Which of the following is associated with an elevated potassium level in the blood?
Low blood pressure
Rapid respirations
Constipation
Cardiac irregularities
The Correct Answer is D
A. Low blood pressure is not typically associated with elevated potassium levels. While severe hyperkalemia can impact the cardiovascular system, it does not directly cause low blood pressure as a primary symptom.
B. Rapid respirations are generally associated with conditions like acidosis or respiratory distress but are not a primary consequence of elevated potassium levels.
C. Elevated potassium levels are not typically associated with constipation. In fact, hyperkalemia can cause gastrointestinal symptoms such as nausea or abdominal cramping, but constipation is more commonly linked to conditions like low potassium levels (hypokalemia).
D. Elevated potassium levels, or hyperkalemia, can cause cardiac irregularities such as arrhythmias, which can be life-threatening if not managed promptly. This is the most significant and direct effect of high potassium levels in the blood.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Cushing's syndrome is most commonly caused by the hypersecretion of cortisol from the adrenal glands. It can also result from excess production of adrenocorticotropic hormone (ACTH) from the pituitary gland, but the primary issue is often adrenal hypersecretion.
B. While the pituitary gland can contribute to Cushing's syndrome by secreting too much ACTH (which stimulates the adrenal glands), it is the adrenal glands that primarily cause the symptoms of the condition.
C. The parathyroid glands are responsible for regulating calcium levels in the blood, not for the production of cortisol.
D. The thymus plays a role in immune system development, but it is not involved in Cushing's syndrome.
Correct Answer is B
Explanation
A. Histamine does not primarily affect the respiratory rate; its main action is on blood vessels and smooth muscle.
B. Histamine is a chemical released during allergic reactions and inflammation, and one of its primary effects is vasodilation, which leads to increased blood flow to affected tissues. This can result in symptoms such as redness and swelling.
C. Histamine generally causes bronchoconstriction, not bronchodilation, which can lead to symptoms such as wheezing and difficulty breathing, especially in conditions like asthma.
D. Histamine does not directly affect heart rate, but it can influence blood pressure through its vasodilatory effects.
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