Community-Assoc. S. Aureus Colonization and Recurrent Infection in Pts With Uncomplicated S. Aureus Skin Abscesses
| Status: | Enrolling by invitation |
|---|---|
| Healthy: | No |
| Age Range: | Any - 18 |
| Updated: | 10/27/2017 |
| Start Date: | June 2015 |
| End Date: | July 2017 |
Effect of Antibiotics on Community-Associated Staphylococcus Aureus Colonization and Recurrent Infection in Patients With Uncomplicated S. Aureus Skin Abscesses
Infections due to S. aureus are a major healthcare burden. Currently there is not an
effective way to prevent S. aureus infection. Treatment failure can happen in up to 20% of
patients with SSTI and mean additional cost per patient can be over $1500. Antibiotics are
often prescribed for the treatment of CA-S. aureus SSTI. Current IDSA CA-MRSA guidelines
suggest that incision and drainage alone may be adequate for management of uncomplicated
CA-S. aureus skin abscesses and there is uncertainty about the need of antibiotics. It is not
known whether antibiotics are helpful in decreasing S. aureus colonization rates or
preventing future S. aureus infections. Though resolution of acute abscess after drainage may
be unchanged by antibiotic administration, the impact of managing S. aureus abscess without
antibiotics on ongoing S. aureus colonization and recurrent infection requires further study.
This study seeks to examine whether the management of initial S. aureus abscesses with
incision and drainage in addition to antibiotic therapy is an effective means of preventing
recurrent infection. The prolonged longitudinal follow-up of this study is another unique
characteristic that will enable the investigators to capture data about recurrences of
infections.
effective way to prevent S. aureus infection. Treatment failure can happen in up to 20% of
patients with SSTI and mean additional cost per patient can be over $1500. Antibiotics are
often prescribed for the treatment of CA-S. aureus SSTI. Current IDSA CA-MRSA guidelines
suggest that incision and drainage alone may be adequate for management of uncomplicated
CA-S. aureus skin abscesses and there is uncertainty about the need of antibiotics. It is not
known whether antibiotics are helpful in decreasing S. aureus colonization rates or
preventing future S. aureus infections. Though resolution of acute abscess after drainage may
be unchanged by antibiotic administration, the impact of managing S. aureus abscess without
antibiotics on ongoing S. aureus colonization and recurrent infection requires further study.
This study seeks to examine whether the management of initial S. aureus abscesses with
incision and drainage in addition to antibiotic therapy is an effective means of preventing
recurrent infection. The prolonged longitudinal follow-up of this study is another unique
characteristic that will enable the investigators to capture data about recurrences of
infections.
Methicillin-resistant Staphylococcus aureus (MRSA) was once associated almost exclusively
with healthcare-associated infections. However, new epidemic strains have emerged outside of
the healthcare environment designated community-associated (CA) MRSA. From 1999 to 2005,
hospitalizations for Staphylococcus aureus-related skin and soft tissue infections (SSTI) in
the United States increased 4-fold to nearly 90,000 annually. At Memorial Medical Center
(MMC) Emergency Department (ED) and Express Cares (EC) there have been over 6500 visits in
the last 6 years secondary to SSTI.
Current Infectious Diseases Society of America (IDSA) guidelines suggest incision and
drainage alone (without antibiotics) may be adequate management for uncomplicated MRSA skin
abscesses. However, patients not receiving antibiotics are more likely to develop recurrent
infections, which may be a result of persistent MRSA colonization. The investigators will
conduct a prospective case-control study at MMC ED, EC and MMC primary care clinics of
pediatric patients with skin abscesses comparing outcomes for those who received antibiotics
(cases) versus those who did not (controls). This will not be an intervention study - both
surgical and medical management of patients with skin abscesses will be at the discretion of
the treating physician.
The central hypothesis is that the inclusion of systemic antibiotics in the management of S.
aureus skin abscesses will decrease S. aureus colonization, and subsequently the incidence of
recurrent SSTI in the year following baseline infection. To gain a better understanding of
this problem, the investigators propose the following specific aims:
with healthcare-associated infections. However, new epidemic strains have emerged outside of
the healthcare environment designated community-associated (CA) MRSA. From 1999 to 2005,
hospitalizations for Staphylococcus aureus-related skin and soft tissue infections (SSTI) in
the United States increased 4-fold to nearly 90,000 annually. At Memorial Medical Center
(MMC) Emergency Department (ED) and Express Cares (EC) there have been over 6500 visits in
the last 6 years secondary to SSTI.
Current Infectious Diseases Society of America (IDSA) guidelines suggest incision and
drainage alone (without antibiotics) may be adequate management for uncomplicated MRSA skin
abscesses. However, patients not receiving antibiotics are more likely to develop recurrent
infections, which may be a result of persistent MRSA colonization. The investigators will
conduct a prospective case-control study at MMC ED, EC and MMC primary care clinics of
pediatric patients with skin abscesses comparing outcomes for those who received antibiotics
(cases) versus those who did not (controls). This will not be an intervention study - both
surgical and medical management of patients with skin abscesses will be at the discretion of
the treating physician.
The central hypothesis is that the inclusion of systemic antibiotics in the management of S.
aureus skin abscesses will decrease S. aureus colonization, and subsequently the incidence of
recurrent SSTI in the year following baseline infection. To gain a better understanding of
this problem, the investigators propose the following specific aims:
Inclusion Criteria:
- (1) Children 6 months to 18 years presenting with a skin abscess.
- (2) Positive MRSA or MSSA culture from previous or current abscess
Exclusion Criteria:
- (1) Immunodeficiency;
- (2) Hospitalization within the prior 14 days
- (3) Use of mupirocin, clorhexidine or bleach water baths in the last month
- (4) Systemic antibacterial therapy with anti-staphylococcal activity within the prior
14 days.
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