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Ch 16 Urinary Contra
Bontrager Ch 16 Urinary Contrast Media
Question | Answer |
---|---|
Which type of contrast media will not significantly increase the osmolarity of the blood? | Non Ionic contrast media |
Which type of contrast media uses a parent compound of a benzoic acid? | Ionic contrast media |
Which type of contrast media incorporates sodium, or meglumine to increase solubility of the contrast media? | Ionic contrast media |
Which type of contrast media creates a hypertonic solution in the blood plasma? | Ionic contrast media |
Which type of contrast media is a near isotonic solution? | Non Ionic contrast media |
Which type of contrast media poses a greater risk for disrupting homeostasis? | Ionic contrast media |
What is the common anion & cation in the ionic contrast media? | The common cation is Sodium (+) or Meglumine & the common anion's (-) are Diatrizoate & Iothalamate. |
What is the basis for any disruption in the physiological functions of the body that may lead to a contrast media reaction? | The Chemo-Toxic Theory. An increase in osmolarity may lead to a reaction. The body wants to remain in homeostasis. |
Which type of contrast media dissociates the (+) cation and (-) anion? Which one doesn't? Why is this? | Ionic contrast disocciates the (+) anion & (-) cation creating an increase in osmolarity. NonIonic contrast does not dissociate. Becasue NonIonic contrast does not have the Benzoic Acid ring with the cation (+) so no dissociation & no increase osmolarity. |
Which types of things would be a possible increased chance for a reaction to contrast? | People who've had a previous reaction. People with Asthma. People with kidney/heart/liver disease. People with known blood disorders. |
What are normal creatinine level range for an adult? | 0.6 to 1.5 mg/dl |
What are the normal BUN levels for an adult? | 8 to 25 mg/100 ml |
Metformin Hydrochloride is a drug that's taken for the management of what? How many hours should Metformin Hydrochloride be withheld for following a contrast media procedure? When should it be resumed? | Diabetes Mellitus. For 48 hours. It should only be resumed if kidney function is again to be determined within normal limits. |
What are the 4 general categories of contrast media REACTIONS? | Mild, Moderate, Sever, Organ Specific. |
Which type of reaction is a true allergic response to iodinated contrast media? | Anaphylactic reaction |
Which type of reaction is due to stimulation of the vagus nerve by introduction of contrast media, which causes heart rate & blood pressure to fall? Is this reaction considered to be life threatening? | Vasovagal reaction. Yes, vasovagal reactions are considered to be life threatening. |
How many hours following an iodinated contrast media procedure may acute renal failure occur? | 48 hours |
What is the term for leakage of contrast media from a vessel into the surrounding soft tissue called? | Extravasation |
What type of reaction would temporary renal failure be considered? | Organ specific |
What is an expected outcome of the introduction of contrast media is described as what? | A side effect. |
What is the primary purpose of the pre-medication procedure before an iodinated contrast procedure? Which drugs are often given to the patient as part of the pre-medication procedure? | To prevent the severity of a sever reaction. Benadryl & Prednisone. |
In addition to notifying a nurse or physician when contrast media has extravasated into soft tissue, what should the technologist first do to increase reabsorption? | Elevate the affected extremity preferably above the heart. |
When does tissue inflammation peak following an extravasated contrast media? | 24 to 48 hours following extravasation. |
How many times should the drug label and expiration date be read? When should this be done? | It should be read 3x. When the drug is removed from the shelf, when the drug is removed from the container, finally when the drug is administered. |