Which statement about bacteremia is true?

Which statement about bacteremia is true?

• A. Bacteremia is always continuous with fever spikes.
• B. Bacteremia is never associated with low numbers.
• C. Not all conditions produce continuous bacteremia, and organisms may be present in low numbers.
• D. Blood cultures are never helpful.

Answer: (C)

Bacteremia can be intermittent and occur with only low numbers of organisms in the blood. In many infections the bacteria enter the bloodstream in bursts rather than as a constant presence, so fever and other signs may come and go or be absent at times. The bacterial load in the blood can also be very low, especially early in infection or after partial treatment, which makes detection harder. Because of this, blood cultures are helpful but not foolproof: they work best when enough blood is sampled and taken multiple times from separate sites, ideally before antibiotics are given. This explains why the true statement recognizes both the episodic nature and the potential for low-level bacteremia, rather than insisting it is always continuous or that cultures are never useful.

Bacteremia can be intermittent and occur with only low numbers of organisms in the blood. In many infections the bacteria enter the bloodstream in bursts rather than as a constant presence, so fever and other signs may come and go or be absent at times. The bacterial load in the blood can also be very low, especially early in infection or after partial treatment, which makes detection harder. Because of this, blood cultures are helpful but not foolproof: they work best when enough blood is sampled and taken multiple times from separate sites, ideally before antibiotics are given. This explains why the true statement recognizes both the episodic nature and the potential for low-level bacteremia, rather than insisting it is always continuous or that cultures are never useful.