Related Experiment Video
Updated: May 28, 2026
09:02
A Large Animal Model for Acute Kidney Injury by Temporary Bilateral Renal Artery Occlusion
Published on: February 2, 2021
Troponins in acute kidney injury
David Song1, Janak R de Zoysa, Alvin Ng
1Department of Chemical Pathology, Labplus, Auckland City Hospital, Auckland, New Zealand. dsong@adhb.govt.nz
Renal Failure
|October 21, 2011
Summary
Acute kidney injury (AKI) can elevate cardiac troponin levels, even without other heart conditions. This study shows impaired kidney function directly impacts troponin measurements in AKI patients.
Area of Science:
- Cardiology
- Nephrology
- Biomarkers
Background:
- Cardiac troponins are key biomarkers for myocardial injury.
- Acute kidney injury (AKI) is common and can affect cardiac biomarker levels.
- Previous studies suggest a link between kidney function and troponin levels, but often in chronic settings.
Purpose of the Study:
- To investigate and describe cardiac troponin levels in patients presenting with acute kidney injury (AKI).
- To determine if AKI, independent of other confounders, influences troponin measurements.
- To compare troponin I, troponin T, and creatine kinase-MB (CKMB) in AKI patients.
Main Methods:
- Prospective observational study in a tertiary hospital setting.
- Measurement of troponin I, troponin T, and CKMB in subjects with AKI.
- Exclusion of patients with known causes of elevated troponin levels to isolate the effect of AKI.
Main Results:
- Six out of nineteen AKI subjects exhibited elevated troponin I and T levels (above 99th percentile).
- High concordance was observed between troponin I and troponin T results.
- Concordance between elevated troponin and CKMB was lower (45%).
- Factors associated with elevated troponin included age >60, abnormal ECG, and prior ischemic heart disease.
Conclusions:
- This study provides evidence that acute kidney injury, without confounding factors, can lead to elevated cardiac troponin levels.
- Impaired renal function appears to influence plasma troponin levels in AKI.
- Findings suggest a similar impact of renal function on troponin levels in both acute and chronic kidney disease.
Related Concept Videos
01:22Acute 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...
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...
01:29Acute Kidney Injury III: Clinical Manifestations
Acute Kidney Injury (AKI) progresses through distinct clinical phases: the oliguric, diuretic, and recovery phases, each marked by unique manifestations and challenges.Oliguric Phase:The oliguric phase is the initial stage of AKI, typically lasting 10 to 14 days. This phase is marked by a significant reduction in urine output, usually less than 400 mL per day, indicating decreased kidney function. Fluid retention is a prominent feature, leading to symptoms such as edema, hypertension, and...
01:30Acute 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...
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...
01:22Acute Kidney Injury VI: Nursing Management
Acute Kidney Injury (AKI) results in an inability to maintain fluid, electrolyte, and acid-base balance. Effective nursing management is critical in improving patient outcomes and includes comprehensive patient assessment and targeted interventions.Comprehensive Patient AssessmentA detailed history collection is essential, focusing on any recent infections, nephrotoxic medication use, or chronic conditions such as hypertension and diabetes that may contribute to AKI. During the physical...