Cited by 17Hemodynamic Monitoring and TherapyCardiovascular Function and Risk FactorsCardiovascular Health and Disease Prevention

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Use of Pressure-volume Conductance Catheters in Real-time Cardiovascular Experimentation

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Abstract

Background Most applications of pressure-volume conductance catheter measurements assess cardiovascular function at a single point in time after genetic, pharmacologic, infectious, nutritional, or toxicologic manipulation. Use of these catheters as a continuous monitor, however, is fraught with complexities and limitations. Methods Examples of the limitations and optimal use of conductance catheters as a continuous, real-time monitor of cardiovascular function are demonstrated during inotropic drug infusion in anesthetised rats. Results Inotropic drug infusion may alter ventricular dimensions causing relative movement of a well-positioned catheter, generating artifacts, including an abrupt pressure rise at end-systole that leads to over estimation of indices of contractility (max dP/dt) and loss of stroke volume signal. Simple rotation of the catheter, echocardiography-guided placement to the centre of the ventricle, or ventricular expansion through crystalloid infusion may correct for these artifacts. Fluid administration, however, alters left ventricular end-diastolic pressure and volume and therefore stroke volume, thereby obscuring continuous real-time haemodynamic measurements. Conclusions Pressure-volume artifacts during inotropic infusion are caused by physical contact of the catheter with endocardium. Repeated correction of catheter position may be required to use pressure volume catheters as a continuous real-time monitor during manipulations that alter ventricular dimensions, such as inotropic therapy.

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Metadata

Authors
Wei, A. E., Maslov, M. Y., Pezone, M. J., Edelman, E. R., & Lovich, M. A.
Affiliations
  • Tufts University (US)
  • Harvard–MIT Division of Health Sciences and Technology (US)
Corresponding author
Maslov, Mikhail Y.
Venue
Heart, Lung and Circulation
Publisher
Elsevier BV
Published
2014-11
Volume
23
Issue
11
Pages
1059-1069
ISSN
1443-9506 (ISSN-L)
OpenAlex
W1980457082
Cited by
17
References
1
Citations by year
2026: 3 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 1 · 2021: 1 · 2020: 2 · 2019: 3 · 2018: 3 · 2015: 1
FWCI
0.33
Type
journal article
Language
en
Open access
Locations
  • Heart Lung and Circulation (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
  • DSpace@MIT (Massachusetts Institute of Technology) (submittedVersion, cc-by-nc-nd)
  • PMC
Funders
  • American Heart Association (09SDG2060320)
  • Massachusetts Institute of Technology
  • National Institutes of Health (NIH-R01, GM 49039)
  • Deshpande Center for Technological Innovation, Massachusetts Institute of Technology
  • National Institute of General Medical Sciences (R01-GM-49039, R01GM049039)
Topics
  • Health Sciences › Medicine › Surgery › Hemodynamic Monitoring and Therapy
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Function and Risk Factors
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiovascular Health and Disease Prevention
Keywords
ventricular size, left ventricular contractility, stroke volume, left ventricular end-diastolic pressure, catheter positioning, crystalloid infusion, fluid administration
MeSH terms
Animals, Cardiotonic Agents, Cardiac Catheterization, Heart Ventricles, Hemodynamics, Male, Myocardial Contraction, Ventricular Function, Rats, Sprague-Dawley, Rats, Cardiac Catheters

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