TNCC 10th Edition Questions and Answers(2025
edition)
What are the greatest risks for transport? - ANS-Loss of airway patency, displaced
obstructive tubes lines or catheters, dislodge splinting devices, need to replace or
reinforce dressings, deterioration in patient status change in vital signs or level of
consciousness, injury to the patient and/or team members
According to newtons law which of these two force is greater: size or force? - ANS-
Neither. For each force there is an equal and opposite reaction.
What is the relationship between mass and velocity to kinetic energy? - ANS-Kinetic
energy is equal to 1/2 the mass multiplied the square of its velocity therefore when
mass is doubled so is the net energy, however, when velocity is doubled energy is
quadrupled.
What is tension? - ANS-stretching force by pulling at opposite ends
What is compression? - ANS-Crushing by squeezing together
What is bending? - ANS-Loading about an axis. Bending causes compression on the
side the person is bending toward intention to the opposite side
What is shearing? - ANS-Damage by tearing or bending by exerting faucet different
parts in opposite directions at the same time.
What is torsion? - ANS-Torsion forces twist ends in opposite directions.
What is combined loading? - ANS-Any combination of tension compression torsion
bending and/or shear.
What are the four types of trauma related injuries? - ANS-Blunt, penetrating, thermal, or
blast.
What are contributing factors to injuries related to blunt traumas? - ANS-The point of
impact on the patient's body, the type of surface that is hit, the tissues ability to resist
(bone versus soft tissue, air-filled versus solid organs), and the trajectory of force.
What are the seven patterns of pathway injuries related to motor vehicle accidents? -
ANS-Up and over, down and under, lateral, rotational, rear, roll over, and ejection.
Differentiate between the three impacts of motor vehicle impact sequence. - ANS-The
first impact occurs when the vehicle collided with another object. The second impact
occurs after the initial impact when the occupant continues to move in the original
, direction of travel until they collide with the interior of the vehicle or meet resistance.
The third impact occurs when internal structures collide within the body cavity.
What are the three factors that contribute to the damage caused by penetrating
trauma's? - ANS-The point of impact, the velocity and speed of impact, and the
proximity to the object.
What causes the primary effects of blast traumas? - ANS-The direct blast effects. Types
of injuries include last long, tympanic membrane rupture and middle ear damage,
abdominal hemorrhage and perforation, global rupture, mild Trumatic brain injury.
What causes the secondary effects of blast traumas? - ANS-Projectiles propelled by the
explosion. Injuries include penetrating or blunt injuries or I penetration.
What causes the tertiary effects of blast traumas? - ANS-Results from individuals being
thrown by the blast wind. Injuries include hole or partial body translocation from being
thrown against a hard service: blunt or penetrating trauma's, fractures, traumatic
amputations.
What causes quarternary effects of blast traumas? - ANS-All explosion related injuries,
illnesses, or diseases not due to the first three mechanisms. Injuries include external
and internal burns, crush injuries, closed and open brain injuries, asthmatic or breathing
problems from dust smoke or toxic fumes, angina, or hyper glycemia and hypertension.
What causes quinary effects of blasts traumas? - ANS-Those associated with exposure
to hazardous materials from radioactive, biologic, or chemical components of a blast.
Injuries include a variety of health effects depending on agent.
What are the three processes that transfer oxygen from the air to the lungs and blood
stream - ANS-Ventilation: the active mechanical movement of air into and out of the
lungs; diffusion: the passive movement of gases from an area of higher concentration to
an area of lower concentration; and perfusion: the movement of blood to and from the
lungs as a delivery medium of oxygen to the entire body.
When would you use a nasopharyngeal airway versus an oral pharyngeal airway? -
ANS-Nasopharyngeal airways is contraindicated in patients with facial trauma or a
suspected basilar skull fracture. Oral pharyngeal airways is used in unresponsive
patients unable to maintain their airway, without a gag reflex as a temporary measure to
facilitate ventilation with a bag mask device or spontaneous ventilation until the patient
can be intubated.
Describe the measurement of an NPA - ANS-Measure from the tip of the patient's nose
to the tip of the patients earlobe.
