Which mechanism increases peripheral vascular resistance and contributes to the development of hypertension?
None of these
Impaired sodium excretion by the kidneys
Parasympathetic system overstimulation
Reduced renin-angiotensin-aldosterone secretion
The Correct Answer is B
A. This option is incorrect because impaired sodium excretion by the kidneys does contribute to increased peripheral vascular resistance and hypertension.
B. Impaired sodium excretion by the kidneys can lead to fluid retention, which increases blood volume. This results in increased peripheral vascular resistance, a key factor in the development of hypertension.
C. Overstimulation of the parasympathetic nervous system typically causes a reduction in heart rate and vasodilation, which would generally lower blood pressure, not contribute to hypertension.
D. The renin-angiotensin-aldosterone system plays a crucial role in regulating blood pressure. Reduced secretion of renin, angiotensin, and aldosterone would not contribute to increased peripheral vascular resistance. In fact, these systems typically work to raise blood pressure when needed.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. A random blood sugar of 150 mg/dL is within an acceptable range for someone with diabetes, though it may suggest some fluctuation in blood glucose levels. It does not definitively indicate poor control of diabetes.
B. There are multiple methods to determine if diabetes is under tight control, including blood glucose monitoring and glycosylated hemoglobin (HbA1c) testing.
C. A reduced glycosylated hemoglobin level would indicate that blood glucose levels have been well-controlled over the past few months, suggesting that the patient is in tight control.
D. An elevated glycosylated hemoglobin level indicates that the patient's average blood glucose levels have been higher than recommended over the past 2-3 months, suggesting poor control of diabetes despite the patient's reported blood sugar levels. HbA1c is a key indicator of long-term glucose control.
Correct Answer is A
Explanation
A. Desmopressin (DDAVP) is the correct treatment for Diabetes insipidus. This medication is a synthetic form of vasopressin, which helps the kidneys to retain water, thereby reducing the symptoms of excessive urination and thirst in individuals with Diabetes insipidus.
B. Furosemide is a loop diuretic used to treat fluid retention, not Diabetes insipidus. It increases urine output, which would worsen the condition in patients with Diabetes insipidus.
C. Diuretics are used to increase urine output and are not used in the treatment of Diabetes insipidus, as they could exacerbate dehydration.
D. Corticosteroids are not used to treat Diabetes insipidus. They are typically used to treat inflammatory conditions, such as rheumatoid arthritis, but not Diabetes insipidus.
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