Late remote ischemic preconditioning provides benefit to patients undergoing elective percutaneous coronary intervention

Zhi Liu, Yan-Ling Wang, Qi Hua, Yan-Yan Chu, Xun-Ming Ji
Cell Biochemistry and Biophysics 2014, 70 (1): 437-42
To assess whether late remote ischemic preconditioning (L-RIPC) is effective in myocardial protection in patients with ischemic heart disease undergoing elective percutaneous coronary intervention (PCI). L-RIPC is exerted by newly synthesized cardioprotective proteins. The cardioprotective effects of L-RIPC are more durable. 200 consecutive patients undergoing elective PCI were randomized to receive L-RIPC (induced by three 5-minute inflations of a blood pressure cuff to 200 mmHg around the upper arm, followed by 5-min intervals of reperfusion) or control (an uninflated cuff around the arm) at 18 h before PCI. Creatine phosphokinase (CK), its cardiac isoenzyme (CK-MB), troponin I (TNI), and high-sensitivity C-reactive protein (hs-CRP) levels were measured at 24 h after PCI. Adverse events' rates at 6 months were assessed. Compared with the control group, patients in L-RIPC group were observed with significantly lower incidences in Chest pain score >1 and ECG ST deviation >1 mm (P < 0.05). The median TNI, CK, and CK-MB concentrations at 24 h were lower in the L-RIPC group (0.009 vs. 0.036 ng/mL, 123 vs. 186 IU/L, 15 vs. 27 IU/L; P < 0.05). There was no statistical difference in hs-CRP between two groups. At 6 months, the adverse events' rate was lower in the L-RIPC group (P = 0.036). L-RIPC is effective in myocardial protection in patients undergoing elective PCI and reduces adverse events' rate at 6 months.

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