AMRT Practice Exam Prep – Real Practice Questions, Answers & Detailed
Rationales (Updated 2026) | Radiologic Imaging Procedures &
Patient Positioning, Radiation Protection & Safety Standards, X-Ray
Physics & Exposure Factors, Anatomy for Radiography, Image Evaluation
Techniques, Clinical Patient Care, Medical Ethics & ARRT/AMRT
Certification Review
Question 1: When assessing a patient with suspected acute coronary syndrome,
which finding most strongly indicates left ventricular failure?
A. Bilateral pedal edema
B. Jugular venous distension
C. Fine crackles in the lung bases
D. Diaphoresis and pallor
CORRECT ANSWER: C. Fine crackles in the lung bases
Rationale: Fine crackles (rales) in the lung bases indicate pulmonary edema secondary
to left ventricular failure, where impaired left ventricular pumping leads to fluid backup
into the pulmonary circulation. While JVD suggests right-sided heart failure, bilateral
pedal edema indicates chronic fluid retention, and diaphoresis/pallor are general
sympathetic responses not specific to ventricular failure.
Question 2: In the management of a patient experiencing anaphylaxis, which
intervention should be administered first after ensuring scene safety and ABCs?
A. Intravenous corticosteroids
B. Nebulized albuterol
C. Intramuscular epinephrine
D. Subcutaneous diphenhydramine
CORRECT ANSWER: C. Intramuscular epinephrine
Rationale: Epinephrine is the first-line treatment for anaphylaxis because it rapidly
reverses bronchospasm, increases peripheral vascular tone, and stabilizes mast cells.
Corticosteroids and antihistamines have delayed onset and are adjunctive. Albuterol
addresses bronchospasm but does not treat systemic vasodilation or airway edema.
Question 3: A trauma patient presents with paradoxical chest wall movement
following blunt thoracic injury. This clinical sign is most indicative of:
A. Pulmonary contusion
B. Flail chest
C. Tension pneumothorax
D. Hemothorax
CORRECT ANSWER: B. Flail chest
Rationale: Paradoxical chest wall movement occurs when a segment of the rib cage
fractures in multiple places, becoming detached from the thoracic wall. This segment
,moves inward during inspiration and outward during expiration, characteristic of flail
chest. Pulmonary contusion causes hypoxia but not paradoxical movement, while
tension pneumothorax and hemothorax present with diminished breath sounds and
tracheal deviation.
Question 4: During pediatric resuscitation, which compression-to-ventilation ratio
is recommended for a single rescuer?
A. 15:2
B. 30:2
C. 10:1
D. 20:1
CORRECT ANSWER: A. 15:2
Rationale: For single-rescuer pediatric CPR, the recommended compression-to-
ventilation ratio is 15:2 to prioritize oxygenation while maintaining adequate perfusion.
The 30:2 ratio is standard for adult CPR. Two-rescuer pediatric CPR also uses 15:2. The
10:1 and 20:1 ratios are not guideline-supported.
Question 5: Which medication class is contraindicated in patients with suspected
increased intracranial pressure due to the risk of worsening cerebral edema?
A. Osmotic diuretics
B. Benzodiazepines
C. Hypertonic saline
D. Corticosteroids
CORRECT ANSWER: B. Benzodiazepines
Rationale: Benzodiazepines can cause respiratory depression, leading to hypercapnia,
cerebral vasodilation, and increased intracranial pressure. Osmotic diuretics and
hypertonic saline are used to reduce cerebral edema. Corticosteroids are sometimes
used for tumor-related edema but not contraindicated in general increased ICP
management contexts where controlled ventilation is maintained.
Question 6: When performing needle decompression for a suspected tension
pneumothorax, the preferred insertion site in an adult is:
A. Midclavicular line, second intercostal space
B. Anterior axillary line, fifth intercostal space
C. Midaxillary line, fourth intercostal space
D. Suprasternal notch, first intercostal space
CORRECT ANSWER: A. Midclavicular line, second intercostal space
Rationale: The traditional and widely accepted site for needle thoracostomy in adults is
the second intercostal space at the midclavicular line, providing direct access to the
pleural space while avoiding major vessels. Alternative sites include the fourth/fifth
,intercostal space at the anterior axillary line, but the midclavicular second intercostal
space remains standard in most prehospital protocols.
