alpha-adrenergic blocking agent

1. Preliminary preparation needed to use alpha-adrenergic blocking agent ( Phenoxybenzamine) and angiotensin converting enzyme inhibitor ( Captopril).
   术前用药需结合使用α肾上腺素能受体阻滞剂（酚苄明）和血管紧张素转化酶抑制剂（卡托普利）。

noun

1. any of various drugs that block alpha-adrenergic receptors

   Synonym:    alpha blockeralpha-blockeralpha-adrenergic blocker