Korean Circulation Journal

  • 제42권9호
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  • Pages.600-605
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  • 2012
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  • 1738-5520(pISSN)
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  • 1738-5555(eISSN)
대한심장학회 (The Korean Society of Cardiology)
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Cardiodynamics and Infarct Size in Regional and Global Ischemic Isolated Heart Model: Comparison of 1 Hour and 2 Hours Reperfusion

  • Kim, June-Hong (Institute of Cardiovascular Research Center, Pusan National University Yangsan Hospital) ;
  • Kim, Jun (Institute of Cardiovascular Research Center, Pusan National University Yangsan Hospital) ;
  • Park, Yong-Hyun (Institute of Cardiovascular Research Center, Pusan National University Yangsan Hospital) ;
  • Chun, Kook-Jin (Institute of Cardiovascular Research Center, Pusan National University Yangsan Hospital) ;
  • Kim, Jeong-Su (Institute of Cardiovascular Research Center, Pusan National University Yangsan Hospital) ;
  • Jang, Young-Ho (Institute of Cardiovascular Research Center, Pusan National University Yangsan Hospital) ;
  • Lee, Mi-Young (Institute of Medical Science, Keimyung University) ;
  • Xu, Zhelong (Department of Anesthesiology, University of North Carolina)
  • 발행 : 2012.09.30
⟨ 이전 논문 다음 논문 ⟩

초록

Background and Objectives: We investigated whether 1 hour reperfusion is enough to assess cardiodynamics and infarct size in both regional ischemia (RI) and global ischemia (GI) in isolated rat heart models. Materials and Methods: Hearts were randomly assigned to one of the following groups (each n=14): 1) Sham hearts for 1 hour; 2) Sham hearts for 2 hours; 3) 30 minutes RI followed by 1 hour reperfusion; 4) 30 minutes of RI followed by 2 hours reperfusion; 5) 30 minutes GI followed by 1 hour reperfusion; and 6) 30 minutes GI followed by 2 hours reperfusion. Results: There were no significant differences in infarct size between 1 hour and 2 hours reperfusion in both RI and GI. Left ventricular developed pressure was significantly decreased at both 1 hour and 2 hours reperfusion in groups of RI and GI compared to baseline (p<0.01). Rate-pressure product and $+dP/dt_{max}$ also significantly decreased compared to baseline level at both 1 hour and 2 hours reperfusion in groups of RI and GI (p<0.05). Conclusion: There was no significant difference in infarct size between 1 hour and 2 hours reperfusion in groups of RI and GI. Cardiodynamic variables measured at 1 hour and 2 hours reperfusion significantly decreased compared to baseline level. Our data suggests that reperfusion of 1 hour is sufficient to assess cardiodynamics in both regional and global ischemic isolated hearts model.

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참고문헌

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