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High rates of unnecessary prescribing of antibiotics continue

Date:
October 3, 2013
Source:
Brigham and Women's Hospital
Summary:
For decades, there has been a significant effort to reduce inappropriate antibiotic prescribing. Despite this work, new research finds only incremental improvement in antibiotic prescribing for adults with acute bronchitis and sore throat.

For decades, there has been a significant effort led by the Centers for Disease Control and Prevention and others to reduce inappropriate antibiotic prescribing. Despite this work, new research from Brigham and Women's Hospital (BWH) finds only incremental improvement in antibiotic prescribing for adults with acute bronchitis and sore throat. These findings were presented at IDWeek on October 3, 2013 and the sore throat data was published online in JAMA Internal Medicine.

"We know that antibiotic prescribing, particularly to patients who are not likely to benefit from it, increases the prevalence of antibiotic-resistant bacteria, a growing concern both here in the United States and around the world," said Jeffrey A. Linder, MD, MPH, a physician and researcher in the Division of General Medicine and Primary Care at BWH and senior author of the paper. "Our research shows that while only 10 percent of adults with sore throat have strep, the only common cause of sore throat requiring antibiotics, the national antibiotic prescribing rate for adults with sore throat has remained at 60 percent. For acute bronchitis, the right antibiotic prescribing rate should be near zero percent and the national antibiotic prescribing rate was 73percent."

Linder and lead author, Michael L. Barnett, MD, measured changes in the prescribing of antibiotics for adults with sore throat and acute bronchitis using nationally representative surveys of ambulatory care in the United States from 1996 -- 2010. The data represented an estimated 39 million acute bronchitis and 92 million sore throat visits by adults to primary care clinics or emergency departments.

The researchers found that although visits for sore throats decreased from 7.5 percent of primary care visits in 1997 to 4.3 percent of visits in 2010, the overall national antibiotic prescribing rate did not change with physicians prescribing antibiotics at 60 percent of visits. There was no change in the percentage of emergency department visits for sore throat during the time period (2.2-2.3 percent). The number of acute bronchitis visits increased from 1.1 million visits in 1996 to 3.4 million visits in 2010.

The data also show that prescriptions of penicillin, the antibiotic recommended to treat strep throat, remained at 9 percent while prescribing for azithromycin, a more expensive antibiotic, increased from being too infrequent to measure reliably in1997-1998 to 15 percent of visits in 2009-2010.

The researchers also noted an increase in the antibiotic prescribing rate in emergency rooms, from 69 percent to 73 percent, during the same 14-year period.

"In addition to contributing to the prevalence of antibiotic resistant bacteria, unnecessary use of antibiotics also adds financial cost to the health care system and causes adverse effects for those taking the medication," said Barnett. Most sore throats and cases of acute bronchitis should be treated with rest and fluids and do not require a visit to the doctor," he added.

In light of these findings, research efforts are now underway to develop and implement interventions that reduce inappropriate antibiotic prescribing for respiratory infections.


Story Source:

The above story is based on materials provided by Brigham and Women's Hospital. Note: Materials may be edited for content and length.


Journal Reference:

  1. Michael L. Barnett. Antibiotic Prescribing to Adults With Sore Throat in the United States, 1997-2010. JAMA Internal Medicine, 2013; DOI: 10.1001/jamainternmed.2013.11673

Cite This Page:

Brigham and Women's Hospital. "High rates of unnecessary prescribing of antibiotics continue." ScienceDaily. ScienceDaily, 3 October 2013. <www.sciencedaily.com/releases/2013/10/131003121256.htm>.
Brigham and Women's Hospital. (2013, October 3). High rates of unnecessary prescribing of antibiotics continue. ScienceDaily. Retrieved April 24, 2014 from www.sciencedaily.com/releases/2013/10/131003121256.htm
Brigham and Women's Hospital. "High rates of unnecessary prescribing of antibiotics continue." ScienceDaily. www.sciencedaily.com/releases/2013/10/131003121256.htm (accessed April 24, 2014).

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