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Which diagnostic procedure would the nurse anticipate performing first if the goal was to obtain a thin 'slice' of a muscular body area?
- A. Computed tomography (CT)
- B. Magnetic resonance imaging (MRI)
- C. Positron emission tomography (PET)
- D. Single-photon emission computed tomography (SPECT)
Correct Answer: A
Rationale: A computer tomography scan uses x-rays and computer analysis to produce three-dimensional views of cross sections, or 'slices,' of the body. An MRI uses radiofrequency waves to produce images of tissue. PET scans use radioactive substances to examine metabolic activity and organ involvement. SPECT is an imaging tool that examines cerebral blood flow.
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The nurse is caring for a client who is undergoing single-photon emission computed tomography (SPECT). What is a potential side effect that this client may suffer?
- A. Headache and pain in the neck
- B. Claustrophobia
- C. Allergic reaction to the imaging material
- D. Allergic reaction to radioactive rays
Correct Answer: C
Rationale: SPECT obtains images of the brain after the client intravenously receives radiopharmaceuticals and radioisotopes approximately 1 hour before the test begins. A potential risk of SPECT is the client's allergic reaction to the imaging material. Headache is an aftereffect of a cisternal puncture, and claustrophobia is experienced by clients during a magnetic resonance imaging scan.
A nurse is working in a neurologist's office. The physician orders a Romberg test. What should the nurse instruct the client to do?
- A. Touch nose with one finger.
- B. Close eyes and stand erect.
- C. Close eyes and discriminate between dull and sharp.
- D. Close eyes and jump on one foot.
Correct Answer: B
Rationale: In the Romberg test, the client stands erect with the feet close together and eyes closed. If the client sways as if to fall, it is considered a positive Romberg test. All of the other options include components of neurologic tests, indicating neurologic deficits and balance.
A nurse is caring for a client with an injury to the central nervous system. When caring for a client with a spinal cord insult that is slowing transmission of the motor neurons, in what would the nurse anticipate a delayed reaction?
- A. Identification of information due to slowed passages of information to brain.
- B. Cognitive ability to understand relayed information.
- C. Processing information transferred from the environment.
- D. Response due to interrupted impulses from the central nervous system
Correct Answer: D
Rationale: The central nervous system is composed of the brain and the spinal cord. Motor neurons transmit impulses from the central nervous system. Slowing transmission in this area would slow the response of transmission leading to a delay in reaction. Sensory neurons transmit impulses from the environment to the central nervous system, allowing identification of a stimulus. Cognitive centers of the brain interpret the information.
The nurse is caring for a client with a significant allergy history to various medications and shellfish. Because the client needs to have a diagnostic study with contrast, which medication classification is anticipated?
- A. Bronchodilator
- B. Antihistamine
- C. Cardiotonic
- D. Antibiotic
Correct Answer: B
Rationale: Clients with an allergy history are administered a pretest dose of an antihistamine. Antihistamines block histamine receptors and reduce the manifestations of an allergic reaction. The other options are not administered in the pretest period.
The nurse is performing the physical examination of a client with a suspected neurologic disorder. In addition to assessing other parts of the body, the nurse should assess for neck rigidity. Which method should help the nurse assess for neck rigidity correctly?
- A. Moving the head toward both sides
- B. Lightly tapping the lower portion of the neck to detect sensation
- C. Moving the head and chin toward the chest
- D. Gently pressing the bones on the neck
Correct Answer: C
Rationale: The neck is examined for stiffness or abnormal position. The presence of rigidity is assessed by moving the head and chin toward the chest. The nurse should not maneuver the neck if a head or neck injury is suspected or known. The neck should also not be maneuvered if trauma to any part of the body is evident. Moving the head toward the sides or pressing the bones on the neck will not help assess for neck rigidity correctly. While assessing for neck rigidity, sensation at the neck area is not assessed.