Question 7: A patient presents with severe abdominal pain, rigid abdomen, and
rebound tenderness. Which condition should be highest on the differential
diagnosis?
A. Acute pancreatitis
B. Peritonitis
C. Gastroenteritis
D. Irritable bowel syndrome
CORRECT ANSWER: B. Peritonitis
Rationale: Peritonitis classically presents with severe abdominal pain, guarding, rigidity,
and rebound tenderness due to inflammation of the peritoneal lining. Acute pancreatitis
causes epigastric pain radiating to the back but less rigidity. Gastroenteritis typically
causes diffuse cramping with diarrhea/vomiting. Irritable bowel syndrome is functional
and does not cause peritoneal signs.
Question 8: Which of the following best describes the mechanism of action of
naloxone in opioid overdose?
A. Competitive mu-opioid receptor antagonist
B. Noncompetitive GABA receptor agonist
C. Reversible acetylcholinesterase inhibitor
D. Selective serotonin reuptake enhancer
CORRECT ANSWER: A. Competitive mu-opioid receptor antagonist
Rationale: Naloxone works by competitively binding to mu-opioid receptors, displacing
opioid agonists and rapidly reversing respiratory depression and sedation. It has no
effect on GABA, acetylcholinesterase, or serotonin pathways, making it highly specific
for opioid toxicity reversal.
Question 9: During triage using the START method, a patient who breathes but
cannot follow commands and has absent radial pulses should be tagged as:
A. Green
B. Yellow
C. Red
D. Black
CORRECT ANSWER: C. Red
Rationale: In START triage, inability to follow simple commands (altered mental status)
combined with absent radial pulses (indicating poor perfusion/systolic BP <80 mmHg)
classifies the patient as Immediate (Red), requiring rapid intervention. Green is minor,
Yellow is delayed, and Black is expectant/deceased.
, Question 10: Which electrocardiographic finding is most specific for acute
myocardial infarction?
A. Sinus tachycardia
B. ST-segment elevation
C. Prolonged QT interval
D. Inverted T waves
CORRECT ANSWER: B. ST-segment elevation
Rationale: ST-segment elevation in contiguous leads is the hallmark ECG finding for
acute transmural myocardial injury (STEMI). Sinus tachycardia is nonspecific, prolonged
QT can be drug-induced or congenital, and inverted T waves suggest ischemia but are
less specific than ST elevation for acute infarction.
Question 11: When administering oxygen via a nonrebreather mask, the minimum
flow rate required to prevent CO2 rebreathing is:
A. 6 L/min
B. 10 L/min
C. 15 L/min
D. 20 L/min
CORRECT ANSWER: C. 15 L/min
Rationale: Nonrebreather masks require a minimum flow rate of 15 L/min to keep the
reservoir bag inflated and flush exhaled CO2 from the mask, ensuring delivery of high
FiO2 (up to 90%). Lower flow rates allow bag collapse and potential CO2 rebreathing,
reducing oxygen delivery efficacy.
Question 12: A patient with diabetes mellitus presents with rapid breathing, fruity
breath odor, and altered mental status. Which laboratory finding would confirm the
suspected diagnosis?
A. Serum sodium 128 mEq/L
B. Blood glucose 420 mg/dL with ketonemia
C. Serum potassium 6.2 mEq/L
D. Blood urea nitrogen 8 mg/dL
CORRECT ANSWER: B. Blood glucose 420 mg/dL with ketonemia
Rationale: The presentation is classic for diabetic ketoacidosis (DKA). Hyperglycemia
(>250 mg/dL) with ketonemia/ketonuria and high anion gap metabolic acidosis confirms
DKA. Electrolyte abnormalities may accompany DKA but are not diagnostic alone. BUN
of 8 is normal and not indicative of DKA.
Question 13: Which spinal immobilization technique is most appropriate for a
patient found in a vehicle rollover with suspected cervical spine injury?