Measurement of an OPA - ANS-Place the proximal end or flange of the airway adjunct
at the corner of the mouth to the tip of the mandibular angle.
edition)
What are the greatest risks for transport? - ANS-Loss of airway patency, displaced
obstructive tubes lines or catheters, dislodge splinting devices, need to replace or
reinforce dressings, deterioration in patient status change in vital signs or level of
consciousness, injury to the patient and/or team members
According to newtons law which of these two force is greater: size or force? - ANS-
Neither. For each force there is an equal and opposite reaction.
What is the relationship between mass and velocity to kinetic energy? - ANS-Kinetic
energy is equal to 1/2 the mass multiplied the square of its velocity therefore when
mass is doubled so is the net energy, however, when velocity is doubled energy is
quadrupled.
What is tension? - ANS-stretching force by pulling at opposite ends
What is compression? - ANS-Crushing by squeezing together
What is bending? - ANS-Loading about an axis. Bending causes compression on the
side the person is bending toward intention to the opposite side
What is shearing? - ANS-Damage by tearing or bending by exerting faucet different
parts in opposite directions at the same time.
What is torsion? - ANS-Torsion forces twist ends in opposite directions.
What is combined loading? - ANS-Any combination of tension compression torsion
bending and/or shear.
What are the four types of trauma related injuries? - ANS-Blunt, penetrating, thermal, or
blast.
What are contributing factors to injuries related to blunt traumas? - ANS-The point of
impact on the patient's body, the type of surface that is hit, the tissues ability to resist
(bone versus soft tissue, air-filled versus solid organs), and the trajectory of force.
What are the seven patterns of pathway injuries related to motor vehicle accidents? -
ANS-Up and over, down and under, lateral, rotational, rear, roll over, and ejection.
Differentiate between the three impacts of motor vehicle impact sequence. - ANS-The
first impact occurs when the vehicle collided with another object. The second impact
occurs after the initial impact when the occupant continues to move in the original
, direction of travel until they collide with the interior of the vehicle or meet resistance.
The third impact occurs when internal structures collide within the body cavity.
What are the three factors that contribute to the damage caused by penetrating
trauma's? - ANS-The point of impact, the velocity and speed of impact, and the
proximity to the object.
What causes the primary effects of blast traumas? - ANS-The direct blast effects. Types
of injuries include last long, tympanic membrane rupture and middle ear damage,
abdominal hemorrhage and perforation, global rupture, mild Trumatic brain injury.
What causes the secondary effects of blast traumas? - ANS-Projectiles propelled by the
explosion. Injuries include penetrating or blunt injuries or I penetration.
What causes the tertiary effects of blast traumas? - ANS-Results from individuals being
thrown by the blast wind. Injuries include hole or partial body translocation from being
thrown against a hard service: blunt or penetrating trauma's, fractures, traumatic
amputations.
What causes quarternary effects of blast traumas? - ANS-All explosion related injuries,
illnesses, or diseases not due to the first three mechanisms. Injuries include external
and internal burns, crush injuries, closed and open brain injuries, asthmatic or breathing
problems from dust smoke or toxic fumes, angina, or hyper glycemia and hypertension.
What causes quinary effects of blasts traumas? - ANS-Those associated with exposure
to hazardous materials from radioactive, biologic, or chemical components of a blast.
Injuries include a variety of health effects depending on agent.
What are the three processes that transfer oxygen from the air to the lungs and blood
stream - ANS-Ventilation: the active mechanical movement of air into and out of the
lungs; diffusion: the passive movement of gases from an area of higher concentration to
an area of lower concentration; and perfusion: the movement of blood to and from the
lungs as a delivery medium of oxygen to the entire body.
When would you use a nasopharyngeal airway versus an oral pharyngeal airway? -
ANS-Nasopharyngeal airways is contraindicated in patients with facial trauma or a
suspected basilar skull fracture. Oral pharyngeal airways is used in unresponsive
patients unable to maintain their airway, without a gag reflex as a temporary measure to
facilitate ventilation with a bag mask device or spontaneous ventilation until the patient
can be intubated.
Describe the measurement of an NPA - ANS-Measure from the tip of the patient's nose
to the tip of the patients earlobe.
Measurement of an OPA - ANS-Place the proximal end or flange of the airway adjunct
at the corner of the mouth to the tip of the mandibular angle.
