青霉素类药物是杀菌性抗生素,它们只有在细菌细胞分裂后期细胞壁形成的短时期内有效,在其它时期是无效的。对于这类药物,长时间地维持一定的血药浓度是不必要的,而短时间内有较高的血药浓度,则对治疗有利。为此,青霉素类药物(钾盐除外)常可用推注方式给药。如采取静滴给药, Penicillins are bactericidal antibiotics that are effective only for short periods of cell wall formation at the late stages of bacterial cell division and ineffective at other times. For such drugs, long-term maintenance of blood concentration is not necessary, and a short period of time have a higher blood concentration, the treatment is beneficial. To this end, penicillins (potassium salt) can often be administered by bolus injection. If taking intravenous administration,