What is the normal pH range for arterial blood in term newborns?

What is the normal pH range for arterial blood in term newborns?

• A. 7.10-7.20
• B. 7.20-7.34
• C. 7.35-7.45
• D. 7.40-7.50

Answer: (B)

The normal pH range for arterial blood in term newborns falls between 7.35 and 7.45. This range reflects the balance between carbon dioxide and bicarbonate in the blood, which is vital for maintaining the acid-base equilibrium essential for physiological processes. In newborns, particularly those born at term, the body has adapted to life outside the womb, and their blood pH should typically align with that of healthy adults. A pH below 7.35 is considered acidosis, whereas a pH above 7.45 indicates alkalosis. Maintaining this balance is crucial for successful metabolic function and oxygen delivery to tissues. Understanding the acceptable pH range helps in identifying potential neonatal complications such as respiratory distress or metabolic disturbances. Thus, option B does not accurately represent the normal pH range for term newborns. The correct choice highlights the typical healthy pH levels that healthcare professionals should monitor in this vulnerable population.

The normal pH range for arterial blood in term newborns falls between 7.35 and 7.45. This range reflects the balance between carbon dioxide and bicarbonate in the blood, which is vital for maintaining the acid-base equilibrium essential for physiological processes.

In newborns, particularly those born at term, the body has adapted to life outside the womb, and their blood pH should typically align with that of healthy adults. A pH below 7.35 is considered acidosis, whereas a pH above 7.45 indicates alkalosis. Maintaining this balance is crucial for successful metabolic function and oxygen delivery to tissues.

Understanding the acceptable pH range helps in identifying potential neonatal complications such as respiratory distress or metabolic disturbances. Thus, option B does not accurately represent the normal pH range for term newborns. The correct choice highlights the typical healthy pH levels that healthcare professionals should monitor in this vulnerable population.