Results: Intravenous infusion of Phetolamine was cancelled due to accelerated heart rate in 4 cases and was cancelled due to nausea, dyspnea and discomfort in 3 cases.

• 结果：本组有4例在首次用药后出现明显的心率增快，3例出现恶心、气促、全身不适等副作用而停止用药。