Featured Research

from universities, journals, and other organizations

Local anesthetic stops pain at the source after hip replacement surgery

Date:
January 31, 2012
Source:
International Anesthesia Research Society (IARS)
Summary:
In patients undergoing hip replacement surgery, using a special wound catheter to infuse local anesthetic directly into the hip joint provides significant and lasting improvements in postoperative pain control, according to a new study.

In patients undergoing hip replacement surgery, using a special wound catheter to infuse local anesthetic directly into the hip joint provides significant and lasting improvements in postoperative pain control, reports a study in the February issue of Anesthesia & Analgesia, official journal of the International Anesthesia Research Society (IARS).

Related Articles


By stopping pain at the source, continuous wound infusion with local anesthetic produces lower pain scores, reduced morphine use, and less nausea and vomiting, according to the new research. "Moreover, a positive effect on superficial and deep wound pain was still present three months later," write Dr Jose Aguirre and colleagues of Balgrist University Hospital Zurich, Switzerland.

Continuous Wound Infusion Reduces Pain after Hip Surgery

The study included 76 patients undergoing minimally invasive hip arthroplasty surgery. In all patients, a specially designed wound catheter was placed into the hip joint during the operation. In one group, the catheter was used to infuse ropivacaine, a local anesthetic drug, into the joint at the end of the procedure and for 48 hours afterward. The other group received continuous wound infusion with an inactive placebo solution.

Both groups had patient-controlled morphine available for pain relief. The two groups were compared in terms of pain scores and amount of morphine used.

Patients receiving continuous wound infusion with ropivacaine had better pain control during the first 48 hours after surgery, with lower scores for pain at rest and pain with motion. This was reflected by a significant reduction in morphine use, especially on the day after surgery. Overall, patients in the ropivacaine group used 36 percent less morphine than those in the placebo group.

The ropivacaine group also had less postoperative nausea and vomiting -- a common side effect of morphine -- and were more satisfied with their pain management. None of the patients had toxic levels of ropivacaine in their bloodstream.

Continuous wound infusion with ropivacaine reduced pain not only in the days after the operation, but also in subsequent weeks and months. Three months after surgery, patients in the ropivacaine group had lower scores for wound pain, including both superficial and deep pain.

Pain is a significant problem for patients undergoing hip replacement surgery. Instilling local anesthetic directly into the wound is increasingly recognized as an effective part of "multimodal" (combination) approaches to pain control after various types of surgery. The new study is the first to specifically evaluate the effects of continuous wound infusion with modern minimally invasive hip arthroplasty techniques.

The results suggest that continuous wound infusion with ropivacaine significantly improves pain control after hip replacement surgery. What's more, better pain control in the days after surgery may reduce problems with wound pain in the weeks and months after the operation. Dr Aguirre and colleagues suggest further studies to evaluate continuous wound infusion with different kinds of drugs known to affect "central sensitization" to pain.

"Wound catheters are very inexpensive and highly effective," comments Dr. Steven L. Shafer of Columbia University, Editor-in-Chief of Anesthesia & Analgesia. "This is an important advance in providing high quality pain relief with minimal cost."


Story Source:

The above story is based on materials provided by International Anesthesia Research Society (IARS). Note: Materials may be edited for content and length.


Journal Reference:

  1. Jose Aguirre, Barbara Baulig, Claudio Dora, Georgios Ekatodramis, Gina Votta-Velis, Philipp Ruland, Alain Borgeat. Continuous Epicapsular Ropivacaine 0.3% Infusion After Minimally Invasive Hip Arthroplasty. Anesthesia & Analgesia, 2012; 114 (2): 456 DOI: 10.1213/ANE.0b013e318239dc64

Cite This Page:

International Anesthesia Research Society (IARS). "Local anesthetic stops pain at the source after hip replacement surgery." ScienceDaily. ScienceDaily, 31 January 2012. <www.sciencedaily.com/releases/2012/01/120131121238.htm>.
International Anesthesia Research Society (IARS). (2012, January 31). Local anesthetic stops pain at the source after hip replacement surgery. ScienceDaily. Retrieved November 27, 2014 from www.sciencedaily.com/releases/2012/01/120131121238.htm
International Anesthesia Research Society (IARS). "Local anesthetic stops pain at the source after hip replacement surgery." ScienceDaily. www.sciencedaily.com/releases/2012/01/120131121238.htm (accessed November 27, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Thursday, November 27, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Leaves Orphans Alone in Sierra Leone

Ebola Leaves Orphans Alone in Sierra Leone

AFP (Nov. 27, 2014) — The Ebola epidemic sweeping Sierra Leone is having a profound effect on the country's children, many of whom have been left without any family members to support them. Duration: 01:02 Video provided by AFP
Powered by NewsLook.com
Experimental Ebola Vaccine Shows Promise In Human Trial

Experimental Ebola Vaccine Shows Promise In Human Trial

Newsy (Nov. 27, 2014) — A recent test of a prototype Ebola vaccine generated an immune response to the disease in subjects. Video provided by Newsy
Powered by NewsLook.com
Pet Dogs to Be Used in Anti-Ageing Trial

Pet Dogs to Be Used in Anti-Ageing Trial

Reuters - Innovations Video Online (Nov. 26, 2014) — Researchers in the United States are preparing to discover whether a drug commonly used in human organ transplants can extend the lifespan and health quality of pet dogs. Video provided by Reuters
Powered by NewsLook.com
Today's Prostheses Are More Capable Than Ever

Today's Prostheses Are More Capable Than Ever

Newsy (Nov. 26, 2014) — Advances in prosthetics are making replacement body parts stronger and more lifelike than they’ve ever been. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins