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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...
Acute Pyelonephritis II: Diagnostic Studies and Management01:28

Acute Pyelonephritis II: Diagnostic Studies and Management

Introduction:For diagnosing acute pyelonephritis, a comprehensive patient history is collected to identify symptoms such as dysuria, frequent or urgent urination, flank pain, or costovertebral angle (CVA) tenderness that may suggest a kidney infection.Physical ExaminationDuring the physical examination, CVA tenderness is assessed. This involves gentle percussion over the costovertebral angle, where tenderness often indicates a kidney infection.Diagnostic TestsUrinalysis: Used to identify white...
Antimicrobial Effectiveness01:28

Antimicrobial Effectiveness

The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
Development of Antibiotic Resistance01:30

Development of Antibiotic Resistance

Antibiotic resistance is a major public health concern that arises when bacteria evolve mechanisms to withstand the effects of antibiotic treatments. This resistance can be intrinsic, acquired through genetic mutations, or transferred between bacteria via horizontal gene transfer. The development of antibiotic resistance poses significant challenges in treating bacterial infections and necessitates ongoing research to develop new therapeutic strategies.Intrinsic resistance occurs when bacterial...
Combined Effects of Drugs: Synergism01:27

Combined Effects of Drugs: Synergism

Synergism is a useful mechanism where combining two or more drugs is more effective than each constituent used alone. Such combinations are also called supra-additive interactions. The drugs collectively enhance the final therapeutic effect by acting on different targets. Another advantage is that the low dose of each constituent drug is sufficient to achieve the desired effect. This helps reduce the duration of therapy and lower the adverse effects of these drugs.
Such synergistic combinations...

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Related Experiment Video

Updated: Jul 2, 2026

Design of Cecal Ligation and Puncture and Intranasal Infection Dual Model of Sepsis-Induced Immunosuppression
07:30

Design of Cecal Ligation and Puncture and Intranasal Infection Dual Model of Sepsis-Induced Immunosuppression

Published on: June 15, 2019

New developments in antimicrobial use in sepsis.

Daniel R Kaul1, Curtis D Collins, Robert C Hyzy

  • 1Division of Infectious Diseases, University of Michigan Medical Center, Ann Arbor, MI 48109-0378, USA. kauld@umich.edu

Current Pharmaceutical Design
|August 12, 2008
PubMed
Summary
This summary is machine-generated.

Antimicrobial resistance is rising, impacting sepsis treatment. Clinicians must consider MRSA and multi-drug resistant gram-negative bacteria, prioritizing local sensitivity data for effective sepsis management.

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Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
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Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses

Published on: August 30, 2018

Related Experiment Videos

Last Updated: Jul 2, 2026

Design of Cecal Ligation and Puncture and Intranasal Infection Dual Model of Sepsis-Induced Immunosuppression
07:30

Design of Cecal Ligation and Puncture and Intranasal Infection Dual Model of Sepsis-Induced Immunosuppression

Published on: June 15, 2019

Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses
11:17

Multiplex Therapeutic Drug Monitoring by Isotope-dilution HPLC-MS/MS of Antibiotics in Critical Illnesses

Published on: August 30, 2018

Area of Science:

  • Infectious Diseases
  • Clinical Microbiology
  • Pharmacology

Background:

  • Rising antimicrobial resistance (AMR) trends and evolving epidemiology necessitate changes in sepsis management.
  • Increased prevalence of community-associated Methicillin-resistant Staphylococcus aureus (MRSA) and hospital-acquired multi-drug resistant gram-negative bacteria complicates treatment.
  • Challenges include vancomycin's declining efficacy and limited development of new gram-negative agents.

Purpose of the Study:

  • To review current trends in antimicrobial resistance, epidemiology, and drug development affecting sepsis treatment.
  • To highlight the challenges posed by resistant pathogens like MRSA, Pseudomonas aeruginosa, and Acinetobacter baumannii.
  • To emphasize the shift towards personalized and data-driven antimicrobial selection in septic patients.

Main Methods:

  • Review of recent epidemiological data on antimicrobial resistance patterns.
  • Analysis of trends in antimicrobial drug development and clinical effectiveness.
  • Re-evaluation of existing treatment guidelines and therapeutic strategies for sepsis.

Main Results:

  • Community-acquired sepsis now requires consideration of empiric MRSA coverage.
  • Vancomycin effectiveness is decreasing, with no clear superior alternatives for Gram-positive infections.
  • Limited new drugs for Gram-negative infections, leading to reliance on older, toxic agents or combination therapy.
  • Emerging consensus supports using local antimicrobial sensitivity data for empiric therapy and combination treatment decisions.

Conclusions:

  • Sepsis management must adapt to the changing landscape of antimicrobial resistance.
  • Local antimicrobial sensitivity data is crucial for guiding empiric and definitive treatment choices.
  • A personalized approach, considering pathogen resistance and drug availability, is essential for optimizing sepsis care.