WVC parasite Q&A: Fecals and centrifugation

WVC parasite Q&A: Fecals and centrifugation

Holly Morss, CVT, answered these attendee questions during her Western Veterinary Conference presentation about ova identification.
source-image
Feb 22, 2011
By dvm360.com staff

Q. We're using sugar solution in a centrifuge with a positive meniscus and cover slip. The slide frequently flies off the swing arm, making a big mess. What can we do?

It's likely that your meniscus is too high, so there's too much surface tension pushing it up. Try positioning your cover slip slightly to the inside so there's a little room. This will let your swing arm move a bit so it doesn't fly off.

Q. Do you recommend using a centrifuge with a cover slip or a sterile fecal loop for egg recovery?

I prefer the cover slip. Letting it stand for five minutes offers more time for the eggs to collect and it's more consistent. The fecal loop allows for too much differentiation among people because the results depend on how far you dip it in, how long you leave it in, and so on.

Q. We recently saw coccidia on a fecal exam. Many were normal size, but some were larger. How do we tell which type of coccidia is present?

Noninfective coccidia feature a single-celled center. Infective coccidia feature a double-celled center. These infective organisms are sporulated and can be larger. Also, different species of coccidia can be larger. So I recommend just keeping the test general to coccidia.

Proceedings papers for techs

The very best behavior advice for new puppy owners (Proceedings)

CVC IN SAN DIEGO PROCEEDINGS

The entire hospital staff should play a role in the counseling of new puppy owners.

The technician's role creating a behavior centered veterinary practice (Proceedings)

CVC IN SAN DIEGO PROCEEDINGS

A focus on pet behavior in the veterinary clinic is an excellent practice builder.

Trying times--dealing with canine adolescent dog (Proceedings)

CVC IN SAN DIEGO PROCEEDINGS

A behavior wellness exam is an opportunity to check up on a pet’s behavioral health and answer any related questions a client may have.

Enriching geriatric patient's lives (Proceedings)

CVC IN SAN DIEGO PROCEEDINGS

An important time for practices to include a behavioral exam is when a pet becomes a senior.

Tubes and tracheas--all about endotracheal tubes and lesions in difficult intubations (Proceedings)

CVC IN SAN DIEGO PROCEEDINGS

Endotracheal tubes are usually made from silicone, polyvinyl chloride (PVC) plastic or red rubber.