Which bacterium causes infections in many burn victims?
a. Moraxella catarrhalis
b. Pseudomonas aeruginosa
c. Escherichia coli
d. Bartonella bacilliformis

Verified step by step guidance

1. Identify the context of the problem: The question is about bacterial infections in burn victims.
2. Recall the characteristics of each bacterium listed: Moraxella catarrhalis, Pseudomonas aeruginosa, Escherichia coli, and Bartonella bacilliformis.
3. Consider the typical environments and conditions where each bacterium thrives and causes infections.
4. Focus on Pseudomonas aeruginosa, known for its ability to cause infections in burn victims due to its resistance to antibiotics and ability to thrive in moist environments.
5. Conclude that Pseudomonas aeruginosa is the bacterium most commonly associated with infections in burn victims.

Key Concepts

Pseudomonas aeruginosa

Pseudomonas aeruginosa is a gram-negative bacterium known for its opportunistic pathogenicity, particularly in immunocompromised individuals. It is commonly associated with infections in burn victims due to its ability to thrive in moist environments and resist many antibiotics. This bacterium can cause severe infections, including pneumonia and sepsis, making it a significant concern in clinical settings.

Opportunistic Infections

Opportunistic infections occur when pathogens take advantage of a host's weakened immune system, often due to underlying health conditions or injuries. In burn victims, the skin barrier is compromised, allowing bacteria like Pseudomonas aeruginosa to invade and cause infections. Understanding the nature of opportunistic infections is crucial for effective treatment and prevention in vulnerable populations.

Antibiotic Resistance

Antibiotic resistance refers to the ability of bacteria to withstand the effects of medications that once effectively treated infections. Pseudomonas aeruginosa is notorious for its multidrug resistance, complicating treatment options for infections it causes. This resistance is often due to genetic mutations and the acquisition of resistance genes, highlighting the importance of monitoring and developing new therapeutic strategies.