Pain Starting at Delivery Is Rare Six, 12 Months Later

And, in rats, hypersensitivity to mid-pregnancy peripheral nerve injury resolves soon after birth

WEDNESDAY, Jan. 9 (HealthDay News) -- Pain beginning at delivery is rarely reported six to 12 months after delivery; and the postpartum period seems to protect from chronic hypersensitivity to peripheral nerve injury in rats, according to two studies published in the January issue of Anesthesiology.

James C. Eisenach, M.D., from the Wake Forest School of Medicine in Winston Salem, N.C., and colleagues surveyed 937 women (76 percent of 1,228 women interviewed within 36 hours of delivery) at two months after delivery to identify pain that began at the time of delivery, and again at six and 12 months to examine predictors of pain. The researchers found that pain was rare at six (1.8 percent) and 12 months (0.3 percent). Seven and 16.7 percent, respectively, of one aspect of the variability in acute post-delivery pain was explained by past history of pain and degree of tissue damage. These factors were not related to incidence of pain two months later.

Silvia Gutierrez, Ph.D., also from the Wake Forest School of Medicine, and colleagues examined the effect of pregnancy and delivery on peripheral nerve injury-induced hypersensitivity to mechanical stimuli in rats. For rats that underwent spinal nerve ligation at mid-pregnancy, the researchers found that hypersensitivity partially resolved after delivery, but this resolution was prevented by removal of pups. Spinal nerve ligation performed within 24 hours of delivery resulted in acute hypersensitivity that partially resolved over two to three weeks. Hypersensitivity returned temporarily following weaning.

"Understanding whether and how pregnancy or the puerperium protects against the development of posttraumatic chronic pain is important not only to women who give birth and their children, but may also provide therapeutic targets for future prevention and treatment of chronic pain in other populations," write the authors of an accompanying editorial.

Full Text - Eisenach
Full Text - Gutierraz
Editorial

Copyright © 2012 HealthDay. All rights reserved.

Powered by

jQuery UI Accordion - Default functionality

For life-long learning and continuing professional development, come to Lippincott's NursingCenter.

Nursing Jobs Plus
Featured Jobs
Recommended CE Articles Recommended Nursing Articles

Abdominal Pain: An Approach to a Challenging Diagnosis
AACN Advanced Critical Care, July/September 2014
Free access will expire on October 13, 2014.


HIPAA Compliance Practice Tips
Professional Case Management, July/August 2014
Free access will expire on September 29, 2014.


Follow the leader: How does “followership” influence nurse burnout?
Nursing Management, August 2014
Free access will expire on September 29, 2014.


More Recommended Articles

Subscribe to Recommended Articles

Evidence Based Practice Skin Care Network NursingCenter Quick Links What’s Trending Events