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Related Concept Videos

Pulmonary Function Tests01:25

Pulmonary Function Tests

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Pulmonary Function Tests (PFTs)
Pulmonary Function Tests are crucial diagnostic tools for assessing respiratory function, particularly in patients with chronic respiratory disorders. They comprehensively evaluate lung volumes, ventilatory function, breathing mechanics, diffusion, and gas exchange. These tests help diagnose pulmonary diseases and play a significant role in monitoring disease progression, evaluating disability, and assessing response to therapy.
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Serum Studies: Renal Function Tests01:24

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Renal function tests are crucial for assessing kidney health, monitoring disease progression, and evaluating the kidneys' efficiency in waste elimination, fluid balance, and electrolyte regulation. These tests offer critical insights into kidney function, even though routine measurements may appear normal until there is a significant decline in the glomerular filtration rate or GFR. Typically, signs of kidney impairment only become evident when the GFR falls to about 50% of its normal level.
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A complementation test is a simple cross to identify whether the two mutations are located on the same gene or different genes. It was first performed by Edward Lewis in the 1940s while working on fruit flies. He developed the test to identify the location and arrangement of different mutations on chromosomes.
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Significance testing is a set of statistical methods used to test whether a claim about a parameter is valid. In analytical chemistry, significance testing is used primarily to determine whether the difference between two values comes from determinate or random errors. The effect of a particular change in the measurement protocol, analyst, or sample itself can cause a deviation from the expected result. In the case of a suspected deviation/outlier, we need to be able to confirm mathematically...
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Routine use of post-bronchodilator testing in pulmonary function testing labs.

Joel Agarwal1, Emad Saad, Geoffrey Fontaine

  • 1Department of Medicine, University of Alberta; Department of Biological Sciences, University of Alberta. email@email.com.

Clinical and Investigative Medicine. Medecine Clinique Et Experimentale
|February 10, 2019
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Summary

Pulmonary function test (PFT) labs in Alberta lack standardized policies for post-bronchodilator (post-BD) testing, leading to inconsistent asthma diagnosis and potential healthcare waste. Developing a uniform approach is recommended for improved efficiency and patient care.

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Area of Science:

  • Respiratory Medicine
  • Health Policy
  • Quality Assurance

Background:

  • Pulmonary function tests (PFTs), including spirometry, are crucial for diagnosing asthma and other obstructive airway disorders.
  • Studies indicate that up to one-third of asthma diagnoses may be inaccurate.
  • The use of post-bronchodilator (post-BD) testing in PFTs requires clear policy guidelines to prevent unnecessary utilization.

Purpose of the Study:

  • To assess the existence and nature of post-bronchodilator (post-BD) testing policies in Pulmonary Function Test (PFT) laboratories across Alberta.
  • To evaluate the consistency and appropriateness of post-BD testing protocols in the diagnosis of asthma and related conditions.
  • To identify potential inefficiencies and healthcare system costs associated with non-standardized post-BD testing practices.

Main Methods:

  • A health policy study was conducted, reviewing all PFT labs in Alberta (hospital-based not-for-profit and private for-profit).
  • Policies regarding spirometry and asthma diagnosis, specifically concerning post-BD testing, were collected from May 1 to August 31, 2017.
  • Data on lab type, policies, and participation were analyzed in collaboration with provincial medical associations.

Main Results:

  • Out of 92 identified PFT labs, only 18 hospital-based labs responded fully; 10 had no post-BD policy, and six had a policy or algorithm.
  • Among 74 private for-profit labs, only three reported having relevant policies, with 61 labs not providing information.
  • Policies for post-BD testing were found to be highly heterogeneous across Alberta, with limited access in Northern regions.

Conclusions:

  • Significant heterogeneity exists in Pulmonary Function Test (PFT) lab policies regarding post-bronchodilator (post-BD) testing in Alberta.
  • Low response rates from private for-profit labs highlight challenges in policy assessment and standardization.
  • A standardized provincial policy for post-BD testing is recommended to improve diagnostic accuracy and healthcare efficiency, with further review of its appropriateness needed.