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Related Concept Videos

Cardiac Catheterization I: Pre-Procedure Overview01:28

Cardiac Catheterization I: Pre-Procedure Overview

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...
Cardiac Catheterization IV: Nursing Management01:26

Cardiac Catheterization IV: Nursing Management

Nursing responsibilities before cardiac catheterization include:Assess for allergies and establish baseline health status.Before cardiac catheterization, assess the patient for allergies to contrast dye. Perform a comprehensive baseline assessment, including vital signs, heart and breath sounds, and a neurovascular assessment of the extremities, noting distal pulses, skin color, and temperature. Instruct the patient to fast for 8-12 hours before the procedure. Evaluate baseline laboratory...
Cardiac Catheterization II: Right Heart Catheterization01:21

Cardiac Catheterization II: Right Heart Catheterization

Right Heart Catheterization: An OverviewRight heart catheterization is an invasive diagnostic procedure that measures right-sided cardiac and pulmonary artery pressures, calculates cardiac output, and identifies intracardiac shunts. It provides detailed hemodynamic data essential for diagnosing and managing various cardiovascular conditions, such as pulmonary hypertension.Access SitesCommon access sites for right heart catheterization include the internal jugular vein in the neck region, the...
Cardiac Catheterization III: Left Heart Catheterization01:24

Cardiac Catheterization III: Left Heart Catheterization

Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...
Imaging Studies for Cardiovascular System V: CT01:28

Imaging Studies for Cardiovascular System V: CT

Cardiac computed tomography (CT) scanning is an advanced cardiac imaging technique that utilizes CT technology, with or without intravenous (IV) contrast, to produce accurate cross-sectional virtual slices of specific areas of the heart, coronary circulation, and major blood vessels such as the aorta, pulmonary veins, and arteries. The computer processes these slices to generate three-dimensional images. Multidetector CT (MDCT) is a rapid form of CT scanning that captures multiple slices...
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...

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Related Experiment Video

Updated: May 21, 2026

Observational Study Protocol for Repeated Clinical Examination and Critical Care Ultrasonography Within the Simple Intensive Care Studies
10:38

Observational Study Protocol for Repeated Clinical Examination and Critical Care Ultrasonography Within the Simple Intensive Care Studies

Published on: January 16, 2019

Persistent CT nephrograms following cardiac catheterisation and intervention: initial observations.

Richard W Katzberg1, Wayne L Monsky, Nicolas D Prionas

  • 1Department of Radiology, University of California School of Medicine, 4860 Y Street, Suite 3100, Sacramento, CA, 95817, USA, Richard.katzberg@ucdmc.ucdavis.edu.

Insights Into Imaging
|June 15, 2012
PubMed
Summary

Persistent nephrograms are common after cardiac procedures, detected by unenhanced CT scans 24 hours post-procedure. These findings may be linked to cardiac catheterization details like fluoroscopic time and contrast volume.

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Last Updated: May 21, 2026

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10:38

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A Large Animal Model for Acute Kidney Injury by Temporary Bilateral Renal Artery Occlusion
09:02

A Large Animal Model for Acute Kidney Injury by Temporary Bilateral Renal Artery Occlusion

Published on: February 2, 2021

Area of Science:

  • Radiology
  • Nephrology
  • Cardiology

Background:

  • Cardiac catheterization is a common procedure.
  • Contrast-induced nephropathy is a known complication.
  • Nephrographic patterns on CT can indicate renal status.

Purpose of the Study:

  • To characterize persistent nephrographic patterns on unenhanced renal CT 24 hours after cardiac catheterization.
  • To explore the correlation between these patterns and procedural factors.

Main Methods:

  • Prospective study of 29 patients undergoing cardiac catheterization.
  • Unenhanced dual-energy CT of the kidneys performed 24 hours post-procedure.
  • Measurement of CT attenuation values and parenchymal iodine content.

Main Results:

  • Focal nephrograms observed in 34% of patients, correlating with fluoroscopic time.
  • Bilateral global nephrograms seen in 45% of patients.
  • Global nephrograms correlated significantly with fluoroscopic time and contrast material volume.

Conclusions:

  • Persistent focal and global nephrograms are frequently detected by non-contrast CT 24 hours post-cardiac catheterization.
  • These findings suggest a relationship with procedural factors such as fluoroscopic time and contrast administration.