- Color Doppler demonstrated arterialization of the venous waveform.
- Renal angiography confirmed a middle renal AVF with pseudoaneurysm, attributed to a prior renal biopsy.
Conclusions:
- Color Doppler ultrasound is vital for diagnosing renal arteriovenous fistulas when obstructive uropathy is suspected.
- This case underscores the significance of Doppler ultrasound in patients with a history of renal biopsy presenting with urinary tract abnormalities.
Related Concept Videos
01:25Hemodialysis I: Introduction
Hemodialysis (HD) is a medical treatment that artificially removes waste products, excess fluids, and toxins from the blood when the kidneys are no longer able to perform these functions effectively. In this process, blood is filtered through a semipermeable membrane, allowing for the selective removal of waste while preserving necessary components like blood cells and proteins. Hemodialysis is typically performed in patients with end-stage renal disease (ESRD) or severe kidney...
01:24Hemodialysis II: Procedure and Complications
DialyzersA hemodialysis (HD) dialyzer is a plastic cartridge containing thousands of parallel hollow fibers, which serve as semipermeable membranes. These fibers are typically made from cellulose-based or other synthetic materials. During HD, blood is pumped into the top of the cartridge and distributed among these fibers. Simultaneously, dialysis fluid, known as dialysate, is introduced into the bottom of the cartridge, bathing the outside of the fibers. Across the semipermeable membrane,...
01:29Acute Kidney Injury II: Pathophysiology
Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
01:19Imaging Studies VII: Vascular Imaging
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...
01:20Acute Kidney Injury V: Interprofessional Care
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...