Veterinary Radiography Ch 18

2.

The positive-contrast medium is completely insoluble in the gastrointestinal tract and is not absorbed by the abdomen or thorax if leakage occurs.

Iohexol
Propyliodone
Barium sulfate
Metrizamide

Correct Answer

A. Barium sulfate

Explanation

Barium sulfate is the correct answer because it is a positive-contrast medium that is insoluble in the gastrointestinal tract. This means that it will not dissolve or be absorbed by the body if there is any leakage. This property makes it a safe and effective option for imaging procedures such as X-rays or CT scans of the abdomen or thorax.

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3.

Which of the following statements is false?

All patients who will receive a gastrointestinal contrast study must receive an enema
General anesthesia and atropine are contraindicated for gastrointestinal contrast studies because of the degree to which they alter gastrointestinal motility
If an enema is administered, the contrast radiograph should not be taken until at least 1 hour postadministration

Correct Answer

A. All patients who will receive a gastrointestinal contrast study must receive an enema

Explanation

The statement "all patients who will receive a gastrointestinal contrast study must receive an enema" is false. Not all patients require an enema before a gastrointestinal contrast study. The decision to administer an enema depends on the specific case and the clinical judgment of the healthcare provider.

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4.

Which view is contraindicated duiring an esophagography and why?

Dorsoventral; contrast agent in the esophagus superimposed over the heart
Left lateral; potential for aspiration
Ventrodorsal; potential for aspiration
Right lateral; contrast agent in the esophagus superimposed over the heart

Correct Answer

A. Ventrodorsal; potential for aspiration

Explanation

NOTE: the potential for aspiration should always be considered in any view, especially if the animal is sedated.

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5.

Preparing a patient for an upper gastrointestinal study includes all of the following except:

An enema 4 hours before the procedure as needed
Fasting the patient for 12 - 24 hours
Sedation as needed
Administration of oral emetic such as hydrogen peroxide

Correct Answer

A. Administration of oral emetic such as hydrogen peroxide

Explanation

The correct answer is administration of oral emetic such as hydrogen peroxide. This is because an upper gastrointestinal study requires the patient to have an empty stomach, hence the fasting for 12-24 hours. Sedation may be needed to keep the patient calm during the procedure. An enema may be given to clear the lower gastrointestinal tract. However, administration of an oral emetic such as hydrogen peroxide is not necessary for this procedure.

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6.

What is the most diagnostic examinatino of the gastric mucosal lining?

Double-contrast gastrogram
Double-contrast upper gastrointestinal study
Positive-contrast gastrogram
Negative-contrast gastrogram

Correct Answer

A. Double-contrast gastrogram

Explanation

A double-contrast gastrogram is the most diagnostic examination of the gastric mucosal lining. This procedure involves the use of both positive and negative contrast agents to provide a detailed view of the stomach lining. The positive contrast agent highlights the surface of the stomach, while the negative contrast agent fills the spaces between the folds of the mucosa, allowing for better visualization of any abnormalities or lesions. This technique provides a comprehensive evaluation of the gastric mucosal lining and is often used to detect conditions such as ulcers, tumors, or inflammation.

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7.

Which of the following is a suitable agent to use as an enema before a lower gastrointestinal study?

Barium sulfate
Warm water
Soapy water
Mineral oil

Correct Answer

A. Warm water

Explanation

Warm water is a suitable agent to use as an enema before a lower gastrointestinal study because it helps to soften and lubricate the stool, making it easier to pass. It also helps to cleanse the colon and remove any residual fecal matter. Using warm water as an enema is a safe and gentle method that does not pose any risk of complications or side effects.

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8.

Which of the following are recommended for performing intravenous pyelography?

Placement of indwelling urinary catheter
Fast 12 - 24 hours before
Placement of abdominal pressure wrap during procedure
Obtain urinary samples immediately after procedure

Correct Answer

A. Fast 12 - 24 hours before

Explanation

Fasting 12-24 hours before intravenous pyelography is recommended because it helps to ensure that the patient's stomach is empty during the procedure. This is important because contrast dye is used during the procedure, and having food in the stomach can increase the risk of nausea, vomiting, and aspiration. Fasting also allows for better visualization of the urinary tract during the procedure.

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9.

Which of teh following is the safest combinatino of agents to sue for a cystogram?

Barium sulfate and carbon dioxide
Sodium iodide and nitrous oxide
Triiodinated ionic compounds and carbon dioxide
Triiodinated ionic compounds and room air

Correct Answer

A. Triiodinated ionic compounds and carbon dioxide

Explanation

Triiodinated ionic compounds and carbon dioxide are the safest combination of agents to use for a cystogram. This is because triiodinated ionic compounds are commonly used as contrast agents in medical imaging, and they are considered safe and effective for this procedure. Carbon dioxide is used as a gas to distend the bladder during a cystogram, and it is also considered safe. Therefore, using these two agents together would provide the safest option for performing a cystogram.

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10.

What additional view can be helpful for assessing a positive-contrast cystogram, especially in a male patient?

Lateral view with a horizontal beam
Lateral cubitus
Dorsoventral
Oblique

Correct Answer

A. Oblique

Explanation

An oblique view can be helpful for assessing a positive-contrast cystogram, especially in a male patient. This view allows for a better visualization of the bladder and its surrounding structures from a different angle, which can aid in the detection of any abnormalities or pathology.

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Veterinary Radiography Ch 18

What is the disadvantage of using low-osmolar contrast media?

Quiz Preview

The positive-contrast medium is completely insoluble in the gastrointestinal tract and is not absorbed by the abdomen or thorax if leakage occurs.

Which of the following statements is false?

Which view is contraindicated duiring an esophagography and why?

Preparing a patient for an upper gastrointestinal study includes all of the following except:

What is the most diagnostic examinatino of the gastric mucosal lining?

Which of the following is a suitable agent to use as an enema before a lower gastrointestinal study?

Which of the following are recommended for performing intravenous pyelography?

Which of teh following is the safest combinatino of agents to sue for a cystogram?

What additional view can be helpful for assessing a positive-contrast cystogram, especially in a male patient?