critical care final[information included beloe GRADED A+

1. The nurse admits a patient to the critical care unit following a motorcycle crash. Assessment findings by the nurse include blood pressure 100/50 mm Hg, heart rate 58 beats/min, respiratory rate 30 breaths/min, and t ...

1. The nurse admits a patient to the critical care unit following a motorcycle crash. Assessment findings by the nurse include blood pressure 100/50 mm Hg, heart rate 58 beats/min, respiratory rate 30 breaths/min, and temperature of 100.5°F. The patient is lethargic, responds to voice but falls asleep readily when not stimulated. Which nursing action is most important to include in this patient’s plan of care? a. Frequent neurological assessments b. Side to side position changes c. Range-of-motion to extremities d. Frequent oropharyngeal suctioning Nurses complete neurological assessments based on prescribed frequency and the severity of the patient’s condition. The newly admitted patient has an altered neurological status, so frequent neurological assessments are most important to include in the patient’s plan of care. Side to side position changes, range-of-motion exercises, and frequent oral suctioning are nursing actions that may need to be a part of the patient’s plan of care, but in the setting of increased intracranial pressure they should not be regularly performed unless indicated. 2. A patient with a head injury has an intracranial pressure (ICP) of 18 mm Hg. The blood pressure is 144/90 mm Hg, and mean arterial pressure (MAP) is 108 mm Hg. What is the cerebral perfusion pressure (CPP)? a. 54 mm Hg b. 72 mm Hg c. 90 mm Hg d. 126 mm Hg CPP = MAP – ICP. In this case, CPP = 108 mm Hg – 18 mm Hg = 90 mm Hg. All other calculated responses are incorrect. ‘ 3. While caring for a patient with a traumatic brain injury, the nurse assesses an ICP of 20 mm Hg and a CPP of 85 mm Hg. What is the best interpretation by the nurse? a. Both pressures are high. b. Both pressures are low. c. ICP is high; CPP is normal. d. ICP is high; CPP is low. The ICP is above the normal level of 0 to 15 mm Hg. The CPP is within the normal range. All other listed responses are incorrect. 4. The nurse is caring for a mechanically ventilated patient with a sustained ICP of 18 mm Hg. The nurse needs to perform an hourly neurological assessment, suction the endotracheal tube, perform oral hygiene care, and reposition the patient to the left side. What is the best action by the nurse? a. Hyperoxygenate during endotracheal suctioning. b. Elevate the patient’s head of the bed 30 degrees. c. Apply bilateral heel protectors after repositioning. d. Provide rest periods between nursing interventions. Sustained increases in ICP lasting longer than 5 minutes should be avoided. This is accomplished by spacing nursing care activities to allow for rest between activities. All other nursing actions are a part of the patient’s plan of care; however, spacing out interventions is the priority. 5. While caring for a patient with a basilar skull fracture, the nurse assesses clear drainage from the patient’s left naris. What is the best nursing action? a. Have the patient blow the nose until clear. b. Insert bilateral cotton nasal packing. c. Place a nasal drip pad under the nose. d. Suction the left nares until the drainage clears. In the presence of suspected cerebrospinal fluid leak, drainage should be unobstructed and free flowing. Small bandages may be applied to allow for fluid collection and assessment. Patients should be instructed not to blow their nose because that action may further aggravate the dural tear. Suction catheters should be inserted through the mouth rather than the nose to avoid penetrating the brain due to the dural tear. 6. The nurse is caring for a patient who was hit on the head with a hammer. The patient was unconscious at the scene briefly but is now conscious upon arrival at the emergency department with a GCS score of 15. One hour later, the nurse assesses a GCS score of 3. What is the priority nursing action? a. Stimulate the patient hourly. b. Continue to monitor the patient. c. Elevate the head of the bed. d. Notify the provider immediately. These are classic symptoms of epidural hematomas: injury, lucid period, and progressive deterioration. The provider must be notified of this neurological emergency so that appropriate interventions can be implemented. Although elevating the head of the bed, continuously monitoring the patient, and applying stimulation as necessary to assess neurological response are appropriate interventions, notification of the provider is a priority given the severity in change of neurological status. 7. The nurse is caring for a patient with an ICP of 18 mm Hg and a GCS score of 3. Following the administration of mannitol (Osmitrol), which assessment finding by the nurse requires further action? a. ICP of 10 mm Hg b. CPP of 70 mm Hg c. GCS score of 5 d. CVP of 2 mm Hg Osmotic diuretics draw water from normal brain cells, decreasing ICP and increasing CPP and urine output. An ICP of 10 mm Hg and CPP of 70 mm Hg are within normal limits. A GCS score of 5, while not optimum, indicates a slight improvement. A CVP of 2 mm Hg indicates hypovolemia. To ensure adequate cerebral perfusion, further action on the part of the nurse is necessary. 8. The nurse is caring for a mechanically ventilated patient with a brain injury. Arterial blood gas values indicate a PaCO2 of 60 mm Hg. The nurse understands this value to have which effect on cerebral blood flow? a. Altered cerebral spinal fluid production and reabsorption b. Decreased cerebral blood volume due to vessel constriction c. Increased cerebral blood volume due to vessel dilation d. No effect on cerebral blood flow (PaCO2 of 60 mm Hg is normal) Cerebral vessels dilate when PaCO2 levels increase, increasing cerebral blood volume. To compensate for increased cerebral blood volume, cerebral spinal fluid may be displaced, but the scenario is asking for the effect of hypercarbia (elevated PaCO2) on cerebral blood flow. PaCO2 of 60 mm Hg is elevated, which would cause cerebral vasodilation and increased cerebral blood volume. 9. The nurse assesses a patient with a skull fracture to have a Glasgow Coma Scale score of 3. Additional vital signs assessed by the nurse include blood pressure 100/70 mm Hg, heart rate 55 beats/min, respiratory rate 10 breaths/min, oxygen saturation (SpO2) 94% on oxygen at 3 L per nasal cannula. What is the priority nursing action? a. Monitor the patient’s airway patency. b. Elevate the head of the patient’s bed. c. Increase supplemental oxygen delivery. d. Support bony prominences with padding. A GCS score of 3 is indicative of a deep coma. Given the assessed respiratory rate of 10 breaths/min combined with the GSC score of 3, the nurse must focus on maintaining the patient’s airway. There is no evidence to support the need for increased supplemental oxygen. A respiratory rate of 10 breaths/min may result in increased CO2 retention, which may further increase ICP through dilatation of cerebral vessels. Elevating the head of the bed and supporting bony prominences are appropriate nursing interventions for a patient in a deep coma; however, airway patency is the immediate priority.