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Related Experiment Videos

Increased coronary sinus blood temperature: correlation with systemic inflammation.

K Toutouzas1, M Drakopoulou, V Markou

  • 1First Department of Cardiology, Athens Medical School, Hippokration Hospital, Greece. ktoutouz@otenet.gr

European Journal of Clinical Investigation
|April 20, 2006
PubMed
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Systemic inflammation correlates with increased coronary sinus blood temperature in patients with coronary artery disease (CAD). This suggests inflammation may drive myocardial heat production in CAD patients.

Area of Science:

  • Cardiology
  • Biomedical Engineering
  • Thermodynamics

Background:

  • Patients with single-vessel coronary artery disease (CAD) experiencing acute coronary syndromes (ACS) exhibit elevated coronary sinus (CS) blood temperature compared to the right atrium (RA).
  • Investigating the link between systemic inflammatory markers and CS temperature is crucial for understanding CAD pathophysiology.

Purpose of the Study:

  • To determine the correlation between systemic inflammatory indexes and coronary sinus (CS) blood temperature.
  • To compare CS temperature differences between patients with single-vessel versus multivessel coronary artery disease (CAD).

Main Methods:

  • Consecutive patients undergoing coronary angiography for chest pain were enrolled.
  • Coronary sinus (CS) and right atrium (RA) blood temperatures were measured using a thermography catheter.

Related Experiment Videos

  • C-reactive protein (CRP) levels and DeltaTau (CS temperature - RA temperature) were calculated.

    • Main Results:

    • DeltaTau was significantly higher in patients with ACS and stable angina (SA) compared to controls.
    • While the ACS group showed a trend towards higher DeltaTau than the SA group, this difference was not statistically significant.
    • Coronary sinus (CS) blood temperature (DeltaTau) showed a significant positive correlation with C-reactive protein (CRP) levels (R = 0.35b, P < 0.01).
    • No significant difference in DeltaTau was observed between patients with single-vessel and multivessel disease.

    Conclusions:

    • Systemic inflammation is strongly correlated with elevated coronary sinus (CS) blood temperature.
    • The findings suggest that inflammatory processes may be responsible for increased heat production within the myocardium in CAD patients.