Chloroprocaine-induced severe back pain is associated with epidural anesthesia and

Chloroprocaine-induced severe back pain is associated with epidural anesthesia and

• A. Metabisulfite
• B. Methylparaben
• C. Pregnancy
• D. Disodium EDTA

Answer: (D)

Chloroprocaine given for neuraxial (epidural) anesthesia can cause a severe, unusual backache when the solution contains certain preservatives. The preservative most repeatedly linked to this chloroprocaine-associated back pain is disodium EDTA. The presence of this chelating agent in some preservative-containing formulations is thought to irritate or provoke an inflammatory/neural reaction within the epidural or meningeal tissues, leading to the pronounced back pain described in these cases. Because of this risk, neuraxial use nowadays relies on preservative-free chloroprocaine. Metabisulfite and methylparaben are other preservatives used in various injectable solutions, but they are not the ones specifically associated with this chloroprocaine epidural back pain. Pregnancy is not a factor in this reaction. The key point is the preservative—disodium EDTA—that has been linked to this particular complication, which is why preservative-free formulations are preferred for neuraxial anesthesia.

Chloroprocaine given for neuraxial (epidural) anesthesia can cause a severe, unusual backache when the solution contains certain preservatives. The preservative most repeatedly linked to this chloroprocaine-associated back pain is disodium EDTA. The presence of this chelating agent in some preservative-containing formulations is thought to irritate or provoke an inflammatory/neural reaction within the epidural or meningeal tissues, leading to the pronounced back pain described in these cases. Because of this risk, neuraxial use nowadays relies on preservative-free chloroprocaine.

Metabisulfite and methylparaben are other preservatives used in various injectable solutions, but they are not the ones specifically associated with this chloroprocaine epidural back pain. Pregnancy is not a factor in this reaction. The key point is the preservative—disodium EDTA—that has been linked to this particular complication, which is why preservative-free formulations are preferred for neuraxial anesthesia.