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Parenterally administered amino acids decrease acute mortality in fasting patients with aspiration pneumonia: A

Takashi Ogasawara1, Yuki Hiraoka1, Natsuko Hosoya2

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Clinical Nutrition ESPEN
|January 30, 2025
PubMed
Summary

Early parenteral nutrition (PN) with amino acids (AA) may reduce 30-day mortality in patients with aspiration pneumonia. This study found that providing AA in PN improved outcomes for fasting patients.

Keywords:
Amino acidAspiration pneumoniaNursing and healthcare-associated pneumoniaParenteral nutrition

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Area of Science:

  • Clinical Nutrition
  • Critical Care Medicine
  • Pulmonology

Background:

  • Aspiration pneumonia necessitates fasting, leading to parenteral nutrition (PN) use.
  • Optimal PN composition for these patients is not well-established.
  • Amino acids (AA) are a key component of PN, but their specific role in aspiration pneumonia is unclear.

Purpose of the Study:

  • To investigate the impact of PN with amino acids (AA) on 30-day mortality in patients with aspiration pneumonia.
  • To determine if early AA supplementation influences survival rates in hospitalized patients with aspiration pneumonia.

Main Methods:

  • Retrospective study of 115 patients with aspiration pneumonia receiving PN.
  • Patients divided into groups receiving PN with AA (>15 g/day) or without AA (0-15 g/day).
  • Primary endpoint: 30-day in-hospital mortality, adjusted for clinical factors.

Main Results:

  • Patients receiving PN with AA had significantly higher energy and protein intake.
  • Despite lower baseline albumin, the AA group showed improved nutritional support.
  • Adjusted analysis revealed a significantly lower 30-day mortality in the AA group (HR 0.31).

Conclusions:

  • Early administration of PN with amino acids appears beneficial for fasting patients with aspiration pneumonia.
  • Supplementation with AA in PN may be a crucial factor in reducing mortality for this patient population.