ISSN 2398-2977      

Lung: pulmonary function test

pequis

Introduction

  • Tests to assist in the evaluation of the effectivity of respiratory function using quantitative measurements.
  • Includes arterial blood gas analysis Blood: gas analysis, intrapleural (intrathoracic) pressure measurement and exercise tolerance testing Musculoskeletal: exercise response test.

Uses

  • Arterial blood gas analysis Blood: gas analysis: arterial [CO2] assesses alveolar ventilation; arterial [CO2] and [O2] and pH assess pulmonary gas exchange.
  • Exercise tolerance tests Musculoskeletal: exercise response test identify performance limiting pulmonary disease.
  • Oxygen consumption and arterial blood gas analysis can be measured during tolerance testing on a treadmill.

Advantages

  • Analysis of pulmonary function during speed may reveal pathology that is not presented at rest.

Disadvantages

  • Blood gas analysis requires expensive equipment (but less expensive equipment is becoming available) and rapid (<4 h on ice) analysis.
  • Anxiety may affect results.
  • Intrapleural pressure measurement can quantify dyspnea, but only at rest.
  • Exercise tolerance testing requires a treadmill and is only performed at research or referral centers.

Requirements

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Preparation

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Procedure

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Aftercare

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Outcomes

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Prognosis

  • Good.

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Dixon P M, Railton D I and McGorum B C (1995) Equine pulmonary diseases - a case control study of 300 referred cases. Part 3. Ancillary diagnostic tests. Equine Vet J 27 (6), 428-435 PubMed.

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