TCRN Practice Questions || correct answers 100%.
A transcranial doppler is obtained for a patient with a traumatic subarachnoid hemorrhage. The
doppler is positive for vasospasm. The trauma nurse would expect which of the following
medications to be prescribed? correct answers A vasospasm is a known complication of
subarachnoid hemorrhages. Calcium channel blockers are used to prevent or reverse vasospasms
and are frequently used in the treatment of a subarachnoid hemorrhage. Metoprolol, Hydralazine
and Lisinopril are not calcium channel blockers and would not be effective to prevent and treat
vasospasms caused by a subarachnoid hemorrhage
Which chamber of the heart is most likely to be affected in blunt cardiac injuries? correct
answers Given the anatomical position of the heart in the chest, the right ventricle is most
exposed to the anterior portion of the chest wall and is most likely to be injured in a blunt cardiac
injury. Patients with blunt cardiac injuries frequently experience signs of right ventricular failure.
Additional findings that are associated with blunt cardiac injuries include hypotension, atrial
fibrillation, unexplained sinus tachycardia, multiple PVCs, ST segment changes and right bundle
branch blocks. The left atrium, right atrium and left ventricle are less likely to be injured in a
blunt cardiac injury.
A widened mediastinum is noted on the chest x-ray of a traumatically injured hypotensive
patient. The trauma nurse would anticipate gathering which of the following pieces of equipment
as the highest priority in this scenario? correct answers A widened mediastinum on chest x-ray,
accompanied by hypotension, is strongly indicative of an aortic injury. One of the most life-
threatening complications of an aortic injury is blood loss, which can be treated by giving blood
products via a rapid transfuser. Although patient assessment may be enhanced by inserting an
arterial line, this is less of a priority than giving fluids rapidly. A chest tube is placed in the
pleural space rather than the mediastinum and is therefore not indicated in this scenario.
Similarly, there is nothing in this scenario that indicates a pericardiocentesis is indicated so this is
not a higher priority than preparing a rapid transfuser.
A properly applied pelvic binder sits across the: correct answers A properly applied pelvic binder
is applied across the greater trochanters of the femur. This allows for optimal compression of the
pelvis to control bleeding. Applying it across the midshaft of the femur is too low and would
provide no therapeutic benefit. Applying it across the pelvic ring or the iliac crests is too high
and could actually separate the pelvis further, increasing bleeding and internal damage.
,Treatment for an extraperitoneal bladder rupture will most likely include: correct answers
Bladder lacerations that are located below the pelvic peritoneum are diagnosed as an
extraperitoneal bladder rupture. If a laceration is found along with pelvic peritoneum, it would
then be classified as an intraperitoneal bladder rupture. Management of an extraperitoneal
bladder rupture involves urinary catheterization (urethral or suprapubic) to facilitate urinary
drainage from the bladder. Intraperitoneal bladder ruptures require surgical intervention for
definitive closure. An isolated extraperitoneal bladder rupture does not require emergent surgical
repair or interventional radiology.
Hyperextension of the neck is known to cause: correct answers Hyperextension of the neck (the
head snapping backwards commonly seen in "whiplash" injuries) causes compression and
damage to the posterior portion of the spinal cord. In anterior cord syndrome, the mechanism of
injury is the opposite of posterior cord syndrome (a hyperflexion injury where the neck
hyperextends forward - chin to chest) causing injury to the anterior portion of the spinal cord. A
cauda equina syndrome causes injury to the sacral nerve roots within the spinal canal and is
caused by falling directly on the sacrum. Brown-Sequard Syndrome caused by penetrating
trauma to the lateral aspect of the spinal cord will cause a left to right phenomenon instead of a
top down phenomenon.
A patient has a Zone II penetrating neck injury with penetration through the platysma. The
trauma nurse knows that this patient is at increased risk of injury to: correct answers The
platysma is a muscle in the neck that gives support and protection to the vital structures
underneath it. Any time there is penetration through the platysma, there is an increased risk of
damage to the underlying structures in the neck. The neck is divided into three zones. Zone I
extends from the sternal notch and clavicle up to the cricothyroid cartilage. Zone II extends from
the cricothyroid cartilage upward to the angle of the mandible. Zone III extends from the angle
of the mandible to the base of the skull. Structures found in Zone I include the subclavian artery,
vertebral artery, lung apices, trachea, thyroid and esophagus. Zone II includes the internal jugular
vein, esophagus, larynx, vagus nerve, carotid artery and vertebral artery. Zone III includes the
salivary and parotid glands, cranial nerves IX-XII, vertebral artery, distal carotid artery, and
distal jugular vein.