Rationales (Updated 2026) | Radiologic Imaging Procedures &
Patient Positioning, Radiation Protection & Safety Standards, X-Ray
Physics & Exposure Factors, Anatomy for Radiography, Image Evaluation
Techniques, Clinical Patient Care, Medical Ethics & ARRT/AMRT
Certification Review
Question 1: When assessing a patient with suspected acute coronary syndrome,
which finding most strongly indicates left ventricular failure?
A. Bilateral pedal edema
B. Jugular venous distension
C. Fine crackles in the lung bases
D. Diaphoresis and pallor
CORRECT ANSWER: C. Fine crackles in the lung bases
Rationale: Fine crackles (rales) in the lung bases indicate pulmonary edema secondary
to left ventricular failure, where impaired left ventricular pumping leads to fluid backup
into the pulmonary circulation. While JVD suggests right-sided heart failure, bilateral
pedal edema indicates chronic fluid retention, and diaphoresis/pallor are general
sympathetic responses not specific to ventricular failure.
Question 2: In the management of a patient experiencing anaphylaxis, which
intervention should be administered first after ensuring scene safety and ABCs?
A. Intravenous corticosteroids
B. Nebulized albuterol
C. Intramuscular epinephrine
D. Subcutaneous diphenhydramine
CORRECT ANSWER: C. Intramuscular epinephrine
Rationale: Epinephrine is the first-line treatment for anaphylaxis because it rapidly
reverses bronchospasm, increases peripheral vascular tone, and stabilizes mast cells.
Corticosteroids and antihistamines have delayed onset and are adjunctive. Albuterol
addresses bronchospasm but does not treat systemic vasodilation or airway edema.
Question 3: A trauma patient presents with paradoxical chest wall movement
following blunt thoracic injury. This clinical sign is most indicative of:
A. Pulmonary contusion
B. Flail chest
C. Tension pneumothorax
D. Hemothorax
CORRECT ANSWER: B. Flail chest
Rationale: Paradoxical chest wall movement occurs when a segment of the rib cage
fractures in multiple places, becoming detached from the thoracic wall. This segment
,moves inward during inspiration and outward during expiration, characteristic of flail
chest. Pulmonary contusion causes hypoxia but not paradoxical movement, while
tension pneumothorax and hemothorax present with diminished breath sounds and
tracheal deviation.
Question 4: During pediatric resuscitation, which compression-to-ventilation ratio
is recommended for a single rescuer?
A. 15:2
B. 30:2
C. 10:1
D. 20:1
CORRECT ANSWER: A. 15:2
Rationale: For single-rescuer pediatric CPR, the recommended compression-to-
ventilation ratio is 15:2 to prioritize oxygenation while maintaining adequate perfusion.
The 30:2 ratio is standard for adult CPR. Two-rescuer pediatric CPR also uses 15:2. The
10:1 and 20:1 ratios are not guideline-supported.
Question 5: Which medication class is contraindicated in patients with suspected
increased intracranial pressure due to the risk of worsening cerebral edema?
A. Osmotic diuretics
B. Benzodiazepines
C. Hypertonic saline
D. Corticosteroids
CORRECT ANSWER: B. Benzodiazepines
Rationale: Benzodiazepines can cause respiratory depression, leading to hypercapnia,
cerebral vasodilation, and increased intracranial pressure. Osmotic diuretics and
hypertonic saline are used to reduce cerebral edema. Corticosteroids are sometimes
used for tumor-related edema but not contraindicated in general increased ICP
management contexts where controlled ventilation is maintained.
Question 6: When performing needle decompression for a suspected tension
pneumothorax, the preferred insertion site in an adult is:
A. Midclavicular line, second intercostal space
B. Anterior axillary line, fifth intercostal space
C. Midaxillary line, fourth intercostal space
D. Suprasternal notch, first intercostal space
CORRECT ANSWER: A. Midclavicular line, second intercostal space
Rationale: The traditional and widely accepted site for needle thoracostomy in adults is
the second intercostal space at the midclavicular line, providing direct access to the
pleural space while avoiding major vessels. Alternative sites include the fourth/fifth
,intercostal space at the anterior axillary line, but the midclavicular second intercostal
space remains standard in most prehospital protocols.
