In DKA management, bicarbonate therapy is not routinely recommended unless the pH is below which threshold?

• A. 7.0
• B. 7.2
• C. 6.9
• D. 7.3

Answer: (C)

In DKA management, bicarbonate is not given routinely because the risks often outweigh the benefits unless the acidosis is life-threatening. The small amount of bicarbonate can help raise the pH, but it can also cause unwanted consequences such as shifts of potassium into cells (which can worsen total body potassium depletion when insulin is started), a potential for rapid changes in brain chemistry that may worsen cerebral edema, and the production of additional CO2 that the body has to eliminate, potentially delaying correction of acidosis.

Because of these risks, bicarbonate therapy is reserved for severe acidemia, specifically when the pH falls below 6.9. At higher pH levels, the body’s compensatory mechanisms and standard DKA treatments—fluid resuscitation, insulin, and electrolyte management—are preferred, and bicarbonate is unlikely to improve outcomes.