Elevated Body Temperatures Associated with Epidurals Can Lead to Birth Injuries

Approximately 4 million women give birth in the U.S. each year, and more than 60% of them receive epidural anesthesia during labor. Epidural anesthesia is a process where pain management medication is injected near the nerves in the mother‘s lower back. And, while this process may ease pain and discomfort for the mother, it can in some circumstances create a greater risk of injury to the baby.

Epidural anesthesia has been found to increase a mother‘s temperature. While the link between epidural anesthesia and fevers is not well understood, one belief is that an inflammation response is triggered, generally in the fetal membranes and placenta. Other studies suggest that epidural anesthesia may decrease the mother‘s ability to dissipate heat at a time when she is expending energy due to the labor process.

Dr. Scott Segal at Tufts Medical Center in Boston, a teaching hospital, explains that this rise in temperature is not seen with other types of pain control or drug-free labor. Nor is there an effective, safe method for preventing maternal fever from epidural. He also cites that maternal fever in general is known to complicate up to 1/3 of all deliveries.

According to a recent study published in Pediatrics, a possible link has been found between birth injuries and women with elevated temperatures who received epidural anesthesia. The study suggests the higher the mother‘s temperature, the greater the likelihood the infant would experience problems at birth. These problems included breathing difficulties, poor muscle tone and even seizures.

The study documented that 19.2% of the women who received an epidural developed temperatures above 100.4 degrees. If the fever was over 101 degrees, the infant had a 2-6 fold increase in the risk for problems. Interestingly, the study revealed there was no difference in an infant‘s outcome for women who did not develop a fever after epidural injection versus those who did not have an epidural at all.

Many infants who experienced problems after a delivery involving a maternal fever overcame the issues associated shortly after birth; however, others did not. Maternal fever has been linked to infant brain injury resulting in cerebral palsy, muscle atrophy and learning disabilities.

And, while other factors could be at work, namely, intrauterine infections, maternal fever is certainly a risk factor that should be discussed with one‘s physician before delivery. Even if a mother has no plans to rely on epidural anesthesia, plans can change once labor sets in. It is best to know the risks ahead of time without the added pressure of making decisions while in the grips of a painful contraction.

These are all issues that should be discussed between an expecting mother and her physician. Only through understanding can a patient make informed decisions in the midst of delivery.

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