Neonatal acid base balance and disturbances

Area of Science:

• Nephrology
• Neonatal Physiology
• Biochemistry

Background:

• Growing neonates require protein, leading to acid production from sulfur-containing amino acid metabolism.
• Bone mineralization (hydroxyapatite formation) also contributes to acid production in infants.
• Neonates must excrete 2-3 mEq of acid/kg/day to prevent acidosis.

Purpose of the Study:

• To review renal mechanisms for acid excretion in neonates.
• To discuss the developmental regulation of these acid-base balance processes.
• To explain the basis of inherited disorders affecting neonatal acidification.

Main Methods:

• Review of existing literature on renal acid-base physiology in neonates.
• Analysis of developmental changes in kidney acid-secreting mechanisms.
• Examination of genetic factors contributing to neonatal acidosis.

Main Results:

• Neonatal kidney acid excretion mechanisms undergo complex maturation.
• Premature neonates are at higher risk for acidosis due to immature renal function.
• Gastrointestinal disturbances can cause bicarbonate loss, necessitating renal compensation.

Conclusions:

• The neonatal kidney plays a critical role in acid-base balance through acid excretion and bicarbonate production.
• Developmental immaturity and inherited disorders pose significant risks for neonatal acidosis.
• Understanding these mechanisms is crucial for managing acid-base disturbances in infants.