A nurse applies a painful stimulus to the nailbeds of an unconscious patient. The patient responds with extension of the arms and legs, pronation of the arms, and plantar flexion. The nurse documents this as:
Decorticate posturing
Flexion withdrawal
Localization of pain
Decerebrate posturing
The Correct Answer is D
Choice A reason:
Decorticate posturing involves abnormal flexion of the arms towards the chest and extension of the legs. This posture indicates damage to the corticospinal tract at the level of the diencephalon. The described response does not match decorticate posturing.
Choice B reason:
Flexion withdrawal is a response to painful stimuli where the patient pulls away or flexes the affected limb. This is a less severe response than posturing and does not match the description provided in the scenario.
Choice C reason:
Localization of pain refers to the patient's ability to purposefully move a hand to the site of a painful stimulus, indicating higher brain function. The described response of arm and leg extension with pronation does not fit this description.
Choice D reason:
Decerebrate posturing is characterized by extension of the arms and legs, pronation of the arms, and plantar flexion. This posture indicates severe brainstem damage and is consistent with the described response.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A reason:
Providing small doses of opioid analgesia is important for pain management, but it is not the highest priority in a patient with a closed head injury on mechanical ventilation. Pain control should be balanced with the need to monitor neurological status.
Choice B reason:
Maintaining pCO2 of 35-45 is critical for patients with a closed head injury on mechanical ventilation. Proper pCO2 levels help manage intracranial pressure (ICP) and prevent secondary brain injury. Hyperventilation to lower pCO2 can reduce ICP but must be carefully controlled to avoid cerebral ischemia.
Choice C reason:
Administering an anti-anxiety agent can help manage agitation and anxiety, but it is not the highest priority. Sedation must be used cautiously in head injury patients to avoid masking changes in neurological status.
Choice D reason:
Monitoring blood pressure every four hours is necessary for overall patient care, but continuous monitoring and immediate interventions are more critical in managing intracranial pressure and preventing secondary brain injury.
Correct Answer is A
Explanation
Choice A reason:
The patient coughing is the most likely cause of the high pressure alarm on a mechanical ventilator. Coughing can increase airway resistance and pressure, triggering the alarm. This is a common occurrence and should be addressed by assessing the patient's need for suctioning or other interventions to relieve the cough.
Choice B reason:
An endotracheal tube (ETT) cuff leak would typically cause a low pressure alarm, not a high pressure alarm. A cuff leak results in a loss of pressure within the ventilator circuit, leading to insufficient ventilation and a different alarm response.
Choice C reason:
If the ventilator tubing becomes disconnected, it would result in a low pressure alarm due to the loss of circuit integrity. A disconnection is a serious issue that needs immediate correction but does not cause high pressure alarms.
Choice D reason:
The patient's complaint of a headache does not directly relate to a high pressure alarm on the ventilator. While patient discomfort should always be addressed, it is not the most likely cause of the alarm in this scenario.
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