NREMT Paramedic Practice

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In relation to pH, what physiological state is associated with a high level of lactic acid?

  1. Alkalosis

  2. Normal pH

  3. Acidosis

  4. Neutral pH

The correct answer is: Acidosis

A high level of lactic acid is associated with acidosis because lactic acid is a byproduct of anaerobic metabolism. When lactic acid accumulates in the body, it can lead to a decrease in pH, causing the blood to become more acidic. This condition is often seen in situations where oxygen supply is limited, such as strenuous exercise or shock. As the body produces excess lactic acid, it overwhelms the buffering capacity of the blood, resulting in a lower pH and the physiological state referred to as lactic acidosis. This is a critical concept in understanding the body’s response to anaerobic conditions and how it affects acid-base balance.

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