Questions: 6. What most likely killed Mr. Jones? Allergic reaction to treatment with mixture of IV antibiotics Stroke due to blockage by loosened piece of biofilm Chronic endocarditis Untreated MRSA skin infection

The answer is the first one: Allergic reaction to treatment with mixture of IV antibiotics.

Explanation for each option:

• Allergic reaction to treatment with mixture of IV antibiotics: This is a plausible cause of death if Mr. Jones had a severe allergic reaction, such as anaphylaxis, to the antibiotics administered. Such reactions can be life-threatening and occur rapidly after exposure to the allergen.

• Stroke due to blockage by loosened piece of biofilm: While biofilms can contribute to infections and complications, a stroke caused by a biofilm is less common. Strokes are typically caused by blood clots or bleeding in the brain, not directly by biofilms.

• Chronic endocarditis: This is a serious condition that can lead to death if untreated or if complications arise. However, the term "chronic" suggests a long-term condition, and the question asks for the most likely immediate cause of death.

• Untreated MRSA skin infection: While MRSA infections can be severe and potentially fatal, the question implies a more immediate cause of death. An untreated skin infection would likely lead to complications over time rather than an immediate fatal event.

In summary, the most immediate and likely cause of death among the options provided is an allergic reaction to the IV antibiotics.