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Related Concept Videos

Clinical Significance of Antibiotic Resistance01:25

Clinical Significance of Antibiotic Resistance

Methicillin-resistant Staphylococcus aureus (MRSA) presents a critical public health threat, arising from its capacity to resist β-lactam antibiotics due to acquisition of the mecA gene within the staphylococcal cassette chromosome mec (SCCmec). This gene encodes penicillin-binding protein 2a (PBP2a), which impairs binding efficacy of methicillin and other β-lactams. MRSA has evolved into distinct clonal lineages impacting humans and animals alike, reinforcing its significance within the One...
Mechanism of Antibiotic Resistance in MRSA01:25

Mechanism of Antibiotic Resistance in MRSA

Antibiotic resistance in bacteria arises when microorganisms evolve the ability to withstand drugs designed to kill them or inhibit their growth, rendering once-effective treatments useless. This phenomenon, driven by genetic change and selection under antibiotic exposure, poses a profound threat to modern medicine. Mechanisms include drug-inactivating enzymes (e.g., β-lactamases), efflux pumps that eject antibiotics, mutations altering antibiotic targets, decreased drug uptake, and acquisition...

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Related Experiment Video

Updated: May 21, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
12:18

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)

Published on: February 9, 2011

Predicting risk for death from MRSA bacteremia.

Mina Pastagia1, Lawrence C Kleinman, Eliesel G Lacerda de la Cruz

  • 1The Rockefeller University, New York, New York 10065, USA. minapastagia@yahoo.com

Emerging Infectious Diseases
|June 20, 2012
PubMed
Summary
This summary is machine-generated.

Predictors of death in Methicillin-resistant Staphylococcus aureus (MRSA) bacteremia include older age and organ impairment. Infectious disease specialist consultation was linked to lower mortality risk in this study.

Related Experiment Videos

Last Updated: May 21, 2026

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)
12:18

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)

Published on: February 9, 2011

Area of Science:

  • Infectious Diseases
  • Clinical Medicine
  • Epidemiology

Background:

  • Methicillin-resistant Staphylococcus aureus (MRSA) bacteremia poses a significant mortality risk.
  • Identifying factors associated with fatal outcomes is crucial for improving patient management.

Purpose of the Study:

  • To identify clinical predictors of mortality in patients with MRSA bacteremia.
  • To analyze the association between patient characteristics, infection severity, and outcomes.

Main Methods:

  • Retrospective cohort study of 699 MRSA bacteremia episodes (2002-2007) at an academic medical center.
  • Data collected via chart reviews, hospital databases, and analysis of MRSA strains.
  • Regression risk analysis employed to determine associations with death.

Main Results:

  • Overall mortality rate was 31.5% (190 deaths).
  • Independent predictors of increased mortality included older age, nursing home residence, severe bacteremia, and organ impairment.
  • Consultation with an infectious disease specialist was associated with a reduced risk of death.
  • MRSA strain types did not show an association with mortality risk.

Conclusions:

  • Several clinical factors are significantly associated with mortality in MRSA bacteremia.
  • Early identification and management of these risk factors, alongside specialist consultation, may improve survival rates.
  • Further research into strain-specific virulence is warranted despite no observed association in this cohort.