A pregnant patient's fundal height is palpated 6 cm above the umbilicus. What is the estimated
gestational age of the fetus? correct answers Fundal height is defined as the distance from the
pubic bone to the top of the uterus in centimeters. In general, the fundus reaches the umbilicus by
, 20 weeks. Every centimeter past that point is measured as 1 week. If every one centimeter above
the umbilicus equals one week, then the patient is approximately 26 weeks gestation.
Appropriate care for an amputated body part includes: correct answers When caring for an
amputated body part, the trauma nurse should clean the part removing any dirt and debris,
wrapping the part in a slightly saline moistened gauze, and then placing it in a sealed plastic bag.
At this time, the part should be placed in a second bag containing a mixture of ice and water. It is
imperative that the part does not freeze or does not come into contact with water (which is
hypotonic to body tissue). Also ensure that the amputated part is properly labeled with the patient
information.
Decontamination with water is discouraged in patients exposed to powdered: correct answers
Dry chemicals that should not be irrigated with water include dry lime, elemental metals
(including sodium, potassium, magnesium lithium and phosphorus) and phenol. When exposed
to water these substances will cause a harmful exothermic or "heat producing" reaction burning
the patient's skin. They may also release possible hazardous byproducts into the air. Sulfuric
acid, muriatic acid and cement can all be irrigated with copious amounts of water (although a
much of the dry chemical as possible should be brushed off before irrigation with water is
initiated)
Hypovolemic shock is most likely to be caused by: correct answers Hypovolemic shock is
caused by fluid loss (e.g. bleeding or diarrhea) or third spacing of fluids. The inflammatory
response caused by a burn leads to capillary permeability resulting in the third spacing of fluids
which results in hypovolemic shock. Cervical spinal injuries contribute to neurogenic rather than
hypovolemic shock. Although an epidural hematoma causes blood loss, the epidural space is
relatively small, so blood accumulation would not be enough to result in hypovolemic shock. A
tension pneumothorax would cause obstructive shock.
The best method for assessing capillary refill on a two-week old traumatically injured neonate is
to blanch the: correct answers The circulatory system of the neonate is not well developed and
perfusion to the fingers is not complete, therefore using the tip of the finger is reserved for older
children, adolescents and adults. It is generally recommended to use the forehead, sole of the
foot, the sternum or the palm of the hand as opposed to the skin over the iliac crest or the tip of
the child's tongue
A transcranial doppler is obtained for a patient with a traumatic subarachnoid hemorrhage. The
doppler is positive for vasospasm. The trauma nurse would expect which of the following
medications to be prescribed? correct answers A vasospasm is a known complication of
subarachnoid hemorrhages. Calcium channel blockers are used to prevent or reverse vasospasms
and are frequently used in the treatment of a subarachnoid hemorrhage. Metoprolol, Hydralazine
and Lisinopril are not calcium channel blockers and would not be effective to prevent and treat
vasospasms caused by a subarachnoid hemorrhage
Which chamber of the heart is most likely to be affected in blunt cardiac injuries? correct
answers Given the anatomical position of the heart in the chest, the right ventricle is most
exposed to the anterior portion of the chest wall and is most likely to be injured in a blunt cardiac
injury. Patients with blunt cardiac injuries frequently experience signs of right ventricular failure.
Additional findings that are associated with blunt cardiac injuries include hypotension, atrial
fibrillation, unexplained sinus tachycardia, multiple PVCs, ST segment changes and right bundle
branch blocks. The left atrium, right atrium and left ventricle are less likely to be injured in a
blunt cardiac injury.
A widened mediastinum is noted on the chest x-ray of a traumatically injured hypotensive
patient. The trauma nurse would anticipate gathering which of the following pieces of equipment
as the highest priority in this scenario? correct answers A widened mediastinum on chest x-ray,
accompanied by hypotension, is strongly indicative of an aortic injury. One of the most life-
threatening complications of an aortic injury is blood loss, which can be treated by giving blood
products via a rapid transfuser. Although patient assessment may be enhanced by inserting an
arterial line, this is less of a priority than giving fluids rapidly. A chest tube is placed in the
pleural space rather than the mediastinum and is therefore not indicated in this scenario.
Similarly, there is nothing in this scenario that indicates a pericardiocentesis is indicated so this is
not a higher priority than preparing a rapid transfuser.
A properly applied pelvic binder sits across the: correct answers A properly applied pelvic binder
is applied across the greater trochanters of the femur. This allows for optimal compression of the
pelvis to control bleeding. Applying it across the midshaft of the femur is too low and would
provide no therapeutic benefit. Applying it across the pelvic ring or the iliac crests is too high
and could actually separate the pelvis further, increasing bleeding and internal damage.
