Biology High School

Which of the following bacteria has an affinity for the heart valves?
Bacillus subtilis
Staphylococcus aureus
Streptococcus mutans
Bordetella pertussis

Answers

Answer 1

Among the given options, the correct answer is Staphylococcus aureus which is the bacterium that has an affinity for the heart valves.

Among the given options, Staphylococcus aureus is the bacterium that has an affinity for the heart valves. Staphylococcus aureus is a Gram-positive bacterium commonly found on the skin and in the nasal passages of humans. It is known to be a pathogenic bacterium that can cause various infections, including endocarditis, which is the infection of the inner lining of the heart and heart valves.

Endocarditis occurs when Staphylococcus aureus enters the bloodstream and reaches the heart valves. The bacteria can attach to the damaged heart valves or artificial heart valves, leading to the formation of a bacterial biofilm. This biofilm provides a protective environment for the bacteria, making it difficult for the immune system and antibiotics to eliminate the infection.

Staphylococcus aureus endocarditis can cause serious complications, such as valve destruction, heart failure, and septic emboli. Prompt diagnosis and appropriate treatment with antibiotics are crucial to prevent further damage and systemic spread of the infection.

In conclusion, Staphylococcus aureus has a particular affinity for the heart valves and can cause endocarditis, a potentially life-threatening condition.

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