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Diagnosing Acidosis and Alkalosis01:24

Diagnosing Acidosis and Alkalosis

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Diagnosing acid-base imbalances involves systematically analyzing arterial blood samples, focusing on three key measurements: pH, bicarbonate (HCO3−) concentration, and carbon dioxide partial pressure (PCO2). This analysis follows a four-step process that helps identify the imbalance's underlying cause and nature.
First, the pH level is assessed to determine whether the blood pH is normal (7.35–7.45), low (acidosis), or high (alkalosis).
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Closing the gap before using L-lactate to guide newborn care.

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Sodium L-lactate (NaL) supplementation improved acid-base balance in preterm infants with metabolic acidosis. This study highlights NaL

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Area of Science:

  • Neonatal Medicine
  • Biochemistry
  • Neuroscience

Background:

  • Metabolic acidosis is a common complication in preterm infants.
  • Lactate is increasingly recognized for roles beyond metabolism, including cellular signaling and neuroprotection.
  • Sodium L-lactate (NaL) is being explored for therapeutic potential in neonates.

Purpose of the Study:

  • To evaluate the efficacy and safety of sodium L-lactate (NaL) supplementation in preterm infants with metabolic acidosis.
  • To discuss the broader implications of lactate's role in neonatal physiology and potential applications in conditions like neonatal hypoxia-ischemia (NHI).

Main Methods:

  • The study involved the administration of NaL to preterm infants experiencing metabolic acidosis.
  • Analysis of acid-base balance and adverse effects was conducted.
  • The commentary discusses findings in the context of existing literature and animal models (e.g., Rice-Vannucci model).

Main Results:

  • NaL supplementation effectively improved acid-base balance in preterm infants.
  • No adverse effects were observed with NaL administration.
  • Lactate's conversion to bicarbonate and support for mitochondrial function are proposed mechanisms for its benefits.

Conclusions:

  • Sodium L-lactate shows promise as a therapeutic agent for metabolic acidosis in preterm neonates.
  • Lactate's multifaceted roles in cellular metabolism, signaling, and neuroprotection warrant further investigation.
  • Future research should compare NaL with sodium acetate and involve larger, multicenter trials with long-term follow-up.