,Treatment for an extraperitoneal bladder rupture will most likely include: correct answers
Bladder lacerations that are located below the pelvic peritoneum are diagnosed as an
extraperitoneal bladder rupture. If a laceration is found along with pelvic peritoneum, it would
then be classified as an intraperitoneal bladder rupture. Management of an extraperitoneal
bladder rupture involves urinary catheterization (urethral or suprapubic) to facilitate urinary
drainage from the bladder. Intraperitoneal bladder ruptures require surgical intervention for
definitive closure. An isolated extraperitoneal bladder rupture does not require emergent surgical
repair or interventional radiology.
Hyperextension of the neck is known to cause: correct answers Hyperextension of the neck (the
head snapping backwards commonly seen in "whiplash" injuries) causes compression and
damage to the posterior portion of the spinal cord. In anterior cord syndrome, the mechanism of
injury is the opposite of posterior cord syndrome (a hyperflexion injury where the neck
hyperextends forward - chin to chest) causing injury to the anterior portion of the spinal cord. A
cauda equina syndrome causes injury to the sacral nerve roots within the spinal canal and is
caused by falling directly on the sacrum. Brown-Sequard Syndrome caused by penetrating
trauma to the lateral aspect of the spinal cord will cause a left to right phenomenon instead of a
top down phenomenon.
A patient has a Zone II penetrating neck injury with penetration through the platysma. The
trauma nurse knows that this patient is at increased risk of injury to: correct answers The
platysma is a muscle in the neck that gives support and protection to the vital structures
underneath it. Any time there is penetration through the platysma, there is an increased risk of
damage to the underlying structures in the neck. The neck is divided into three zones. Zone I
extends from the sternal notch and clavicle up to the cricothyroid cartilage. Zone II extends from
the cricothyroid cartilage upward to the angle of the mandible. Zone III extends from the angle
of the mandible to the base of the skull. Structures found in Zone I include the subclavian artery,
vertebral artery, lung apices, trachea, thyroid and esophagus. Zone II includes the internal jugular
vein, esophagus, larynx, vagus nerve, carotid artery and vertebral artery. Zone III includes the
salivary and parotid glands, cranial nerves IX-XII, vertebral artery, distal carotid artery, and
distal jugular vein.
A pregnant patient's fundal height is palpated 6 cm above the umbilicus. What is the estimated
gestational age of the fetus? correct answers Fundal height is defined as the distance from the
pubic bone to the top of the uterus in centimeters. In general, the fundus reaches the umbilicus by
, 20 weeks. Every centimeter past that point is measured as 1 week. If every one centimeter above
the umbilicus equals one week, then the patient is approximately 26 weeks gestation.
Appropriate care for an amputated body part includes: correct answers When caring for an
amputated body part, the trauma nurse should clean the part removing any dirt and debris,
wrapping the part in a slightly saline moistened gauze, and then placing it in a sealed plastic bag.
At this time, the part should be placed in a second bag containing a mixture of ice and water. It is
imperative that the part does not freeze or does not come into contact with water (which is
hypotonic to body tissue). Also ensure that the amputated part is properly labeled with the patient
information.
Decontamination with water is discouraged in patients exposed to powdered: correct answers
Dry chemicals that should not be irrigated with water include dry lime, elemental metals
(including sodium, potassium, magnesium lithium and phosphorus) and phenol. When exposed
to water these substances will cause a harmful exothermic or "heat producing" reaction burning
the patient's skin. They may also release possible hazardous byproducts into the air. Sulfuric
acid, muriatic acid and cement can all be irrigated with copious amounts of water (although a
much of the dry chemical as possible should be brushed off before irrigation with water is
initiated)
Hypovolemic shock is most likely to be caused by: correct answers Hypovolemic shock is
caused by fluid loss (e.g. bleeding or diarrhea) or third spacing of fluids. The inflammatory
response caused by a burn leads to capillary permeability resulting in the third spacing of fluids
which results in hypovolemic shock. Cervical spinal injuries contribute to neurogenic rather than
hypovolemic shock. Although an epidural hematoma causes blood loss, the epidural space is
relatively small, so blood accumulation would not be enough to result in hypovolemic shock. A
tension pneumothorax would cause obstructive shock.
The best method for assessing capillary refill on a two-week old traumatically injured neonate is
to blanch the: correct answers The circulatory system of the neonate is not well developed and
perfusion to the fingers is not complete, therefore using the tip of the finger is reserved for older
children, adolescents and adults. It is generally recommended to use the forehead, sole of the
foot, the sternum or the palm of the hand as opposed to the skin over the iliac crest or the tip of
the child's tongue
