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Updated: Jan 17, 2026
Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus MRSA
Published on: February 9, 2011
Patients with tracheostomy as a primary risk factor for methicillin-resistant Staphylococcus aureus carriage in
Ryo Itazu1, Hisako Yano2, Yoshihito Fujita3
1Aichi Medical University College of Nursing, Nagakute, Aichi, Japan.
Abstract:
Methicillin-resistant Staphylococcus aureus (MRSA) is often found in intensive care units and has a negative impact on patients. In order to prevent cross-transmission of MRSA from potential MRSA carriers to noncarriers, we investigated risk factors for MRSA carriage in patients admitted to the ICU on an emergency basis who are at high risk for MRSA spread. A retrospective observational study was conducted on adult patients who were admitted in an emergency to the ICU between November 1, 2019 and February 28, 2022 and remained in the ICU for at least 48 hours. Patients with a history of MRSA detection or MRSA detected within 48 hours of admission to the ICU were defined as the "carrier" group, while other patients were defined as the "noncarrier" group. Risk factors associated with MRSA carriage in patients admitted to the ICU on an emergency basis were examined by collecting observable factors from medical records during the patient's admission. The total number of eligible emergency admissions was 303 patients; 190 (63%) were male, and their mean age (±standard deviation) was 73 (13.9) years. There were 45 patients (17%) in the MRSA-carrier group. Logistic regression analysis showed that tracheostomy was an independent risk factor (odds ratio: 4.9, 95% confidence interval: 1.7-14.2, P = .003). This study revealed that patients with tracheostomies were more likely to carry MRSA into patients admitted to the ICU on an emergency basis. For these patients, infection control measures for MRSA should be implemented 48 hours after ICU admission.
Insights
Tracheostomy is a significant risk factor for Methicillin-resistant Staphylococcus aureus (MRSA) carriage in emergency intensive care unit (ICU) admissions. Implementing infection control measures for these high-risk patients is crucial to prevent MRSA spread.
Area of Science:
- Infectious Diseases
- Critical Care Medicine
- Epidemiology
Background:
- Methicillin-resistant Staphylococcus aureus (MRSA) poses a significant threat in intensive care units (ICUs), leading to adverse patient outcomes.
- Preventing cross-transmission of MRSA from carriers to non-carriers is a critical infection control challenge.
- Identifying risk factors for MRSA carriage in high-risk ICU populations is essential for targeted interventions.
Purpose of the Study:
- To investigate the risk factors associated with Methicillin-resistant Staphylococcus aureus (MRSA) carriage.
- To identify specific patient characteristics that predict MRSA carriage in emergency ICU admissions.
- To inform infection control strategies for preventing MRSA transmission in ICUs.
Main Methods:
- A retrospective observational study was conducted on adult patients admitted emergently to the ICU.
- Patients were categorized into 'carrier' and 'noncarrier' groups based on MRSA detection within 48 hours of admission.
- Logistic regression analysis was used to identify independent risk factors for MRSA carriage.
Main Results:
- The study included 303 emergency ICU admissions (63% male, mean age 73 years).
- 17% of patients (45/303) were identified as MRSA carriers.
- Tracheostomy was found to be an independent risk factor for MRSA carriage (OR: 4.9, 95% CI: 1.7-14.2, P=0.003).
Conclusions:
- Patients with tracheostomies admitted emergently to the ICU are significantly more likely to carry MRSA.
- Early implementation of MRSA infection control measures, starting 48 hours post-ICU admission, is recommended for patients with tracheostomies.
- These findings highlight the need for enhanced surveillance and targeted infection prevention strategies in high-risk ICU populations.
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