Peacock Frank W, Varon Joseph, Ebrahimi Ramin, Dunbar Lala, Pollack Charles V
Department of Emergency Medicine, Cleveland Clinic, Cleveland, OH 44195-0001, USA.
Congest Heart Fail. 2010 Mar-Apr;16(2):55-9. doi: 10.1111/j.1751-7133.2009.00133.x.
Acute severe hypertension occurs in approximately 50% of patients with acute heart failure (AHF). Clevidipine, the latest-generation dihydropyridine calcium channel blocker, may be useful in the treatment of this patient population. The Evaluation of the Effect of Ultra-Short-Acting Clevidipine in the Treatment of Patients With Severe Hypertension (VELOCITY) trial enrolled 126 patients with systolic blood pressure (SBP) >180 mm Hg for treatment with clevidipine to a patient-specific prespecified initial target range (ITR) of SBP to be achieved within 30 minutes. Of the enrolled patients, 19 had AHF on presentation. Primary end points were the percentage in whom ITR was achieved within 30 minutes and the number whose SBP was below the ITR after 3 minutes of clevidipine infusion. Among the 19 AHF patients in VELOCITY, median time to ITR was 11.3 minutes (95% confidence interval, 7-19). ITR was reached in most patients (94%) within 30 minutes. No patient had hypotension below the ITR, and heart rate remained stable. At 18 hours, 16 of 19 patients had received continuous clevidipine infusion, and their SBP was reduced by mean of 50 mm Hg (25%) from baseline. There were no treatment-related adverse events or adverse events that led to clevidipine discontinuation. Clevidipine safely decreases SBP in AHF and does not cause unexpected hypotension. The results of this post hoc subgroup analysis suggest that clevidipine is safe, well tolerated, and efficacious in AHF patients with hypertension.
约50%的急性心力衰竭(AHF)患者会发生急性重度高血压。最新一代二氢吡啶类钙通道阻滞剂左西孟旦可能对治疗这类患者有用。超短效左西孟旦治疗重度高血压患者的疗效评估(VELOCITY)试验纳入了126例收缩压(SBP)>180 mmHg的患者,用左西孟旦治疗,使其SBP在30分钟内达到患者特异性预设初始目标范围(ITR)。在纳入的患者中,19例就诊时患有AHF。主要终点是30分钟内达到ITR的患者百分比以及左西孟旦输注3分钟后SBP低于ITR的患者数量。在VELOCITY试验的19例AHF患者中,达到ITR的中位时间为11.3分钟(95%置信区间,7 - 19)。大多数患者(94%)在30分钟内达到ITR。没有患者的血压低于ITR导致低血压,心率保持稳定。在18小时时,19例患者中有16例接受了左西孟旦持续输注,其SBP较基线平均降低了50 mmHg(25%)。没有与治疗相关的不良事件或导致停用左西孟旦的不良事件。左西孟旦可安全降低AHF患者的SBP,且不会导致意外的低血压。这项事后亚组分析的结果表明,左西孟旦在患有高血压的AHF患者中是安全、耐受性良好且有效的。