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Experimental coronary artery occlusion

I. Measurement of infarct size

Experimenteller Koronarverschluß

I. Bestimmung der Infarktgröße

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Summary

We studied the size of infarcts in 25 dogs 48 hrs after proximal occlusion of the left anterior descending coronary artery. In one group of animals infarct size was measured by histologic criteria, in another group the infarct was measured macrohistochemically using p-NBT and malate to incubate unfixed slices of myocardium. In both groups infarct size was expressed as percentage of the area of perfusion of the occluded artery. Infarct size was 72% of the area-at-risk in the group studied by histology and 74.5% in the macrohistochemical group. The satisfactory agreement of both methods favors the p-NBT technique because of its ease and speed. It is suggested that the expression of infarct size as percentage of the perfusion area is a good definition and should be used in experiments designed to manipulate infarct size. In this way differences in the size of occluded arteries and their respective perfusion areas have no or only a negligible influence on infarct size.

Zusammenfassung

Wir untersuchten die Infarktgröße in 25 Hundeherzen 48 Stunden nach proximaler Ligatur des R. interventricularis anterior. Die Versuchstiere wurden in 2 Gruppen eingeteilt, in einer Gruppe wurde die Infarktgröße nach histologischen und in der anderen nach makrohistochemischen (p-dBT-Malat-Inkubation) Kriterien bestimmt. In beiden Gruppen wurde die Infarktgröße in Prozent des Perfusionsgebietes der verschlossenen Arterie ausgedrückt. 72% des Perfusionsgebietes waren infarziert bei Bestimmung der Infarktgröße mit histologischen Kriterien, und 74,5% waren infarziert nach makrohistochemischen Kriterien. Die technisch einfachere und schnellere makrohistochemische Methode hat bei dieser guten Übereinstimmung der Resultate Vorteile vor der histologischen Methode. Der Vergleich der Infarktgröße mit der Perfusionszone der verschlossenen Arterie hat den Vorteil der interindividuellen Vergleichbarkeit.

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References

  1. Maroko, P. R., J. Kjekshus, B. E. Sobel, T. Watanabe, J. W. Covell, J. Ross jr., E. Braunwald: Factors influencing infarct size following experimental coronary artery occlusion. Circulation41, 63 (1971).

    Google Scholar 

  2. Maroko, P. R., E. Braunwald: Effects of metabolic and pharmacologic interventions on myocardial infarct size following coronary occlusion. Circulation53, Suppl. I, 162—167 (1967).

    Google Scholar 

  3. Maroko, P. R., P. Libby, J. W. Covell, B. E. Sobel, J. Ross jr., E. Braunwald: Recordial ST segment elevation mapping: An atraumatic method for assessing alterations in the extent of myocardial ischemic injury. The effects of pharmacologic and hemodynamic interventions. Am. J. Cardiol.92, 223 (1972).

    Google Scholar 

  4. Hillis, L. D., J. Askenazi, E. Braunwald, P. Radvany, J. E. Muller, M. C. Fishbein, P. R. Maroko: Use of changes in the epicardial QRS complex to assess interventions which modify the extent of myocardial necrosis following coronary artery occlusion. Circulation54, 591 (1976).

    PubMed  Google Scholar 

  5. Muller, J. E., P. R. Maroko, E. Braunwald: Evaluation of precordial electrocardiographic mapping as a means of assessing changes in myocardial ischemic injury. Circulation52, 16 (1975).

    PubMed  Google Scholar 

  6. Shell, W. E., J. K. Kjekshus, B. E. Sobel: Quantitative assessment of the extent of myocardial infarction in the conscious dog by means of analysis of serial changes in serum creatine phosphokinase activity. J. Clin. Invest.50, 2614 (1971).

    PubMed  Google Scholar 

  7. Sobel B. E., G. F. Bresnahan, W. E. Shell: Estimation of infarct size in man and its relation to prognosis. Circulation46, 640 (1972).

    PubMed  Google Scholar 

  8. Schaper, W., P. Remysen, R. Xhonneux: The size of myocardial infarction after experimental coronary artery ligation. Z. Kreislaufforschg.58, 904 (1969).

    Google Scholar 

  9. Kalbfleisch, H.: Eine Methode zur postmortalen Größenbestimmung der Versorgungsgebiete einzelner Herzkranzarterien. Z. Kardiol. 64, 987 (1975).

    PubMed  Google Scholar 

  10. Schaper, W.: Experimental coronary artery occlusion. III. The determinants of collateral blood flow in acute coronary occlusion. Basic Res. Cardiol., in press.

  11. Sandritter, W., R. Jestädt: Triphenyltetrazoliumchlorid (TTC) als Reduktionsindikator zur makroskopischen Diagnose des frischen Herzinfarkts. Verh. Dtsch. Ges. Pathol.41, 165 (Stuttgart 1958).

    Google Scholar 

  12. Nachlas, M. M., T. K. Shnitka: Macroscopic identification of early myocardial infarcts by alterations in dehydrogenase activity. Amer. J. Pathol.42, 379 (1963).

    Google Scholar 

  13. Feldmann, S., S. Glagov, R. W. Wissler, R. H. Hughes: Post mortem delineation of infarcted myocardium. Arch. Pathol. Lab. Med.100, 55 (1976).

    PubMed  Google Scholar 

  14. Pearse, A. G. E.: Histochemistry, Theoretical and Applied (Boston 1968).

  15. Schaper, W., W. Flameng, B. Winkler, B. Wüsten, W. Türschmann, G. Neugebauer, M. Carl, S. Pasyk: Quantification of collateral resistance in acute and chronic experimental coronary occlusion in the dog. Circ. Res.39, 371 (1976).

    PubMed  Google Scholar 

  16. Schaper, W.: The collateral circulation of the heart (Amsterdam, London, New York 1971).

  17. Schaper, W., S. Pasyk: Influence of collateral flow on the ischemic tolerance of the heart following acute and subacute coronary occlusion. Circulation53 (I), 57—62 (1976).

    Google Scholar 

  18. Pasyk, S., W. Schaper: Myocardial flow and its distribution during acute myocardial infarction in the unanesthetized dog. Circulation50 (III), 198, (abstr. 783) (1974).

    Google Scholar 

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Schaper, W., Frenzel, H. & Hort, W. Experimental coronary artery occlusion. Basic Res Cardiol 74, 46–53 (1979). https://doi.org/10.1007/BF01907684

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