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CT

Patient care and safety

QuestionAnswer
When evaluating a patient's labs, elevated creatinine is indication of what medical condition? Impaired renal function
When performing an invasive CT exam such as an RFA of the liver, a partial thromboplastin time ( PTT) is drawn. What does the test measure? time for normal clot formation in plasma.
what type of consent is obtained prior to a noninvasive CT procedure? simple expressed
which of the following methods must be utilized when placing an IV line in an antecubital vein? The tech must wash their hands prior to starting the IV line
when administering IV contrast to a patient with a mastectomy, which vein should be chosen? the vein on the contralateral side
what instrument is used to measure radiation exposure? Ionization chamber
what method is used to lower the viscosity of contrast media before injecting? heating the media to body temperature
for radiation workers in the USA what is their dose limits per year? 50 mSv
A female pt. arrives in the ER with severe right flank pain. The pt. is 5.4' weighing 100lbs. What technical factors would change to reduce her radiation dose? mAs, since it's more proportional to dose.
Which of the following is not part of the patient identification process? Obtaining informed consent
what is the premedication strategy for a patient with a prior allergic reaction to iodinated contrast media before a contrast-enhanced CT? premedication w/ steroids and antihistamines.( prednisode-50mg 13hrs prior, 7hrs, & 1hr before CM. plus diphenhydramine 50 mg IV 1hr before cm.
When a technologist examines a patient prior to placing an IV catheter for a contrast-enhanced CT study, which of the following veins would you use? Medial cubital vein.
Dose descriptors are used to identify approximate patient doses, which of the following is the dose description utilized for modern multi-slice CT scanners? CTDI volume
What type of needle is equipped with plastic projections on either side that aid in holding the needle during venipuncture a butterfly needle
What is the normal range of respiration for an adult? 12-20 BPM
What term refers to the number of ions formed when a substance dissociates in a solution? Osmolality
Which of the following is considered a severe reaction to an iodinated contrast reaction? Cardiopulmonary arrest
The dose to the central slice plus the dose from the scatter into nearby slices equals which of the following dose descriptions? MSAD
What is the dose descriptor that can be calculated if the length of the irradiated volume ( scan length) and the CTDI and known? DLP
of the following terms, which is a parenteral rout of administering medication? Intramuscular
What is the measure of the total number of particles in contrast media per kilogram of water? osmolality
Which of the following is a characterizing of ionic CM high osmolality
What test is used to evaluate renal function GFR
The mAs for a particular procedure remains constant and the pitch changes from 2 to 1 ; what change does it have on the dose? Increased dose
which of the following is deemed a moderate reaction to CM Dyspnea:
Which of the following is a property of nonionic CM Iodine concentration is maintained w/o increasing the number of particles in solution; therefore, it does no increase the osmolality of the blood serum and does not change the osmolality pressure in the blood stream .
What is the relationship between the does and the number of detectors ? As number of detectors rows increases dose decreases
Which of the following is a characteristic of a low-osmolality CM less toxic.
What is the principle behind the benefit of lower kV in some clinical applications? a superior enhancement of iodine
What radiation dose saving technique adjusts the tube current based on the patient's overall attenuation by modulation the tube current in the angular ( x-Y) and longitudinal ( z) dimensions to adapt to the pt. shape? Angular-longitudinal tube current modulation
What is the quantifying risk from partial-body exposure to that from the equivalent whole-body dose? effective dose
Which of the following is a sign on an anaphylactic reaction? Bronchospasm with significant hypoxia
which of the following statements are characteristics of power injectors? 1. the maximum volume of each syringe is 200cc 2. they have internal heating mechanisms to maintain the temp of the CM
which of the following statement's are part of the patient interactions process? 1. establish truest 2. have the pt. explain the exam back 3. calm the degree of anxiety of the pt.
which of the following are contraindications for the administrations fo IV CM 1. asthma 2. atopic syndrome 3. cardiac dysfunction
Created by: eanaya1280
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