Related Experiment Video
Updated: May 30, 2026
08:50
Assessment of Vascular Function in Patients With Chronic Kidney Disease
Published on: June 16, 2014
The microvasculature in chronic kidney disease
Qi Lun Ooi1, Foong Kien Newk-Fon Hey Tow, Raj Deva
1The University of Melbourne, Department of Medicine (Northern Health), The Northern Hospital, Epping VIC 3076, Australia.
Summary
Chronic kidney disease (CKD) stages 3-5 is linked to narrower retinal blood vessels. This finding highlights microvascular changes in advanced kidney disease.
Area of Science:
- Nephrology
- Ophthalmology
- Cardiovascular Medicine
Background:
- Individuals with chronic kidney disease (CKD) stages 3 to 5 face elevated risks for cardiac and vascular complications.
- The association between advanced CKD and alterations in small vessel caliber remains an area of investigation.
Purpose of the Study:
- To investigate the relationship between CKD stages 3-5 and the caliber of retinal microvasculature.
- To compare retinal vessel diameters in patients with advanced CKD to those with earlier stages of kidney disease.
Main Methods:
- A cross-sectional observational study involving 126 patients with CKD stages 3-5 and 126 controls with CKD stages 1-2.
- Retinal vessel diameters were quantified using digital fundus images, measuring central retinal artery equivalent (CRAE) and central retinal vein equivalent (CRVE).
Main Results:
- Patients with CKD stages 3-5 exhibited significantly smaller mean CRAE and CRVE compared to controls.
- A progressive decrease in CRAE and CRVE was observed with increasing stages of CKD.
- Both CKD and hypertension independently predicted arteriolar narrowing, even after adjusting for other risk factors.
Conclusions:
- Reduced estimated glomerular filtration rate (eGFR) is associated with microvascular narrowing.
- These findings suggest that microvascular changes are present in patients with advanced chronic kidney disease.
Related Concept Videos
01:28Diabetic Nephropathy
Definition Diabetic nephropathy is a chronic kidney complication that results from prolonged hyperglycemia.Prevalence It is the most common cause of chronic kidney disease (CKD) and end-stage renal disease (ESRD) worldwide, affecting up to half of individuals with diabetes.Pathophysiology • Sustained hyperglycemia triggers multiple hemodynamic and metabolic changes in the kidney. • Early in the disease, increased renal blood flow and glomerular hyperfiltration occur due to afferent arteriolar...
01:25Chronic Kidney Disease I: Introduction
Chronic Kidney Disease (CKD) arises when the kidneys progressively lose their ability to function, ultimately leading to end-stage renal disease. At this advanced stage, the kidneys can no longer filter waste or maintain essential body functions, requiring renal replacement therapy (RRT) through dialysis or a kidney transplant for survival.Early-stage chronic kidney disease and detection challengesIn CKD's early stages, symptoms often remain absent because healthy nephrons compensate for...
01:24Chronic Kidney Disease II: Clinical Manifestations
Chronic Kidney Disease (CKD) progressively impairs multiple body systems due to the accumulation of uremic toxins, which disrupt cellular functions across various organs.Neurologic symptomsNeurologic symptoms often arise early in CKD, as uremic toxin buildup drives changes in cognitive and motor functions. Patients frequently experience fatigue, headache, confusion, difficulty concentrating, and, in severe cases, seizures. Peripheral neuropathy commonly manifests as burning sensations in the...
01:28Chronic Kidney Disease III: Interprofessional Care
Chronic kidney disease (CKD) requires collaborative and comprehensive management. CKD progresses through stages and can lead to end-stage kidney disease (ESKD) if untreated. Interprofessional collaboration and patient education are crucial, enabling patients to manage their health and improve their quality of life.Diagnostic approach for chronic kidney diseaseThe diagnosis of CKD primarily focuses on the glomerular filtration rate (GFR), which assesses kidney function by measuring how well...
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...
01:20Renal Corpuscle
The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous capillaries...
Glomerulus: Structure and Function
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous capillaries...