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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...
Staphylococcal Skin Infections01:29

Staphylococcal Skin Infections

Staphylococcus aureus is a Gram-positive coccus that resides harmlessly on the skin and mucous membranes of healthy individuals. When the skin barrier is breached, it can shift from a commensal to an opportunistic pathogen. This transition is facilitated by surface adhesins, such as clumping factor B and S. aureus surface protein G (SasG), which bind to structural proteins, including loricrin and cytokeratin, in the damaged epidermis. Protein A, another key factor, binds the Fc region of...
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...
Suctioning the Nasopharyngeal Airway01:29

Suctioning the Nasopharyngeal Airway

Nasopharyngeal suctioning is a procedure to remove secretions from the upper part of the respiratory tract that the patient cannot clear independently. It helps maintain airway patency and prevents complications such as aspiration pneumonia.
Equipment Required
Epistaxis01:30

Epistaxis

Epistaxis, or nosebleeds, occurs when small, swollen blood vessels in the nasal mucous membrane rupture. Typically, the anterior septum is the primary site of occurrence.
Etiology
Possible causes of this condition include high blood pressure, trauma, low humidity, upper respiratory tract infections, allergies, foreign bodies, nasal inhalation of corticosteroids or illicit drugs, excessive use of decongestant nasal sprays, facial or nasal surgery, anatomic malformation, tumors, or systemic...
Mitral Stenosis III: Medical Management01:26

Mitral Stenosis III: Medical Management

Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...

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Related Experiment Video

Updated: Jul 19, 2026

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

Subcutaneous Infection of Methicillin Resistant Staphylococcus Aureus (MRSA)

Published on: February 9, 2011

Methicillin resistant Staphylococcus aureus: is it a problem for nasal surgery?

A Sharma1, C Philpott, L Pope

  • 1Department of Ear, Nose and Throat Surgery, Addenbrooke's NHS Trust, Cambridge and West Suffolk NHS Trust, Bury St. Edmunds, UK. aloksharma@mac.com

The Journal of Laryngology and Otology
|October 17, 2006
PubMed
Summary

Methicillin-resistant Staphylococcus aureus (MRSA) is increasingly common in the UK. While MRSA can colonize the nose, infections after nasal surgery remain rare, despite evolving antibiotic resistance.

Related Experiment Videos

Last Updated: Jul 19, 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
  • Microbiology
  • Surgical Infections

Background:

  • Methicillin-resistant Staphylococcus aureus (MRSA) prevalence is rising in the UK.
  • MRSA exhibits increasing resistance to antibiotics, leading to higher infection rates.
  • Staphylococcus aureus, including MRSA, commonly colonizes the nasal cavity.

Purpose of the Study:

  • To review the literature on MRSA infections.
  • To examine the relationship between MRSA and the nasal cavity.
  • To assess the incidence of MRSA following nasal surgery.

Main Methods:

  • Literature review.
  • Analysis of MRSA prevalence and resistance patterns.
  • Evaluation of MRSA occurrence in relation to nasal surgery.

Main Results:

  • MRSA is increasingly prevalent in the UK compared to methicillin-sensitive Staphylococcus aureus (MSSA).
  • Emerging MRSA strains show resistance to multiple antibiotics.
  • Staphylococcal infections, particularly MRSA, are infrequent complications of nasal surgery.

Conclusions:

  • Despite nasal colonization by MRSA, post-surgical infections are rare.
  • The study highlights the need for ongoing surveillance of MRSA.
  • Understanding MRSA's role in nasal surgery complications requires further investigation.