EMT-I EMERGENCY MEDICAL TECHNICIAN
INTERMEDIATE CERTIFICATION EXAM PREP
2026 | 400+ VERIFIED PRACTICE QUESTIONS
WITH DETAILED RATIONALES | ADVANCED
EMS STUDY GUIDE
EMT-I EMERGENCY MEDICAL TECHNICIAN INTERMEDIATE
CERTIFICATION EXAM PREP
400+ VERIFIED PRACTICE QUESTIONS WITH DETAILED RATIONALE
ADVANCED EMS STUDY GUIDE
HOW TO USE THIS GUIDE: Each question is followed by five options (A–E). The
CORRECT ANSWER is marked with . Read the RATIONALE carefully to
reinforce understanding.
SECTION 1: AIRWAY MANAGEMENT & VENTILATION
Q1. What is the normal respiratory rate for an adult at rest?
A. 5–8 breaths/min B. 8–10 breaths/min C. 12–20 breaths/min D. 22–28 breaths/min
E. 30–36 breaths/min
CORRECT ANSWER: C RATIONALE: The normal adult respiratory rate
is 12–20 breaths per minute. Rates below 12 indicate bradypnea and may signal CNS
depression or respiratory failure. Rates above 20 suggest tachypnea, which may result
from hypoxia, anxiety, or metabolic acidosis.
Q2. Which airway structure is responsible for preventing aspiration of food and
liquids into the trachea?
A. Uvula B. Soft palate C. Epiglottis D. Thyroid cartilage E. Cricoid cartilage
CORRECT ANSWER: C RATIONALE: The epiglottis is a leaf-shaped
cartilaginous structure that folds over the glottic opening during swallowing, preventing
food and liquid from entering the trachea. Its dysfunction leads to aspiration.
,Q3. When performing a jaw-thrust maneuver, what is the PRIMARY purpose?
A. To increase tidal volume B. To open the airway without extending the neck C. To
facilitate nasopharyngeal airway insertion D. To improve oxygen saturation rapidly E. To
eliminate secretions from the oropharynx
CORRECT ANSWER: B RATIONALE: The jaw-thrust maneuver is the
preferred technique for opening the airway in patients with suspected cervical spine
injury. It moves the mandible anteriorly to lift the tongue without requiring neck
extension, thus protecting the spinal cord.
Q4. A patient has a SpO₂ of 88% on room air. What is the MOST appropriate initial
intervention?
A. Immediate endotracheal intubation B. Cricothyrotomy C. Supplemental oxygen via
non-rebreather mask D. Bag-valve-mask ventilation at 30 breaths/min E.
Nasotracheal intubation
CORRECT ANSWER: C RATIONALE: An SpO₂ of 88% indicates
hypoxemia. The first step is to administer high-flow supplemental oxygen via a non-
rebreather mask, which can deliver up to 90–100% FiO₂. Invasive procedures are
reserved for patients who do not respond to supplemental oxygen or have inadequate
ventilation.
Q5. Which of the following is the MOST reliable confirmation of correct
endotracheal tube placement?
A. Bilateral breath sounds on auscultation B. Visualization of the tube passing through
the vocal cords C. Rise and fall of the chest D. Absence of gastric sounds over the
epigastrium E. End-tidal CO₂ reading above 20 mmHg
CORRECT ANSWER: B RATIONALE: Direct visualization of the
endotracheal tube passing through the vocal cords is the most definitive confirmation of
correct placement. While waveform capnography and bilateral breath sounds are critical
secondary confirmations, direct visualization remains the gold standard during the
intubation process.
,Q6. A 45-year-old male is found unresponsive with no gag reflex. His SpO₂ is 90%.
What airway device is MOST appropriate?
A. Oropharyngeal airway (OPA) alone B. Nasopharyngeal airway (NPA) alone C.
Endotracheal intubation D. Cricothyrotomy E. Supraglottic airway only
CORRECT ANSWER: C RATIONALE: An unresponsive patient without
a gag reflex with persistent hypoxemia requires definitive airway management.
Endotracheal intubation provides the most secure airway, protecting against aspiration
and allowing for controlled ventilation. OPA and NPA are adjuncts, not definitive airways.
Q7. What is the correct depth of ETT insertion for the average adult male
measured from the teeth?
A. 14–16 cm B. 17–19 cm C. 20–23 cm D. 24–27 cm E. 28–30 cm
CORRECT ANSWER: C RATIONALE: For an average adult male, the
endotracheal tube should be inserted to approximately 21–23 cm at the teeth (or 19–21
cm for females). Inserting too deeply risks right mainstem intubation; too shallow risks
displacement.
Q8. During BVM ventilation, each breath should be delivered over how long?
A. 0.5 seconds B. 1 second C. 2.5 seconds D. 3 seconds E. 4 seconds
CORRECT ANSWER: B RATIONALE: Each BVM breath should be
delivered over approximately 1 second — just enough to produce visible chest rise.
