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BACKGROUND: The aim of this study was to compare pre-arrest and post-resuscitation organ perfusion values and to investigate whether, during the post-resuscitation phase, administration of the angiotensin II antagonist telmisartan (TELM) 10 min after restoration of spontaneous circulation (ROSC) could improve organ flow in comparison to placebo. RESULTS: Five minutes after ROSC in the TELM group, blood flow in the cortex and myocardium increased to 583% (P &lt; 0.05) and 137% (not significant), respectively, whereas blood flow of the colon, stomach and pancreas decreased to 50% (P &lt; 0.05), 28% (P &lt; 0.05) and 19% (P &lt; 0.05) of pre-arrest values, respectively. At 90 min after ROSC, pre-arrest perfusion values both in non-splanchnic and splanchnic organs were achieved. At no point in time were there significant differences between the two groups with respect to organ blood flow or speed of recovery of organ perfusion. CONCLUSIONS: During the post-resuscitation phase, organ blood flow is characterized by the coincidence of increased cerebral and myocardial blood flow and decreased intestinal blood flow. Administration of TELM 10 min after ROSC did not improve the recovery of organ perfusion.

Effects of an angiotensin II antagonist on organ perfusion during the post-resuscitation phase in pigs.