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Related Concept Videos

Reflex Activity01:08

Reflex Activity

A reflex activity is an automatic, involuntary response to specific stimuli. It is a part of our survival mechanism, designed to protect us from potential harm. For example, when a bright light suddenly shines into our eyes, we instinctively close them or look away. This is a simple reflex activity orchestrated by the nervous system without conscious thought or effort.
A reflex exam is a diagnostic procedure performed by a healthcare professional to evaluate the functionality of a patient's...

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Related Experiment Video

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Objective Nociceptive Assessment in Ventilated ICU Patients: A Feasibility Study Using Pupillometry and the Nociceptive Flexion Reflex
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Reflex testing to define action limits for community-based requests.

Jeffrey Barron1, Charles Ng, Lisa Aspin

  • 1Biochemistry Department, Labtests, PO Box 12049, Penrose, Auckland 1642, New Zealand. jeffrey.barron@labtests.co.nz

Annals of Clinical Biochemistry
|June 13, 2012
PubMed
Summary
This summary is machine-generated.

Algorithms for reflex testing efficiently identified critical lab values, distinguishing them from non-emergency results. This improved communication by only notifying clinicians of urgent findings, saving staff time.

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Area of Science:

  • Clinical Chemistry
  • Laboratory Medicine
  • Diagnostic Algorithms

Background:

  • Critical laboratory values require immediate 24/7 notification.
  • Non-critical abnormal results may only need daytime contact.
  • Clinicians prefer contact only for critical results to optimize staff resources.

Purpose of the Study:

  • To develop algorithms for reflex testing to differentiate critical from non-emergency abnormal laboratory results.
  • To optimize the notification system for laboratory results based on urgency.

Main Methods:

  • Devised algorithms for reflex addition of tests to analyze results.
  • Algorithms differentiated significantly abnormal results into critical or day-phoning categories.
  • Evaluated algorithm performance across various analytes including glucose, lithium, digoxin, magnesium, and creatine kinase.

Main Results:

  • Algorithms identified 51% of tested results as critical over nine months.
  • Specific reflex tests successfully identified critical values for serum glucose, lithium, and digoxin.
  • Reflex testing for hypocalcaemia was highly effective, identifying all cases.
  • Reflex markers for rhabdomyolysis-induced acute renal failure were not effective for differentiating high creatine kinase levels.

Conclusions:

  • Reflex testing algorithms enabled a tiered phoning system for laboratory results.
  • This system effectively separates critical from non-emergency abnormal values.
  • The approach conserves staff time and avoids unnecessary notifications to clinicians.