Repeated episodes of ischemia and reperfusion (I&R) applied to one organ may trigger protection against ischemia in other organs – this phenomenon is called as the remote ischemic preconditioning (RIPC). We aimed to study the effects of repeated episodes of forearm I&R on one site on different features of arterial pressure waveforms on the contralateral arm in healthy people. 86 healthy volunteers (22+/-1,9 years) were resting in a sitting position. Finger arterial pressure waveform was recorded continuously and non-invasively (Portapres 2, FMS, The Netherlands) during 100-second rest, then 100-second forearm ischemia of the contralateral forearm (caused by inflation of the brachial arm with the pressure 60 mmHg over personal systolic blood pressure), and 100-second reperfusion. The recordings were then repeated twice, each time the ischemia was started 10-minutes after the onset of the preceding reperfusion. With the pulse contour analysis, we measured mean blood pressure (MBP), arterial compliance (Compl), distensibility (Dist), and total peripheral resistance (TPR). Two-way ANOVA was applied for testing the effects of I&R as one factor and preconditioning (3 repetitions of I&R) as another factor. Results are presented as mean +/- standard deviation. There were no significant effects of I&R on the studied features of arterial pressure waveforms (the first factor). However, the repetitions of I&R (i.e., the preconditioning as the second factor) induced significant reductions in MBP (p<0.001) and TPR (p=0.001), and increases in Compl (p=0.007) and Dist (p=0.001). Pairwise comparisons showed that the significant differences were present as early as during the second I&R and further improved after the third I&R. RIPC induces significant vascular changes in healthy individuals. RIPC reduces blood pressure and vascular resistance and improves arterial compliance and distensibility on the contralateral arm.
Europhysiology 2018 (London, UK) (2018) Proc Physiol Soc 41, PCB315
Poster Communications: Repeated episodes of forearm ischemia and reperfusion and its remote effects on mechanical properties of the arterial pressure waveforms on the contralateral arm in healthy volunteers.
G. Sibrecht2,1, P. Filberek2,1, J. Nizinski2,1, T. Krauze2, P. Guzik2
1. Faculty of Medicine I, Poznan University of Medical Sciences, Poznan, Wielkopolska, Poland. 2. Department of Cardiology - Intensive Therapy, Poznan University of Medical Sciences, Poznan, Wielkopolska, Poland.
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