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Related Experiment Video

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Transtracheal puncture: a forgotten procedure.

E P Almeida1, A C Almeida2, F F Almeida2

  • 1Departamento de Cirurgia, Faculdade de Medicina, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brasil.

Brazilian Journal of Medical and Biological Research = Revista Brasileira De Pesquisas Medicas E Biologicas
|July 16, 2015
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Summary
This summary is machine-generated.

This study establishes normal alpha-amylase levels in tracheobronchial secretions, a key enzyme for diagnosing salivary aspiration. Transtracheal aspiration proved safe and effective for sample collection in 118 patients.

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Area of Science:

  • Pulmonology
  • Clinical Diagnostics
  • Biochemistry

Background:

  • Transtracheal puncture is a safe, low-cost procedure historically overshadowed by bronchoscopy.
  • Diagnosing salivary aspiration may involve alpha-amylase activity, but normal tracheobronchial secretion values are undefined.
  • Establishing normal enzyme levels is crucial for accurate diagnostic interpretation.

Purpose of the Study:

  • To determine the normal range of alpha-amylase activity in human tracheobronchial secretions.
  • To assess the safety and complication rate of transtracheal puncture in a clinical setting.
  • To validate transtracheal aspiration as a method for obtaining diagnostic samples.

Main Methods:

  • A prospective study evaluated 118 patients undergoing transtracheal puncture prior to bronchoscopy.
  • Patients received sedation and local anesthesia before saline instillation into the tracheobronchial tree.
  • Collected saline was aspirated and analyzed for alpha-amylase levels; complications were meticulously recorded.

Main Results:

  • The mean alpha-amylase level was 1914 ± 240 IU/L, with a median of 1056 IU/L and a range of 24-10,000 IU/L.
  • No major complications, including desaturation, emphysema, arrhythmia, or hemoptysis, were observed in any of the 118 patients.
  • This study provides the first definition of normal alpha-amylase levels in tracheobronchial secretions.

Conclusions:

  • Transtracheal aspiration is a safe and cost-effective procedure for obtaining tracheobronchial samples.
  • The study successfully defined normal alpha-amylase levels, aiding in the diagnosis of salivary aspiration.
  • The findings support the utility of transtracheal aspiration in clinical diagnostics.