Delivering breaths too quickly or forcefully causes gastric inflation and increases
aspiration risk.
Q9. A 6-year-old child requires endotracheal intubation. Using the formula for
uncuffed ETT size, what size tube should be used?
A. 4.0 mm B. 4.5 mm C. 5.0 mm D. 5.5 mm E. 6.0 mm
CORRECT ANSWER: C RATIONALE: The formula for uncuffed ETT
size in pediatrics is: (Age in years ÷ 4) + 4. For a 6-year-old: (6 ÷ 4) + 4 = 5.5 mm.
However, many protocols also accept 5.0 mm for age 6, with providers selecting nearest
available size. Always confirm with Broselow tape when available.
, Q10. Which of the following best describes sellick's maneuver (cricoid pressure)?
A. Pressure on the thyroid cartilage to improve visualization B. Backward, upward, and
rightward pressure on the cricoid ring C. Forward pressure on the hyoid bone to
open the airway D. Lateral compression of the trachea during intubation E. Pressure on
the suprasternal notch during intubation
CORRECT ANSWER: B RATIONALE: Sellick's maneuver (BURP -
Backward, Upward, Rightward Pressure) applies pressure to the cricoid cartilage to
compress the esophagus against the cervical vertebrae, thereby reducing passive
regurgitation risk during intubation.
Q11. Which lung sounds indicate pulmonary edema or fluid in the alveoli?
A. Wheezing B. Stridor C. Rhonchi D. Crackles (rales) E. Friction rub
CORRECT ANSWER: D RATIONALE: Crackles (rales) are
discontinuous, popping sounds heard during auscultation that indicate fluid in the alveoli
or small airways. They are classically associated with pulmonary edema, pneumonia,
and congestive heart failure.
Q12. What does end-tidal CO₂ (EtCO₂) monitoring PRIMARILY confirm during
CPR?
A. Oxygen delivery to tissues B. Cardiac output and perfusion effectiveness C.
Arterial blood pH D. Correct ETT placement only E. Degree of metabolic acidosis
CORRECT ANSWER: B RATIONALE: During CPR, EtCO₂ values
directly correlate with cardiac output and coronary perfusion pressure. A sustained
EtCO₂ below 10 mmHg during CPR suggests poor perfusion. A sudden rise in EtCO₂
(>35–40 mmHg) often indicates ROSC.
Q13. A patient has stridor. This sound MOST likely indicates:
A. Lower airway bronchoconstriction B. Fluid accumulation in alveoli C. Upper airway
obstruction D. Pleural friction E. Pneumothorax
INTERMEDIATE CERTIFICATION EXAM PREP
2026 | 400+ VERIFIED PRACTICE QUESTIONS
WITH DETAILED RATIONALES | ADVANCED
EMS STUDY GUIDE
EMT-I EMERGENCY MEDICAL TECHNICIAN INTERMEDIATE
CERTIFICATION EXAM PREP
400+ VERIFIED PRACTICE QUESTIONS WITH DETAILED RATIONALE
ADVANCED EMS STUDY GUIDE
HOW TO USE THIS GUIDE: Each question is followed by five options (A–E). The
CORRECT ANSWER is marked with . Read the RATIONALE carefully to
reinforce understanding.
SECTION 1: AIRWAY MANAGEMENT & VENTILATION
Q1. What is the normal respiratory rate for an adult at rest?
A. 5–8 breaths/min B. 8–10 breaths/min C. 12–20 breaths/min D. 22–28 breaths/min
E. 30–36 breaths/min
CORRECT ANSWER: C RATIONALE: The normal adult respiratory rate
is 12–20 breaths per minute. Rates below 12 indicate bradypnea and may signal CNS
depression or respiratory failure. Rates above 20 suggest tachypnea, which may result
from hypoxia, anxiety, or metabolic acidosis.
Q2. Which airway structure is responsible for preventing aspiration of food and
liquids into the trachea?
A. Uvula B. Soft palate C. Epiglottis D. Thyroid cartilage E. Cricoid cartilage
CORRECT ANSWER: C RATIONALE: The epiglottis is a leaf-shaped
cartilaginous structure that folds over the glottic opening during swallowing, preventing
food and liquid from entering the trachea. Its dysfunction leads to aspiration.
,Q3. When performing a jaw-thrust maneuver, what is the PRIMARY purpose?
A. To increase tidal volume B. To open the airway without extending the neck C. To
facilitate nasopharyngeal airway insertion D. To improve oxygen saturation rapidly E. To
eliminate secretions from the oropharynx
CORRECT ANSWER: B RATIONALE: The jaw-thrust maneuver is the
preferred technique for opening the airway in patients with suspected cervical spine
injury. It moves the mandible anteriorly to lift the tongue without requiring neck
extension, thus protecting the spinal cord.
Q4. A patient has a SpO₂ of 88% on room air. What is the MOST appropriate initial
intervention?
A. Immediate endotracheal intubation B. Cricothyrotomy C. Supplemental oxygen via
non-rebreather mask D. Bag-valve-mask ventilation at 30 breaths/min E.
