What is the pH range of amniotic fluid :
**Core Concept**
Amniotic fluid pH is a critical indicator of fetal well-being, reflecting the balance between maternal and fetal acid-base status. The normal pH range of amniotic fluid is influenced by the fetal kidneys, which produce a concentrated urine with a high pH, and the placental transfer of acidic and basic substances.
**Why the Correct Answer is Right**
The pH of amniotic fluid is slightly alkaline, typically ranging from 7.10 to 7.30. This alkaline pH is maintained by the kidneys' ability to excrete hydrogen ions, producing a concentrated urine with a high pH. The placenta also plays a role in regulating amniotic fluid pH by transferring acidic and basic substances. This delicate balance is essential for maintaining fetal health and preventing complications such as acidosis or alkalosis.
**Why Each Wrong Option is Incorrect**
**Option A:** Not applicable, as the correct pH range is not provided.
**Option B:** This option is not correct, as the pH range of amniotic fluid is not acidic.
**Option C:** This option is not correct, as the pH range of amniotic fluid is not neutral.
**Clinical Pearl / High-Yield Fact**
A pH of amniotic fluid below 7.00 or above 7.30 can indicate fetal distress or other complications. Monitoring amniotic fluid pH is an essential aspect of fetal surveillance during pregnancy.
**Correct Answer: C. 7.10 - 7.30**