Difficult-to-Treat Antibiotic-Resistant Gram-Negative Pathogens in the Intensive Care Unit: Epidemiology, Outcomes,

Jeffrey R Strich1,2, Sameer S Kadri1

  • 1Critical Care Medicine Department, National Institutes of Health Clinical Center, Bethesda, Maryland.

Insights

Highly resistant gram-negative infections threaten intensive care unit patients globally. Understanding their epidemiology and risk factors is crucial for effective treatment and control.

Area of Science:

  • Infectious Diseases
  • Critical Care Medicine
  • Microbiology

Background:

  • Antibiotic resistance in gram-negative pathogens is a significant global health issue.
  • These infections pose a severe threat to intensive care unit (ICU) patients, increasing mortality and healthcare costs.
  • Therapeutic options are often limited, with antibiotics having suboptimal efficacy or toxicity.

Purpose of the Study:

  • To review the global epidemiology of highly resistant gram-negative infections in the ICU.
  • To discuss the associated burden, risk factors, and current treatment strategies.
  • To provide insights for controlling outbreaks and guiding clinical management.

Main Methods:

  • This is a review article.
  • Literature search on global epidemiology, risk factors, and treatment of highly resistant gram-negative infections in ICUs.
  • Synthesis of current knowledge and clinical data.

Main Results:

  • Highly resistant gram-negative pathogens are a growing concern in ICUs worldwide.
  • Infections lead to increased mortality, prolonged hospital stays, and substantial economic burden.
  • Risk factors include prior antibiotic exposure, comorbidities, and device use.

Conclusions:

  • Effective control requires a thorough understanding of resistance mechanisms and epidemiology.
  • Therapeutic strategies must balance efficacy with toxicity, often necessitating novel approaches.
  • Multidisciplinary efforts are essential to combat this escalating global challenge.

Related Concept Videos

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...
267
Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care01:30

Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care

A healthcare provider can diagnose a urinary tract infection (UTI) through several methods:Medical History and Symptoms: The provider will take a detailed medical history and ask about symptoms such as frequent urination, burning sensation during urination, and lower abdominal pain.Urinalysis: A clean-catch urine sample is collected in a sterile container and tested for the presence of bacteria, white blood cells (leukocytes), nitrites, blood, and protein. The presence of leukocytes and...
224
Pneumonia IV: Management01:28

Pneumonia IV: Management

The treatment of pneumonia varies based on its severity and the causative pathogen. Here is a structured approach to managing pneumonia, integrating pharmaceutical and supportive care strategies.
Bacterial Pneumonia Treatment
For bacterial pneumonia, antibiotics serve as the cornerstone of therapy. Initial treatment often begins with empirical antibiotics, tailored to the anticipated causative organism and adjusted based on culture results. Key antibiotic choices include:
713
Urine Studies II: Urine Culture and Sensitivity Test01:26

Urine Studies II: Urine Culture and Sensitivity Test

A urine culture and sensitivity test is a diagnostic procedure used to identify urinary tract bacterial infections and determine the most effective antibiotics for treatment. This test is generally preferred when a patient shows manifestations of a urinary tract infection, such as frequent or painful urination, cloudy or foul-smelling urine, or lower abdominal pain.Purpose of the TestThe primary goals of a urine culture and sensitivity test are to:Determine the specific bacteria causing the...
716
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...
1.1K
Endocarditis IV: Nursing Management01:29

Endocarditis IV: Nursing Management

Infective endocarditis (IE) is a chronic infection of the heart's endocardium, primarily affecting the heart valves. A detailed nursing assessment for a patient with IE involves collecting subjective and objective data to ensure an accurate diagnosis and timely intervention.Subjective DataThe nurse gathers information about the patient's symptoms and complaints during the subjective assessment. Patients with infective endocarditis often report non-specific symptoms that can mimic other...
291