Question 7: A patient presents with severe abdominal pain, rigid abdomen, and
rebound tenderness. Which condition should be highest on the differential
diagnosis?
A. Acute pancreatitis
B. Peritonitis
C. Gastroenteritis
D. Irritable bowel syndrome
CORRECT ANSWER: B. Peritonitis
Rationale: Peritonitis classically presents with severe abdominal pain, guarding, rigidity,
and rebound tenderness due to inflammation of the peritoneal lining. Acute pancreatitis
causes epigastric pain radiating to the back but less rigidity. Gastroenteritis typically
causes diffuse cramping with diarrhea/vomiting. Irritable bowel syndrome is functional
and does not cause peritoneal signs.
Question 8: Which of the following best describes the mechanism of action of
naloxone in opioid overdose?
A. Competitive mu-opioid receptor antagonist
B. Noncompetitive GABA receptor agonist
C. Reversible acetylcholinesterase inhibitor
D. Selective serotonin reuptake enhancer
CORRECT ANSWER: A. Competitive mu-opioid receptor antagonist
Rationale: Naloxone works by competitively binding to mu-opioid receptors, displacing
opioid agonists and rapidly reversing respiratory depression and sedation. It has no
effect on GABA, acetylcholinesterase, or serotonin pathways, making it highly specific
for opioid toxicity reversal.
Question 9: During triage using the START method, a patient who breathes but
cannot follow commands and has absent radial pulses should be tagged as:
A. Green
B. Yellow
C. Red
D. Black
CORRECT ANSWER: C. Red
Rationale: In START triage, inability to follow simple commands (altered mental status)
combined with absent radial pulses (indicating poor perfusion/systolic BP <80 mmHg)
classifies the patient as Immediate (Red), requiring rapid intervention. Green is minor,
Yellow is delayed, and Black is expectant/deceased.
, Question 10: Which electrocardiographic finding is most specific for acute
myocardial infarction?
A. Sinus tachycardia
B. ST-segment elevation
C. Prolonged QT interval
D. Inverted T waves
CORRECT ANSWER: B. ST-segment elevation
Rationale: ST-segment elevation in contiguous leads is the hallmark ECG finding for
acute transmural myocardial injury (STEMI). Sinus tachycardia is nonspecific, prolonged
QT can be drug-induced or congenital, and inverted T waves suggest ischemia but are
less specific than ST elevation for acute infarction.
Question 11: When administering oxygen via a nonrebreather mask, the minimum
flow rate required to prevent CO2 rebreathing is:
A. 6 L/min
B. 10 L/min
C. 15 L/min
D. 20 L/min
CORRECT ANSWER: C. 15 L/min
Rationale: Nonrebreather masks require a minimum flow rate of 15 L/min to keep the
reservoir bag inflated and flush exhaled CO2 from the mask, ensuring delivery of high
FiO2 (up to 90%). Lower flow rates allow bag collapse and potential CO2 rebreathing,
reducing oxygen delivery efficacy.
Question 12: A patient with diabetes mellitus presents with rapid breathing, fruity
breath odor, and altered mental status. Which laboratory finding would confirm the
suspected diagnosis?
A. Serum sodium 128 mEq/L
B. Blood glucose 420 mg/dL with ketonemia
C. Serum potassium 6.2 mEq/L
D. Blood urea nitrogen 8 mg/dL
CORRECT ANSWER: B. Blood glucose 420 mg/dL with ketonemia
Rationale: The presentation is classic for diabetic ketoacidosis (DKA). Hyperglycemia
(>250 mg/dL) with ketonemia/ketonuria and high anion gap metabolic acidosis confirms
DKA. Electrolyte abnormalities may accompany DKA but are not diagnostic alone. BUN
of 8 is normal and not indicative of DKA.
Question 13: Which spinal immobilization technique is most appropriate for a
patient found in a vehicle rollover with suspected cervical spine injury?