Nasotracheal intubation
CORRECT ANSWER: C RATIONALE: An SpO₂ of 88% indicates
hypoxemia. The first step is to administer high-flow supplemental oxygen via a non-
rebreather mask, which can deliver up to 90–100% FiO₂. Invasive procedures are
reserved for patients who do not respond to supplemental oxygen or have inadequate
ventilation.
Q5. Which of the following is the MOST reliable confirmation of correct
endotracheal tube placement?
A. Bilateral breath sounds on auscultation B. Visualization of the tube passing through
the vocal cords C. Rise and fall of the chest D. Absence of gastric sounds over the
epigastrium E. End-tidal CO₂ reading above 20 mmHg
CORRECT ANSWER: B RATIONALE: Direct visualization of the
endotracheal tube passing through the vocal cords is the most definitive confirmation of
correct placement. While waveform capnography and bilateral breath sounds are critical
secondary confirmations, direct visualization remains the gold standard during the
intubation process.
,Q6. A 45-year-old male is found unresponsive with no gag reflex. His SpO₂ is 90%.
What airway device is MOST appropriate?
A. Oropharyngeal airway (OPA) alone B. Nasopharyngeal airway (NPA) alone C.
Endotracheal intubation D. Cricothyrotomy E. Supraglottic airway only
CORRECT ANSWER: C RATIONALE: An unresponsive patient without
a gag reflex with persistent hypoxemia requires definitive airway management.
Endotracheal intubation provides the most secure airway, protecting against aspiration
and allowing for controlled ventilation. OPA and NPA are adjuncts, not definitive airways.
Q7. What is the correct depth of ETT insertion for the average adult male
measured from the teeth?
A. 14–16 cm B. 17–19 cm C. 20–23 cm D. 24–27 cm E. 28–30 cm
CORRECT ANSWER: C RATIONALE: For an average adult male, the
endotracheal tube should be inserted to approximately 21–23 cm at the teeth (or 19–21
cm for females). Inserting too deeply risks right mainstem intubation; too shallow risks
displacement.
Q8. During BVM ventilation, each breath should be delivered over how long?
A. 0.5 seconds B. 1 second C. 2.5 seconds D. 3 seconds E. 4 seconds
CORRECT ANSWER: B RATIONALE: Each BVM breath should be
delivered over approximately 1 second — just enough to produce visible chest rise.
Delivering breaths too quickly or forcefully causes gastric inflation and increases
aspiration risk.
Q9. A 6-year-old child requires endotracheal intubation. Using the formula for
uncuffed ETT size, what size tube should be used?
A. 4.0 mm B. 4.5 mm C. 5.0 mm D. 5.5 mm E. 6.0 mm
CORRECT ANSWER: C RATIONALE: The formula for uncuffed ETT
size in pediatrics is: (Age in years ÷ 4) + 4. For a 6-year-old: (6 ÷ 4) + 4 = 5.5 mm.
However, many protocols also accept 5.0 mm for age 6, with providers selecting nearest
available size. Always confirm with Broselow tape when available.
, Q10. Which of the following best describes sellick's maneuver (cricoid pressure)?
A. Pressure on the thyroid cartilage to improve visualization B. Backward, upward, and
rightward pressure on the cricoid ring C. Forward pressure on the hyoid bone to
open the airway D. Lateral compression of the trachea during intubation E. Pressure on
the suprasternal notch during intubation
CORRECT ANSWER: B RATIONALE: Sellick's maneuver (BURP -
Backward, Upward, Rightward Pressure) applies pressure to the cricoid cartilage to
compress the esophagus against the cervical vertebrae, thereby reducing passive
regurgitation risk during intubation.
Q11. Which lung sounds indicate pulmonary edema or fluid in the alveoli?
A. Wheezing B. Stridor C. Rhonchi D. Crackles (rales) E. Friction rub
CORRECT ANSWER: D RATIONALE: Crackles (rales) are
discontinuous, popping sounds heard during auscultation that indicate fluid in the alveoli
or small airways. They are classically associated with pulmonary edema, pneumonia,
and congestive heart failure.
Q12. What does end-tidal CO₂ (EtCO₂) monitoring PRIMARILY confirm during
CPR?
A. Oxygen delivery to tissues B. Cardiac output and perfusion effectiveness C.
Arterial blood pH D. Correct ETT placement only E. Degree of metabolic acidosis
CORRECT ANSWER: B RATIONALE: During CPR, EtCO₂ values
directly correlate with cardiac output and coronary perfusion pressure. A sustained
EtCO₂ below 10 mmHg during CPR suggests poor perfusion. A sudden rise in EtCO₂
(>35–40 mmHg) often indicates ROSC.
Q13. A patient has stridor. This sound MOST likely indicates:
A. Lower airway bronchoconstriction B. Fluid accumulation in alveoli C. Upper airway
obstruction D. Pleural friction E. Pneumothorax
