Place the following events in the correct sequence of events when ketoacids increase in the blood of a diabetic.Not all options are used in the answers.
1)serum pH decreases
2)serum bicarbonate decreases
3)PCO₂ decreases
4)respiration decreases
5)respiration increases
6)serum pH increases
7)urine pH decreases

Question

Quizplus · Accepted Answer

When ketoacids increase in the blood of a diabetic, the serum bicarbonate reacts with the ketoacids to form ketone bodies, leading to a decrease in serum bicarbonate (2). This causes a compensatory increase in respiration to get rid of excess CO₂, which decreases the PCO₂ (3) and causes an increase in serum pH (6). However, the ketone bodies that are formed contribute to an increase in the acidity of the blood, eventually leading to a decrease in serum pH (1). As the body attempts to buffer the excess hydrogen ions, it excretes them in the urine, leading to a decrease in urine pH (7). Respiration may eventually decrease (4) due to the acidosis-induced depression of the central nervous system, but this is not necessarily a consistent feature of the condition. Therefore, the correct sequence of events is 2, 1, 5, 3, 7, 6 (Choice C).

Place the Following Events in the Correct Sequence of Events