Intestinal Worms (Online CE Course)

(based on 46 customer ratings)

Author: Margaret Reinhart MS, MT(ASCP)
Reviewer: Laurie Bjerklie, M.Ed., MT(ASCP)

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This parasitology course covers the common helminth (worm) parasites found in human feces. Discussed in the course is 1) how a patient gets infected by each of the intestinal parasites based on the worm's life cycle, 2) microscopic images of each parasite based on diagnostic criteria, and 3) clinical signs and symptoms caused by each helminth parasite. Appropriate specimens, as well as specimen collection, processing, and methods of microscopic examination are covered along with other diagnostic identification methods.

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Continuing Education Credits

P.A.C.E.® Contact Hours (acceptable for AMT, ASCP, and state recertification): 1.5 hour(s)
Approved through 9/30/2023
Florida Board of Clinical Laboratory Personnel Credit Hours - General (Microbiology/Mycology/Parasitology): 1.5 hour(s)
Approved through 9/1/2022

Objectives

  • Recall and briefly describe each of the common helminth (worm) parasites found in human feces.
  • Describe how a patient gets infected by each of the intestinal parasites based on the worm's life cycle.
  • Identify microscopic images of each parasite based on diagnostic criteria.
  • Describe clinical signs and symptoms caused by each helminth parasite.
  • Describe appropriate specimens, as well as specimen collection, processing, and methods of microscopic examination.
  • Describe other diagnostic methods besides microscopic examination.
  • Recognize those helminth species in which the human can host the larval phase in their tissues.

Customer Ratings

(based on 46 customer ratings)

Course Outline

Click on the links below to preview selected pages from this course.
  • Introduction to the Helminth (Worm) Parasites found in Human Feces.
  • The Trematodes (Flukes)
      • Classification of the Trematodes
      • Morphology of the Flukes
      • Life Cycles of the Flukes (Trematodes) Living in the Intestinal Tract
      • Life Cycles of the Flukes Living in the Biliary System and Lungs
      • Life Cycles of Schistosoma spp. Living in the Veins
      • Diagnosing the Trematodes
      • Diagnosing the Trematodes, continued
      • Comparison of the Trematode Egg Sizes
      • Clinical Symptoms and Treatments of the Flukes
      • Match the identification with the image of the egg.
      • The following are common among all flukes EXCEPT:
      • An O&P is ordered on a patient with abdominal discomfort and diarrhea, who had just come back from a trip to Asia. A microscopic exam is done on t...
  • The Cestodes (Tapeworms)
      • Classification of the Cestodes
      • Morphology of the Tapeworms
      • Life Cycles of the Tapeworms
      • Life Cycles of the Tapeworms, continued
      • Diagnosing the Tapeworms
      • Clinical Symptoms and Treatment of Tapeworms
      • Match the identification with the image of the egg.
      • An O&P is performed on a child who complains of a "tummy ache." The child has not traveled outside of the area. Several of these structures are se...
      • Match the name of the tapeworm with the name of its larval form.
  • The Nematodes (roundworms)
      • Classification of the Nematodes
      • Classification of the Nematodes, continued
      • Life Cycles of Nematodes
      • Life Cycles of Nematodes, continued
      • Diagnosing the Intestinal Nematodes
      • Clinical Symptoms and Treatment of Intestinal Nematodes
      • Many of the nematodes' life cyles require water for the development of their eggs or larvae.
      • A child is suspected of having a pinworm infection. What type of specimen should be ordered, and what would you look for?
      • Several eggs similar to the one in the image were seen on a formalin-ethyl acetate concentrate done on a child with abdominal pain. The child lives in...
  • Summary and More Hints on Diagnosing Intestinal Worms
      • Importance of Size
      • Importance of Proper Specimen Collection
      • Artifacts
      • All of the following are recommended fixatives for performing concentration techniques on stool specimens EXCEPT:
      • This structure is seen when examining a direct wet prep. It measures approx. 98 x 60 µm. How would you identify it?
  • 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: Margaret Reinhart MS, MT(ASCP), is a senior lecturer at the University of the Sciences where she has taught Human Parasitology since 1986. She was also director of the Medical Laboratory Science Program from 1990-2020. She also did research on various aspects of Parasitology.
Reviewer Information: Laurie Bjerklie, M.Ed., MT(ASCP), is currently a professor at Rasmussen College in Fargo, ND for their MLT program where she teaches a variety of courses including hematology and microbiology. She is the former Program Director of the Clinical Laboratory Science program at DeVry University in Phoenix, Arizona. Ms. Bjerklie has over ten years of experience in higher education and continues to work part time as a bench tech.
Course information: This course is intended as an overview/review of the common helminth parasites that can typically be diagnosed from a stool specimen.  The majority live in the intestines, although a few live in other organs, but their eggs can be found in the feces. The focus is on microscopic identification; some information on other diagnostic methods, life cycles, epidemiology, symptoms and treatment is also given.

How to Subscribe
MLS & MLT Comprehensive CE Package
Includes 147 CE courses, most popular
$95Add to cart
Pick Your Courses
Up to 8 CE hours
$50Add to cart
Individual course$20Add to cart
Need multiple seats for your university or lab? Get a quote
The Diphyllobothrium spp. life cycle (22).


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The Ascariasis life cycle (32).


A lumbricoides adult


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The <i>Paragonimus westermani</i> life cycle (6).


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