CT Test 1 (Mosby 3rd Edition) || with Precise Solutions.
C. 25 - 35 seconds
Partial thromboplastin time (PTT) is a laboratory measure of blood coagulation.
This value is used to screen patients for invasive procedures.
Because of individual laboratory practices, the average range may fluctuate slightly. correct
answers An average range for activated partial thromboplastin time (PTT) is:
a. 10 - 12 seconds
b. 17 - 21 seconds
c. 25 - 35 seconds
d. 43 - 55 seconds
B. 15 degrees correct answers Which of the following is the correct angle of insertion for placing
a butterfly needle into a vein for intravenous administration of a contrast agent?
a. 5 degrees
b. 15 degrees
c. 45 degrees
d. 60 degrees
D. 2.5 mL/sec
Flow rate calculated by dividing the total contrast volume by the time of the injection.
125mL/50 sec = 2.5mL/sec correct answers 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:
a. 0.75 mL/sec
b. 1.25 mL/sec
c. 1.75 mL/sec
d. 2.5 mL/sec
A. Hypoxemia
Hypoxemia: low concentration of oxygen in blood
Hypotension: low blood pressure
hypoxia: low oxygen in tissue
hyponatremia: low sodium in blood correct answers The condition whereby the patient suffers
from a low concentration of oxygen is called:
a. hypoxemia
b. hypotension
c. hypoxia
d. hyponatremia
,C. 1 and 3 only -- Any prior allergic reaction to contrast media and history of asthma
These factors increase the incidence of adverse reactions to iodinated contrast media.
It is therefore vital to question the patient regarding these factors before contrast agent
administration.
The presence of the human immunodeficiency virus (HIV) or hepatitis does not increase the
incidence of adverse reactions to iodinated contrast media.
Because universal precautions govern the protection of all patients and health care professionals,
there is no need to question the patient regarding these factors. correct answers While one is
obtaining a thorough history from a patient before the IV injection of an iodinated contrast
material, which of the following topics should be included?
1. any prior allergic reactions to contrast media
2. presence of HIV or hepatitis infection
3. history of asthma
a. 1 only
b. 1 and 2 only
c. 1 and 3 only
d. 1, 2 and 3
D. 1, 2 and 3 -- Age, sex and race
GFR is calculated using the patient's measured serum creatinine level and takes into account the
patient's age, sex and race. correct answers Which of the following factors may affect a patient's
calculated glomerular filtration rate (GFR)?
1. age
2. sex
3. race
a. 1 and 2 only
b. 2 and 3 only
c. 1 and 3 only
d. 1, 2 and 3
B. Bolus technique
Bolus administration of contrast agent requires the entire volume of material be injected over the
shortest possible time. correct answers Which of the following IV contrast agent administration
methods provide the greatest overall plasma iodine concentration?
a. drip infusion
b. bolus technique
c. biphasic technique
d. CT portography
,D. 1, 2 and 3 -- tachycardia, rapid and shallow breathing, and cyanosis
General signs and symptoms that a patient is going into shock include rapid breathing,
tachycardia, hypotension, weak pulse, pallor, cyanosis, and cold, clammy skin. correct answers
A patient in shock may exhibit which of the following symptoms?
1. tachycardia
2. rapid, shallow breathing
3. cyanosis
a. 1 only
b. 1 and 2 only
c. 1 and 3 only
d. 1, 2, and 3
D. Corticosteroid
SOLU-CORTEF is a brand name for hydrocortisone, which is a type of corticosteroid.
Corticosteroids may be used during the treatment of anaphylactoid reactions to iodinated contrast
materials. correct answers The drug SOLU-CORTEF may be classified as which of the
following?
a. anticholinergic
b. bronchodilator
c. antihistamine
d. corticosteroid
C. Iohexol
Nonionic contrast include iopamidol (Isovue), iohexol (Omnipaque) and iopromide (Ultravist).
correct answers Which of the following is a nonionic contrast material?
a. iodamide
b. iothalamate
c. iohexol
d. diatrizoate
B. Dyspnea
Dysphagia: difficulty swallowing
Dysphasia: language disorder marked by deficiency in the generation of speech, and sometimes
also in its comprehension, due to brain disease or damage. correct answers Which of the
following terms is used to describe a patient who is having difficulty breathing?
a. dyslexia
b. dyspnea
c. dysphagia
d. dysphasia
, D. Implied consent
Occurs when a patient is in need of immediate medical services but is unconscious or physically
unable to consent to treatment.
The assumption is made that the patient would consent if able. correct answers Which of the
following describes the situation in which an assumption is made that an unconscious or
otherwise physically unable patient consents to medical treatment?
a. informed consent
b. witnessed consent
c. patient proxy
d. implied consent
D. T wave
Complete cardiac diastole is the period of atrial and ventricular relaxation after heart contraction.
The T wave of an electrocardiogram (ECG) corresponds to cardiac diastole. correct answers
Complete cardiac diastole corresponds to which portion of the cardiac cycle on an
electrocardiogram (ECG)?
a. P wave
b. QRS complex
c. alpha wave
d. T wave
A. Joint space correct answers During CT arthrography, iodinated contrast media is injected
directly into the:
a. joint space
b. intrathecal space
c. subarachnoid space
d. venous bloodstream
A. Iodixanol
Iodixanol (Visipaque) is an example of a nonionic iso-osmolar contrast agent.
Iohexol (Omnipaque), iopamidol (Isovue), and ioversol (Optiray) are all nonionic low-osmolar
contrast media (LOCM). correct answers Which of the following is considered one of the iso-
osmolar contrast media (IOCM)?
a. iodixanol
b. iopamidol
c. iohexol
d. ioversol
C. 25 - 35 seconds
Partial thromboplastin time (PTT) is a laboratory measure of blood coagulation.
