What condition indicates acidosis?

• A. Blood pH below 7.25
• B. Blood pH below 7.35
• C. Blood pH above 7.45
• D. Blood pH above 7.55

Answer: (B)

Acidosis is a condition characterized by an increase in acidity in the blood, which can be determined by measuring the blood pH. A blood pH below 7.35 indicates an excessively acidic environment, thus confirming acidosis.

The norm for blood pH typically ranges from 7.35 to 7.45. Values below this range suggest a shift towards acidity, hence supporting the diagnosis of acidosis. In contrast, a blood pH below 7.25 indicates a more severe level of acidosis, which could be classified as severe acidosis, but the crucial cutoff for defining acidosis in general terms is recognized at 7.35.

Higher pH levels, such as those above 7.45, would indicate alkalosis, the opposite condition marked by decreased acidity, while values over 7.55 indicate a more severe alkalotic state. Therefore, the determination of acidosis is specifically focused on the pH threshold of 7.35, making it the correct choice in identifying acidosis.