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Related Concept Videos

Urine Studies I: Urinalysis01:29

Urine Studies I: Urinalysis

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Urinalysis is a widely used diagnostic test that analyzes urine's physical, chemical, and microscopic characteristics. Healthcare providers use it to detect and monitor various health conditions, including renal disease, urinary tract infections (UTIs), diabetes, and metabolic or systemic disorders.Components of UrinalysisUrinalysis consists of three primary components: physical, chemical, and microscopic examination. Each provides unique insights into the urine sample and, by extension, the...
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Urine Studies II: Urine Culture and Sensitivity Test01:26

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A urine culture and sensitivity test is a diagnostic procedure used to identify urinary tract bacterial infections and determine the most effective antibiotics for treatment. This test is generally preferred when a patient shows manifestations of a urinary tract infection, such as frequent or painful urination, cloudy or foul-smelling urine, or lower abdominal pain.Purpose of the TestThe primary goals of a urine culture and sensitivity test are to:Determine the specific bacteria causing the...
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Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care01:30

Urinary Tract Infection III: Diagnostic Studies and Interprofessional Care

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A healthcare provider can diagnose a urinary tract infection (UTI) through several methods:Medical History and Symptoms: The provider will take a detailed medical history and ask about symptoms such as frequent urination, burning sensation during urination, and lower abdominal pain.Urinalysis: A clean-catch urine sample is collected in a sterile container and tested for the presence of bacteria, white blood cells (leukocytes), nitrites, blood, and protein. The presence of leukocytes and...
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Therapeutic Drug Monitoring: Drug Analysis Methods01:26

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Therapeutic Drug Monitoring (TDM) is a clinical practice that measures specific drug levels in a patient's blood or body tissues to tailor drug therapy effectively. This monitoring is critical for managing drugs with narrow therapeutic indices like digoxin and phenytoin, ensuring they are both safe and effective. For instance, monitoring theophylline levels in asthma patients involves precision and sensitivity to adjust doses according to individual responses to therapy, ensuring efficacy and...
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Laboratory-Generated Urine Toxicology Interpretations: A Mixed Methods Study.

Isaac S Chua1, Jaime R Ransohoff1, Olga Ehrlich2

  • 1Division of General Internal Medicine and Primary Care, Department of Medicine, Brigham and Women's Hospital, Boston, MA, USA; Department of Psychosocial Oncology and Palliative Care, Dana-Farber Cancer Institute, Boston, MA, USA; Harvard Medical School, Boston, MA, USA.

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Summary
This summary is machine-generated.

A new laboratory service for interpreting urine drug tests (UDT) for patients on chronic opioid therapy (COT) was well-received by clinicians. However, it did not significantly improve test interpretation accuracy or change prescribing behaviors.

Keywords:
chronic painclinical decision supportdiagnostic errorliquid chromatography-tandem mass spectrometryopioidpalliative careprimary caresubstance use disorderurine drug testingCompliance monitoring

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Area of Science:

  • Clinical Chemistry
  • Pharmacology
  • Health Services Research

Background:

  • Clinicians often struggle to accurately interpret urine drug testing (UDT) results for patients on chronic opioid therapy (COT).
  • Accurate interpretation of UDT is crucial for patient management and safety in COT.

Purpose of the Study:

  • To assess the implementation and effectiveness of a novel laboratory-generated interpretation service for UDT in clinicians prescribing COT.
  • To evaluate the impact of this service on clinical decision-making, workflow, and patient outcomes.

Main Methods:

  • A mixed-methods design combining implementation (focus groups, surveys) and effectiveness (pre-post cohort study with matched controls) was employed.
  • The intervention involved providing clinicians with laboratory-generated interpretive reports of UDT results.
  • Effectiveness outcomes included interpretation concordance, documentation frequency, and changes in prescribing behavior.

Main Results:

  • Clinicians found the interpretation service easy to use, improving comprehension, accuracy, speed, and confidence in interpreting UDT results.
  • While clinician-laboratory interpretation concordance showed a positive trend, it did not reach statistical significance.
  • No significant differences were observed in interpretation documentation frequency or opioid-prescribing behavior between intervention and control groups.

Conclusions:

  • The laboratory-generated UDT interpretation service was positively received by clinicians for its usability and perceived benefits.
  • Despite positive feedback, the service did not lead to statistically significant improvements in laboratory-clinician interpretation concordance, documentation, or prescribing practices.
  • Further research with larger sample sizes and diverse settings may be needed to confirm generalizability and impact.