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Research ArticleOriginal Research

The Clinical Significance of Patient Specimen Transport Modality: Pneumatic Tube System Impact on Blood Gas Analytes

Louanne M Carabini, Jacob Nouriel, Ricardo Diaz Milian, Erin R Glogovsky, Robert J McCarthy, Thomas G Handler and Michael L Ault
Respiratory Care August 2016, respcare.04765; DOI: https://doi.org/10.4187/respcare.04765
Louanne M Carabini
Northwestern Medicine, Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, IL
MD
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  • For correspondence: [email protected]
Jacob Nouriel
Wayne State University School of Medicine, Detroit, MI
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Ricardo Diaz Milian
Department of Anesthesiology, Georgia Regents University, Augusta, GA
MD
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Erin R Glogovsky
Department of Respiratory Care, Riley Hospital for Children at Indiana University Health, Indianapolis, IN
MSc RRT
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Robert J McCarthy
Northwestern Medicine, Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, IL
PharmD
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Thomas G Handler
Department of Respiratory Care, Rehabilitation Institute of Chicago, Chicago, IL.
RRT
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Michael L Ault
Northwestern Medicine, Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Chicago, IL
MD
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Abstract

INTRODUCTION: A pneumatic tube system (PTS) is a cost-effective, rapid transport modality that utilizes induced pressure changes. We evaluated the clinical importance of 2 transport modalities, human courier and PTS, for blood gas specimens.

METHODS: Following open heart surgery, 35 simultaneous pairs of arterial and venous blood gas specimens were analyzed from 20 subjects. Of each pair, one specimen was transported to the blood gas laboratory via a human courier and the other via a SwissLog PTS. Transport modalities were compared using the Bland-Altman limits of agreement method.

RESULTS: Compared with the walked specimen, the bias for PaCO2 was −8.0 mm Hg (95% CI, −40.0 to 24.5 mm Hg); PaCO2, −0.94 mm Hg (95% CI, −3.76 to 1.86 mm Hg); PvO2, −0.60 mm Hg (95% CI, −6.90 to 5.70 mm Hg); PvCO2, −0.58 mm Hg (95% CI, −3.12 to 1.92 mm Hg) for the PTS specimen.

CONCLUSION: The difference in the PO2 and PaCO2 of paired (walked vs tubed) arterial and venous blood gas specimens demonstrated a slight bias. PaCO2 values demonstrated the greatest bias, however not clinically important. Thus, PTS transport does not impact clinical interpretations of blood gas values.

  • specimen transport
  • blood gas
  • cardiopulmonary

Footnotes

  • Correspondence: Louanne M Carabini MD, Northwestern Medicine, Department of Anesthesiology, Northwestern University Feinberg School of Medicine, Feinberg Pavilion, 251 E. Huron Suite 5-704, Chicago, IL 60611. E-mail: l-carabini{at}northwestern.edu.
  • The authors have disclosed no conflicts of interest.

  • Copyright © 2016 by Daedalus Enterprises
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Respiratory Care: 68 (10)
Respiratory Care
Vol. 68, Issue 10
1 Oct 2023
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The Clinical Significance of Patient Specimen Transport Modality: Pneumatic Tube System Impact on Blood Gas Analytes
Louanne M Carabini, Jacob Nouriel, Ricardo Diaz Milian, Erin R Glogovsky, Robert J McCarthy, Thomas G Handler, Michael L Ault
Respiratory Care Aug 2016, respcare.04765; DOI: 10.4187/respcare.04765

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The Clinical Significance of Patient Specimen Transport Modality: Pneumatic Tube System Impact on Blood Gas Analytes
Louanne M Carabini, Jacob Nouriel, Ricardo Diaz Milian, Erin R Glogovsky, Robert J McCarthy, Thomas G Handler, Michael L Ault
Respiratory Care Aug 2016, respcare.04765; DOI: 10.4187/respcare.04765
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  • specimen transport
  • blood gas
  • cardiopulmonary

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