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Anatomical Reconstructions of the Human Cardiac Venous System using Contrast-computed Tomography of Perfusion-fixed Specimens
06:02

Anatomical Reconstructions of the Human Cardiac Venous System using Contrast-computed Tomography of Perfusion-fixed Specimens

Published on: April 18, 2013

Retrospective analysis of contrast-enhanced computed tomographic findings related to obstructive shock due to

Kohei Sasaguri1, Hiroyuki Irie, Takeshi Imaizumi

  • 1Department of Radiology, Faculty of Medicine, Saga University, Saga, Japan. k.sasaguri@gmail.com

Journal of Computer Assisted Tomography
|January 21, 2012
PubMed

Insights

Contrast-enhanced CT scans reveal key indicators of obstructive shock in ascending aortic dissection (AAD). Findings include pericardial effusion and altered organ enhancement, reflecting impaired cardiac function.

Area of Science:

  • Cardiovascular Imaging
  • Thoracic Radiology
  • Emergency Medicine

Background:

  • Ascending aortic dissection (AAD) can lead to obstructive shock.
  • Contrast-enhanced computed tomography (CECT) is crucial for diagnosing AAD.
  • Identifying CECT findings associated with obstructive shock in AAD is clinically important.

Purpose of the Study:

  • To evaluate CECT findings in patients with obstructive shock due to AAD.
  • To differentiate CECT findings between AAD patients with and without shock.
  • To correlate CECT findings with hemodynamic compromise in AAD.

Main Methods:

  • Retrospective analysis of CECT scans from 9 AAD patients with shock, 11 AAD patients without shock, and 18 controls.
  • Assessment of pericardial effusion, inferior vena cava diameter, periportal hypodensity, and contrast reflux.
  • Evaluation of aortic and visceral enhancement patterns, including peripancreatic edema and bowel changes.

Main Results:

  • Shock patients exhibited higher rates of pericardial effusion, periportal hypodensity, and retrograde contrast reflux.
  • Inferior vena cava diameter was larger in shock patients.
  • Altered aortic and visceral enhancement patterns were observed in shock patients, indicating flow redistribution.

Conclusions:

  • CECT findings in AAD with obstructive shock suggest impaired diastolic filling and reduced cardiac output.
  • Observed enhancement patterns reflect compensatory flow redistribution to vital organs.
  • CECT provides valuable insights into the pathophysiology of obstructive shock in AAD.
Abstract

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