Respiratory Case Study: Possible Pertussis Infection (Online CE Course)

(based on 245 customer ratings)

Author: Leah Ames, MS, MLS(ASCP)^CM
Reviewer: Adelisa Franchitti, MS, MLS

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Continuing Education Credits

P.A.C.E.® Contact Hours (acceptable for AMT, ASCP, and state recertification): 1 hour(s)

Course number 578-084-18, approved through 11/1/2020

Florida Board of Clinical Laboratory Personnel Credit Hours - General (Molecular Pathology): 1 hour(s)

Course number 20-636349, approved through 9/1/2020

Objectives

Identify the clinical symptoms of Bordetella pertussis infection.
Describe proper specimen collection and transport for diagnosis of B. pertussis.
Identify laboratory testing procedures that aid in the diagnosis of B. pertussis.
Discuss advantages and disadvantages for each testing procedure including culture, nucleic acid amplification testing (NAAT), direct fluorescent antibody staining, and serology.
Explain the principles of NAAT testing for B. pertussis.
Discuss treatment options for pertussis infection.
Identify available vaccines that can help to prevent infection with B. pertussis.

Customer Ratings

(based on 245 customer ratings)

Course Outline

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Case Presentation

Case Study
Pathogenesis and Virulence Factors
Epidemiology and Transmission
Clinical Course and Significance of the Disease
Summary Table: Stages and Clinical Features of Pertussis
Complications
Case Study, continuedThe clinician calls the laboratory to obtain instructions for collection of the specimen. Which of these specimens and collection...
Proper Specimen Collection and Transport

Laboratory Workup

Case Study, continued: Laboratory Testing
Case study, continued Upon arrival in the laboratory, one of the swabs is used for culture. Which one of these selective media is an appropriate choic...
Case Study, continuedAfter four days of incubation at 37°C, small, shiny colonies are observed on the Regan-Lowe agar. A Gram stain of the cultur...
Identification by Culture Methods
Nucleic Acid Amplification Testing (NAAT)
Genomic Insertion Sequences
Single-Copy Gene Targets
Positive Predictive Value
Addressing False-Positive NAAT Results
True or false: Insertion sequences can move around and insert into different locations on the genome, changing the overall genetic sequence of the bac...
Direct Fluorescent-Antibody Staining (DFA)
White Blood Cell (WBC) Count
Case Study, continued: IgA, IgM and IgG Antibody Testing
Advantages and Disadvantages of Laboratory Tests for Identification of B. pertussis
Clinical Stages of Pertussis and Optimal Timing for Diagnostic Testing
Which of these tests may be performed late in the course of B. pertussis infection?
How does the prevalence of a particular pathogen in a given area correlate to positive predictive values?

Case study conclusion

Case Study Conclusion
Treatment and Dosing for Pertussis
Prevention
Which of the following antibiotics is recommended for infants less than one month old for treatment of Bordetella pertussis infection?

References

References

Additional Information

Level of instruction: Intermediate

Intended Audience: Medical laboratory scientists, medical technologists, and technicians. This course is also appropriate for medical laboratory science students and pathology residents.

Author information: Leah Ames, MS, MLS(ASCP)^CM is a medical technologist in the Molecular Diagnostics department at Alverno Clinical Laboratories. She also serves as adjunct faculty for molecular diagnostics in the CLS program at Northern Illinois University and is an instructor of molecular diagnostics for Franciscan St. Margaret Health School of Medical Technology. Leah holds an M.S. degree in Clinical Laboratory Science from Michigan State University and a B.S. in Molecular and Integrative Physiology from the University of Illinois.

Reviewer information: Adelisa Franchitti, MS, MLS is currently employed by General Leonard Wood Army Community Hospital Laboratory. Previous to this employment, she was an Instructor in the Department of Biochemistry, Kansas State University. Ms. Franchitti holds a Masters in Microbiology and a Masters in Molecular Biology.

B.pertusis gram stain.
Image courtesy of www.phil.cdc.gov

Pertussis Disease Progression.
Image courtesy of www.cdc.gov

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