笔者遇见1例阿替洛尔(atenolol)引起白细胞减少,报道如下。患者男,44a,因频发室性早搏二联律来诊。血白细胞数7.2×10~9/L。于1989年10月1日始服用阿替洛尔治疗,先用100 mg,bid,1mo后减为50mg,bid,2mo后减为50mg,qd,自觉心慌明显时加服50mg/d。服至1991年2月下旬患者自觉乏力,日渐加重,3月1日查血白细胞数2.45×10~9/L,考虑是长期服用阿替洛尔引起的白细胞减少,即 I met a case of atenolol caused leukopenia, reported as follows. Male patient, 44a, due to frequent premature ventricular contractions double consultation. Blood leukocytes 7.2 × 10 ~ 9 / L. On October 1, 1989 began taking atenolol treatment, first with 100 mg, bid, after 1mo reduced to 50mg, bid, 2mo after reduced to 50mg, qd, consciously flustered significantly when added 50mg / d. Serve until late February 1991 patients with weakness, increasing, on March 1 to check the number of white blood cells 2.45 × 10 ~ 9 / L, consider long-term use of atenolol-induced leukopenia, that is