A nurse who is mentoring a graduate nurse explains the correlation between severe blood loss and the effect on the client's mean arterial pressure (MAI The graduate nurse demonstrates correct understanding when he states which of the following:
It raises cardiac output and MAP.
It causes vasoconstriction and increased MAP.
There is no direct correlation to MAP.
Lower blood volume lowers MAP.
The Correct Answer is D
A. Severe blood loss actually decreases blood volume, which leads to decreased cardiac output and ultimately lower MAP.
B. While it's true that the body initially responds to blood loss by vasoconstricting to maintain blood pressure, this compensatory mechanism can only last for so long. As blood loss continues, MAP will decrease.
C. There is no direct correlation to MAP. MAP is directly influenced by cardiac output and systemic vascular resistance (SVR). Blood volume is a major determinant of both.
D. A decrease in blood volume leads to decreased preload, which reduces cardiac output. This, in turn, lowers MAP.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Sedatives would further depress the respiratory muscles, worsening the myasthenic crisis.
B. Instruct the client to perform pursed lip breathing can be helpful for managing dyspnea in other conditions. However, it's not the priority in a myasthenic crisis where respiratory muscles are rapidly weakening.
C. As respiratory muscles weaken in a myasthenic crisis, the patient is at risk for respiratory failure. Preparing for mechanical ventilation is crucial.
D. A vasoconstrictor is used to treat shock, not a myasthenic crisis.
Correct Answer is ["B","C","D","E"]
Explanation
A. Bradycardia is not a typical symptom of meningitis. Instead, meningitis is more likely to cause tachycardia (increased heart rate) as part of the body's response to fever and infection. Bradycardia would not be an expected sign in this context.
B. Fever and chills are common symptoms of meningitis. The infection and inflammation associated with meningitis can cause an elevated body temperature as the body responds to the infection.
C. Nuchal rigidity is a classic sign of meningitis. The inflammation of the meninges causes muscle stiffness and discomfort when trying to bend the neck forward, which is a common finding in this condition.
D. Severe headache is a common symptom of meningitis. The inflammation and irritation of the meninges often result in intense and persistent headaches, which can be one of the primary complaints of patients with meningitis.
E. Brudzinski's sign is a classic clinical sign of meningitis. It indicates meningeal irritation and is often assessed along with other signs to help diagnose meningitis.
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