Mosbys CT Registry Review 3rd Edition:

Mosby's CT Registry Review 3rd Edition:

Practice Exam #1 Questions with Complete Solutions An average range for activated partial thromboplastin time

(PTT) is: - Correct Answers ✅25-35 seconds.

PTT is a lab measure of blood coagulation.What is the correct angle of insertion for placing a butterfly needle into a vein for intravenous administration of a contrast agent? - Correct Answers ✅15 degrees It's also important that the vein be properly stabilized and needle be inserted gently with bevel facing upward.A total volume of 125 mL of an iodinated contrast agent is administered intravenously via automatic injector in 50

seconds. The flow rate for this injection is: - Correct

Answers ✅2.5 mL/sec Flow rate may be calculated by dividing total contrast volume by time of injection.The condition whereby the pt suffers from a low

concentration of oxygen in the blood is called: - Correct

Answers ✅hypoxemia 1 / 4

Mosby's CT Registry Review 3rd Edition:

Practice Exam #1 Questions with Complete Solutions While one is obtaining a thorough history from a pt before the intravenous injection of an iodinated contrast material, which of the following topics should be included?

• any prior allergic reactions to CM
• presence of HIV or hepatitis infection
• hx of asthma - Correct Answers ✅1 and 3 only.

Which of the following factors may affect a pt's calculated GFR?

• age
• sex
• race - Correct Answers ✅1, 2, and 3

Which of the following IV contrast agent administration methods provides the greatest overall plasma iodine concentration?

• drip infusion
• bolus technique
• biphasic technique
• CT portography - Correct Answers ✅bolus technique

A bolus admin. of contrast agent requires entire vol of material to be injected over the shortest possible time. Bolus 2 / 4

Mosby's CT Registry Review 3rd Edition:

Practice Exam #1 Questions with Complete Solutions admin provides the maximum plasma iodine concentration and subsequent tissue enhancement.A patient in shock may exhibit which of the following sx?

• tachycardia
• rapid, shallow breathing
• cyanosis - Correct Answers ✅1, 2, and 3

Other sx include pallor, hypotension, and cold, clammy skin The drug SOLU-CORTEF may be classified as which of the following?

• anticholinergic
• bronchodilator
• antihistamine
• corticosteroid - Correct Answers ✅corticosteroid

SOLU-CORTEF is a brand name for hydrocortisone.Corticosteroids may be used during tx of anaphylactoid reactions to iodinated CM.Which of the following is a nonionic contrast material?

• iodamide 3 / 4

Mosby's CT Registry Review 3rd Edition:

Practice Exam #1 Questions with Complete Solutions

• iothalamate
• iohexol
• diatrizoate - Correct Answers ✅iohexol

Nonionic CM include iopamidol (Isovue), iohexol (Omnipaque), and iopromide (Ultravist).What term is used to describe a pt who is having difficulty breathing? - Correct Answers ✅dyspnea What term describes the situation in which an assumption is made that an unconscious or otherwise physically unable pt consents to medical treatment? - Correct Answers ✅implied consent Complete cardiac diastole corresponds to which portion of the cardiac cycle on an electrocardiogram (ECG)? - Correct Answers ✅T wave During CT arthrography, iodinated contrast media is injected

directly into the: - Correct Answers ✅joint space

Which of the following is considered one of the iso-osmolar contrast media (IOCM)?

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