Pascal J P, Cales P
N Engl J Med. 1987 Oct 1;317(14):856-61. doi: 10.1056/NEJM198710013171403.
We conducted a prospective, randomized, multicenter, single-blind trial of propranolol as compared with placebo in the prevention of first upper gastrointestinal tract bleeding in patients with cirrhosis of the liver. A total of 230 patients (90 percent with alcoholism and 46 percent with a Child-Pugh grade C classification) with large esophageal varices without previous bleeding were randomly assigned to receive either propranolol (n = 118) or placebo (n = 112), after they had been divided into two groups according to the severity of their liver disease. The end points of the study were bleeding and death. The dose of propranolol was progressively increased to decrease the heart rate by 20 to 25 percent. The final doses were 40 mg of conventional propranolol and 160 and 320 mg of long-acting propranolol daily in 22 percent, 60 percent, and 18 percent of patients, respectively. The mean (+/- SD) follow-up time among survivors without bleeding was 436 +/- 172 days. The cumulative percentages of patients free of bleeding two years after inclusion in the study were 74 percent (95 percent confidence limits, 61 and 83) in the propranolol group and 39 percent (95 percent confidence limits, 15 and 69) in the placebo group (P less than 0.05). Cumulative two-year survival was 72 percent (95 percent confidence limits, 60 and 81) in the propranolol group and 51 percent (95 percent confidence limits, 37 and 64) in the placebo group (P less than 0.05). The advantage of propranolol over placebo was maintained when potentially confounding variables were adjusted with use of the Cox model. Side effects occurred in 17 percent of the patients who received propranolol and led to the stopping of treatment in 11 percent. We conclude that propranolol can decrease the incidence of first bleeding and death during a period of two years in patients with cirrhosis and large varices.
我们进行了一项前瞻性、随机、多中心、单盲试验,比较普萘洛尔与安慰剂在预防肝硬化患者首次上消化道出血中的作用。共有230例无既往出血史的大食管静脉曲张患者(90%为酒精性肝硬化,46%为Child-Pugh C级),根据肝病严重程度分为两组后,随机分配接受普萘洛尔(n = 118)或安慰剂(n = 112)治疗。研究终点为出血和死亡。普萘洛尔剂量逐渐增加,以使心率降低20%至25%。最终剂量方面,分别有22%、60%和18%的患者每日服用40 mg常规普萘洛尔以及160 mg和320 mg长效普萘洛尔。无出血存活者的平均(±标准差)随访时间为436 ± 172天。研究纳入后两年无出血患者的累积百分比,普萘洛尔组为74%(95%置信区间,61%至83%),安慰剂组为39%(95%置信区间,15%至69%)(P<0.05)。普萘洛尔组两年累积生存率为72%(95%置信区间,60%至81%),安慰剂组为51%(95%置信区间,37%至64%)(P<0.05)。使用Cox模型对潜在混杂变量进行调整后,普萘洛尔相对于安慰剂的优势依然存在。接受普萘洛尔治疗的患者中17%出现副作用,11%因此停止治疗。我们得出结论,普萘洛尔可降低肝硬化伴大静脉曲张患者两年内首次出血和死亡的发生率。