Acute bronchitis with COPD exacerbations
Antibiotic treatment for COPD exacerbations and acute uncomplicated bronchitis with signs of a bacterial infection should last no longer than 5 days. The authors define this condition as an acute respiratory infection with a normal chest x-ray, most often caused by a virus. Although patients with bronchitis do not automatically need antibiotics if there’s no evidence of pneumonia, the authors did advise antibiotics in cases involving COPD and a high likelihood of bacterial infection. Clinicians should base their choice of antibiotics on the most common bacterial etiology: Haemophilus influenzae, Streptococcus pneumoniae, and Moraxella catarrhalis. Ideal candidates for therapy may include aminopenicillin with clavulanic acid, a macrolide, or a tetracycline.
Community-acquired pneumonia
The initial course of antibiotics should be at least 5 days for pneumonia and only extended after considering validated evidence of the patient’s clinical stability, such as resuming normal vital signs, mental activity, and the ability to eat. Multiple randomized, controlled trials have shown no improved benefit from longer courses, though longer courses are linked to increased adverse events and mortality.
Again, antibiotics used should “cover common pathogens, such as S. pneumoniae, H. influenzae, Mycoplasma pneumoniae, and Staphylococcus aureus, and atypical pathogens, such as Legionella species,” the authors wrote. Options include “amoxicillin, doxycycline, or a macrolide for healthy adults or a beta-lactam with a macrolide or a respiratory fluoroquinolone in patients with comorbidities.”
UTIs: Uncomplicated cystitis and pyelonephritis
For women’s bacterial cystitis – 75% of which is caused by Escherichia coli – the guidelines recommend nitrofurantoin for 5 days, trimethoprim-sulfamethoxazole for 3 days, or fosfomycin as a single dose. For uncomplicated pyelonephritis in both men and women, clinicians can consider fluoroquinolones for 5-7 days or trimethoprim-sulfamethoxazole for 14 days, depending on antibiotic susceptibility.
This recommendation does not include UTIs in women who are pregnant or UTIs with other functional abnormalities present, such as obstruction. The authors also intentionally left out acute bacterial prostatitis because of its complexity and how long it can take to treat.
Cellulitis
MRSA, which has been increasing in prevalence, is a leading cause of skin and soft-tissue infections, such as necrotizing infections, cellulitis, and erysipelas. Unless the patient has penetrating trauma, evidence of MRSA infection elsewhere, injection drug use, nasal colonization of MRSA, or systemic inflammatory response syndrome, the guidelines recommend a 5- to 6-day course of cephalosporin, penicillin, or clindamycin, extended only if the infection has not improved in 5 days. Further research can narrow down the most appropriate treatment course.
This guidance does not apply to purulent cellulitis, such as conditions with abscesses, furuncles, or carbuncles that typically require incision and drainage.
Continuing to get the message out
Dr. Fincher emphasized the importance of continuing to disseminate messaging for clinicians about reducing unnecessary antibiotic use.
“In medicine we are constantly bombarded with new information. It is those patients and disease states that we see and treat every day that are especially important for us as physicians and other clinicians to keep our skills and knowledge base up to date when it comes to use of antibiotics,” Dr. Fincher said in an interview. “We just need to continue to educate and push out the data, guidelines, and recommendations.”
Dr. Nolt added that it’s important to emphasize how to translate these national recommendations into local practices since local guidance can also raise awareness and encourage local compliance.
Other strategies for reducing overuse of antibiotics “include restriction on antibiotics available at health care systems (formulary restriction), not allowing use of antibiotics unless there is discussion about the patient’s case (preauthorization), and reviewing cases of patients on antibiotics and advising on next steps (prospective audit and feedback),” she said.
The research was funded by the ACP. Dr. Lee has received personal fees from this news organization and Prime Education. Dr. Fincher owns stock in Johnson & Johnson and Procter and Gamble. Dr. Nolt and the article’s coauthors disclosed no relevant financial relationships.
A version of this article first appeared on Medscape.com.