Aggressive hydraTion in patients with ST-Elevation Myocardial infarction undergoing Primary percutaneous coronary intervention to prevenT contrast-induced nephropathy (ATTEMPT): Study design and protocol for the randomized, controlled trial, the ATTEMPT, RESCIND 1 (First study for REduction of contraSt-induCed nephropathy followINg carDiac catheterization) trial

Yong Liu, Ji-Yan Chen, Yong Huo, Jun-Bo Ge, Ying Xian, Chong-Yang Duan, Shi-Qun Chen, Wei Jiang, Ping-Yan Chen, Ning Tan
American Heart Journal 2016, 172: 88-95
Adequate hydration is recommended for acute ST-elevation myocardial infarction (STEMI) patients undergoing primary percutaneous coronary intervention (PCI) to prevent contrast-induced nephropathy (CIN). However, the optimal hydration regimen has not been well established in these high-risk patients. The objective of this study is to evaluate the efficacy of a preprocedural loading dose plus postprocedural aggressive hydration with normal saline guided by the left ventricular end-diastolic pressure (LVEDP) compared with general hydration for CIN prevention. The ATTEMPT study is a multicenter, open-label, investigator-driven, randomized controlled trial in China. Approximately 560 patients with STEMI undergoing primary PCI will be randomized (1:1) to receive either periprocedural general hydration (control group) or aggressive hydration (treatment group). Patients in the control group receive periprocedural general hydration with ≤500 mL normal saline (within 6 hours) at a normal rate (0.5 or 1 mL/kg · h). Patients in the treatment group receive a preprocedural loading dose (125/250 mL) of normal saline within 30 minutes and intravenous hydration at a normal rate until LVEDP is available, followed by postprocedural aggressive hydration guided by LVEDP for 4 hours and then continuous intravascular hydration at the normal rate until 24 hours after PCI. The primary end point is CIN, defined as a >25% or 0.5-mg/dL increase in serum creatinine from baseline during the first 48 to 72 hours after procedure. The ATTEMPT study has the potential to identify optimal hydration regimens for STEMI patients undergoing PCI.

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