Question

Normal fetal scalp pH in labor is ..... , and values below ...... indicate true acidosis.

A. 7.35; 7.20
B. 7.40; 7.25
C. 7.45; 7.30
D. 7.50; 7.35

Answer 1

Normal fetal scalp pH in labor is 7.35, and values below 7.20 indicate true acidosis. The normal range for arterial blood pH is 7.35 to 7.45, with values below 7.35 considered acidotic.

Step-by-step explanation:

The student asked about the normal fetal scalp pH in labor and the values that indicate true acidosis. The normal arterial blood pH range is from 7.35 to 7.45. A pH below 7.35 is considered acidosis, which means for the fetus, a scalp pH below this level would indicate a state of acidosis. Based on the standard pH range, the correct answer to the student's question is option A: Normal fetal scalp pH in labor is 7.35, and values below 7.20 indicate true acidosis.