Urinalysis and Body Fluids 6th Edition by Majorie DiLorenzo, Susan Strasinger

Exercise 40

When performing a microscopic stool examination for muscle fibers, the structures that should be counted:

A. Are coiled and stain blue

B. Contain no visible striations

C. Have two-dimensional striations

D. Have vertical striations and stain red

Step 1 of 2

The microscopic examination for muscle fiber:

The following procedure is used to examine the muscle fiber using microscopic examination:

• Before performing examination, patients are advised to add red meat along with their diet and within a day, the specimen would be examined

• The slide is prepared by emulsifying the little amount of feces with the 10% of alcoholic eosin to enhance the striation of muscle fiber

• The slide is examined for 5 minutes and the red-stained fiber with striation are counted

o Undigested fiber have 2D (two dimensional) striation that is, it has both horizontal and vertical striation

o Partially digested fiber have 1D (one dimensional) striation that is, it has either horizontal or vertical striation

o Digested fiber does not have visible striations that is, it has neither horizontal nor vertical striation

• Only the undigested fibers are counted

Therefore, when performing microscopic examination for the muscle fiber, the structures should be counted that “have two dimensional striations”. Hence, the correct answer is option.