答:红霉素为广谱抗菌素,临床上用于败血症、脓毒血症、休克型肺炎、化脓性脑膜炎等。在给长期卧床的危重病人应用时,不宜采用下肢静脉注射,因为此药具有化学剌激性,加之下肢静脉血流缓慢,在用药时如浓度过高、速度过快,易于发生血栓性静脉炎。这样血栓就有可能经下腔静脉、右心房、右心 A: Erythromycin broad-spectrum antibiotics, clinically used for sepsis, sepsis, shock pneumonia, purulent meningitis. In the long-term use of critically ill patients should not be used intravenous injection of the lower extremities, because the drug has a chemical irritation, combined with slow venous blood flow in the drug as the concentration is too high, too fast, prone to thrombophlebitis . Thrombosis may be through the inferior vena cava, right atrium, right heart