TNCC 20th Edition Questions and Answers 2025-2026 Best
Graded A+
When would you use a nasopharyngeal airway versus an oral pharyngeal airway? - ANSNasopharyngeal
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.
When capnography measurement reads less than 35MMHG, the nurse should consider increasing or
decreasing the ventilation rate? - ANSDecreasing the ventilation rate. By doing so, the nurse allows the
patient to retain CO2.
When capnography measurement reads greater than 45MMHG, the nurse should consider increasing or
decreasing the ventilation rate? - ANSIncreasing the ventilation rate. Doing so would allow the patient to
blow off retained CO2.
What is torsion? - ANSTorsion forces twist ends in opposite directions.
What is the trauma triad of death? - ANShypothermia, acidosis, coagulopathy
What is the relationship between mass and velocity to kinetic energy? - ANSKinetic 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 the recommended fluid bolus for a trauma? - ANS500 ML's of warmed isotonic crystalloid.
Ongoing fluid boluses of 500 ML's should be given judiciously with constant reassessments after
administration.
What is the Munro-Kellie doctrine? - ANSWithin the skull 80% his brain, 10% is blood, and 10% is CSF.
Any increase of any of the products results in increased intracranial pressure.
What is the minimum permissive oxygenation level of a trauma patient? - ANSGreater than or equal to
94%
What is the minimum permissive hypertension and a trauma patient? - ANSA systolic of greater than or
equal to 90 MMHG
What is tension? - ANSstretching force by pulling at opposite ends
What is shearing? - ANSDamage by tearing or bending by exerting faucet different parts in opposite
directions at the same time.
What is Cullen's sign and its significance? - ANSCullens sign is periumbilical bruising and is indicative of
intraperitoneal bleeding
What is compression? - ANSCrushing by squeezing together
What is combined loading? - ANSAny combination of tension compression torsion bending and/or shear.
What is bending? - ANSLoading about an axis. Bending causes compression on the side the person is
bending toward intention to the opposite side
What is a trademark symptom of an epidural hematoma - ANSLoss of consciousness then awake and
alert then loss of consciousness
What causes the tertiary effects of blast traumas? - ANSResults 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 the secondary effects of blast traumas? - ANSProjectiles propelled by the explosion. Injuries
include penetrating or blunt injuries or I penetration.
What causes the primary effects of blast traumas? - ANSThe 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 quinary effects of blasts traumas? - ANSThose 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 causes quarternary effects of blast traumas? - ANSAll explosion related injuries, illnesses, or
diseases not due to the first three mechanisms. Injuries include external and internal burns, crush injuries,
Graded A+
When would you use a nasopharyngeal airway versus an oral pharyngeal airway? - ANSNasopharyngeal
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.
When capnography measurement reads less than 35MMHG, the nurse should consider increasing or
decreasing the ventilation rate? - ANSDecreasing the ventilation rate. By doing so, the nurse allows the
patient to retain CO2.
When capnography measurement reads greater than 45MMHG, the nurse should consider increasing or
decreasing the ventilation rate? - ANSIncreasing the ventilation rate. Doing so would allow the patient to
blow off retained CO2.
What is torsion? - ANSTorsion forces twist ends in opposite directions.
What is the trauma triad of death? - ANShypothermia, acidosis, coagulopathy
What is the relationship between mass and velocity to kinetic energy? - ANSKinetic 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 the recommended fluid bolus for a trauma? - ANS500 ML's of warmed isotonic crystalloid.
Ongoing fluid boluses of 500 ML's should be given judiciously with constant reassessments after
administration.
What is the Munro-Kellie doctrine? - ANSWithin the skull 80% his brain, 10% is blood, and 10% is CSF.
Any increase of any of the products results in increased intracranial pressure.
What is the minimum permissive oxygenation level of a trauma patient? - ANSGreater than or equal to
94%
What is the minimum permissive hypertension and a trauma patient? - ANSA systolic of greater than or
equal to 90 MMHG
What is tension? - ANSstretching force by pulling at opposite ends
What is shearing? - ANSDamage by tearing or bending by exerting faucet different parts in opposite
directions at the same time.
What is Cullen's sign and its significance? - ANSCullens sign is periumbilical bruising and is indicative of
intraperitoneal bleeding
What is compression? - ANSCrushing by squeezing together
What is combined loading? - ANSAny combination of tension compression torsion bending and/or shear.
What is bending? - ANSLoading about an axis. Bending causes compression on the side the person is
bending toward intention to the opposite side
What is a trademark symptom of an epidural hematoma - ANSLoss of consciousness then awake and
alert then loss of consciousness
What causes the tertiary effects of blast traumas? - ANSResults 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 the secondary effects of blast traumas? - ANSProjectiles propelled by the explosion. Injuries
include penetrating or blunt injuries or I penetration.
What causes the primary effects of blast traumas? - ANSThe 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 quinary effects of blasts traumas? - ANSThose 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 causes quarternary effects of blast traumas? - ANSAll explosion related injuries, illnesses, or
diseases not due to the first three mechanisms. Injuries include external and internal burns, crush injuries,
