What problems can the inferior vena cava pressure cause?

After the inferior vena cava is compressed, the pressure is transmitted to the epidural space to expand and congest the epidural venous plexus, and the epidural space becomes smaller, so that the local anesthetic injected epidurally spreads widely. In other words, injecting the same dose of local anesthetic, pregnant women will have a higher level of anesthesia and analgesia than non-pregnant women. In addition, due to the expansion and congestion of the epidural venous plexus, the chance of endovascular catheterization and injection increases during epidural puncture. Therefore, the test dose should be used to prevent the toxicity of local anesthetics from intravascular injection.

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