This value is used to screen patients for invasive procedures.
Because of individual laboratory practices, the average range may fluctuate slightly. correct
answers An average range for activated partial thromboplastin time (PTT) is:
a. 10 - 12 seconds
b. 17 - 21 seconds
c. 25 - 35 seconds
d. 43 - 55 seconds
B. 15 degrees correct answers Which of the following is the correct angle of insertion for placing
a butterfly needle into a vein for intravenous administration of a contrast agent?
a. 5 degrees
b. 15 degrees
c. 45 degrees
d. 60 degrees
D. 2.5 mL/sec
Flow rate calculated by dividing the total contrast volume by the time of the injection.
125mL/50 sec = 2.5mL/sec correct answers 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:
a. 0.75 mL/sec
b. 1.25 mL/sec
c. 1.75 mL/sec
d. 2.5 mL/sec
A. Hypoxemia
Hypoxemia: low concentration of oxygen in blood
Hypotension: low blood pressure
hypoxia: low oxygen in tissue
hyponatremia: low sodium in blood correct answers The condition whereby the patient suffers
from a low concentration of oxygen is called:
a. hypoxemia
b. hypotension
c. hypoxia
d. hyponatremia
,C. 1 and 3 only -- Any prior allergic reaction to contrast media and history of asthma
These factors increase the incidence of adverse reactions to iodinated contrast media.
It is therefore vital to question the patient regarding these factors before contrast agent
administration.
The presence of the human immunodeficiency virus (HIV) or hepatitis does not increase the
incidence of adverse reactions to iodinated contrast media.
Because universal precautions govern the protection of all patients and health care professionals,
there is no need to question the patient regarding these factors. correct answers While one is
obtaining a thorough history from a patient before the IV injection of an iodinated contrast
material, which of the following topics should be included?
1. any prior allergic reactions to contrast media
2. presence of HIV or hepatitis infection
3. history of asthma
a. 1 only
b. 1 and 2 only
c. 1 and 3 only
d. 1, 2 and 3
D. 1, 2 and 3 -- Age, sex and race
GFR is calculated using the patient's measured serum creatinine level and takes into account the
patient's age, sex and race. correct answers Which of the following factors may affect a patient's
calculated glomerular filtration rate (GFR)?
1. age
2. sex
3. race
a. 1 and 2 only
b. 2 and 3 only
c. 1 and 3 only
d. 1, 2 and 3
B. Bolus technique
Bolus administration of contrast agent requires the entire volume of material be injected over the
shortest possible time. correct answers Which of the following IV contrast agent administration
methods provide the greatest overall plasma iodine concentration?
a. drip infusion
b. bolus technique
c. biphasic technique
d. CT portography
,D. 1, 2 and 3 -- tachycardia, rapid and shallow breathing, and cyanosis
General signs and symptoms that a patient is going into shock include rapid breathing,
tachycardia, hypotension, weak pulse, pallor, cyanosis, and cold, clammy skin. correct answers
A patient in shock may exhibit which of the following symptoms?
1. tachycardia
2. rapid, shallow breathing
3. cyanosis
a. 1 only
b. 1 and 2 only
c. 1 and 3 only
d. 1, 2, and 3
D. Corticosteroid
SOLU-CORTEF is a brand name for hydrocortisone, which is a type of corticosteroid.
Corticosteroids may be used during the treatment of anaphylactoid reactions to iodinated contrast
materials. correct answers The drug SOLU-CORTEF may be classified as which of the
following?
a. anticholinergic
b. bronchodilator
c. antihistamine
d. corticosteroid
C. Iohexol
Nonionic contrast include iopamidol (Isovue), iohexol (Omnipaque) and iopromide (Ultravist).
correct answers Which of the following is a nonionic contrast material?
a. iodamide
b. iothalamate
c. iohexol
d. diatrizoate
B. Dyspnea
Dysphagia: difficulty swallowing
Dysphasia: language disorder marked by deficiency in the generation of speech, and sometimes
also in its comprehension, due to brain disease or damage. correct answers Which of the
following terms is used to describe a patient who is having difficulty breathing?
a. dyslexia
b. dyspnea
c. dysphagia
d. dysphasia
, D. Implied consent
Occurs when a patient is in need of immediate medical services but is unconscious or physically
unable to consent to treatment.
The assumption is made that the patient would consent if able. correct answers Which of the
following describes the situation in which an assumption is made that an unconscious or
otherwise physically unable patient consents to medical treatment?
a. informed consent
b. witnessed consent
c. patient proxy
d. implied consent
D. T wave
Complete cardiac diastole is the period of atrial and ventricular relaxation after heart contraction.
The T wave of an electrocardiogram (ECG) corresponds to cardiac diastole. correct answers
Complete cardiac diastole corresponds to which portion of the cardiac cycle on an
electrocardiogram (ECG)?
a. P wave
b. QRS complex
c. alpha wave
d. T wave
A. Joint space correct answers During CT arthrography, iodinated contrast media is injected
directly into the:
a. joint space
b. intrathecal space
c. subarachnoid space
d. venous bloodstream
A. Iodixanol
Iodixanol (Visipaque) is an example of a nonionic iso-osmolar contrast agent.
Iohexol (Omnipaque), iopamidol (Isovue), and ioversol (Optiray) are all nonionic low-osmolar
contrast media (LOCM). correct answers Which of the following is considered one of the iso-
osmolar contrast media (IOCM)?
a. iodixanol
b. iopamidol
c. iohexol
d. ioversol
