临床上应用硝酸盐,有时并发轻度低血压,但严重的副作用不常见。最近我们有四个病例,应用本剂后,证实有危及生命的低血压和心动过缓,先前也曾有过这样的观察,这给临床上应用硝酸盐时,须小心谨慎提供了根据。硝酸盐的功效,归因于本剂具有扩张血管的作用,尤其是具有扩张静脉的特性。当静脉回流减少 Nitrate is used clinically, sometimes with mild hypotension, but serious side effects are uncommon. Recently, we have four cases, the use of the agent, confirmed life-threatening hypotension and bradycardia, had such an observation had previously, which provides the basis for the clinical use of nitrate, to be cautious. The efficacy of nitrates is attributed to the agent’s dilated blood vessels, especially with dilated veins. When the venous return is reduced