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Renal Changes in pregnancy
Renal Changes in pregnancy ( 4 Questions)
A nurse is teaching a pregnant client about the renal changes that occur during pregnancy.
The nurse explains that the amount of urine produced per day increases by 25% to 50% during pregnancy due to:.
increased renal blood flow and increased glomerular permeability are not the main causes of increased urine production during pregnancy. Increased glomerular permeability may occur in some pathological conditions, such as preeclampsia, but not in normal pregnancy.
Dncreased glomerular filtration rate and decreased tubular reabsorption are not the main causes of increased urine production during pregnancy. Increased glomerular filtration rate is a consequence of decreased renal vascular resistance and increased plasma volume, not a cause. Decreased tubular reabsorption may occur in some pathological conditions, such as gestational diabetes, but not in normal pregnancy.
This is because pregnancy leads to physiologic changes in renal and systemic hemodynamics that cause important alterations in acid-base, electrolyte, and kidney function. One of these changes is a decrease in renal vascular resistance due to hormonal and mechanical factors, which results in increased renal blood flow and glomerular filtration rate. Another change is an increase in plasma volume by 30% to 50% due to increased aldosterone and vasopressin secretion.
Decreased serum osmolality and increased renal clearance are not the main causes of increased urine production during pregnancy. Decreased serum osmolality is a consequence of increased plasma volume and decreased thirst threshold, not a cause.
This is because pregnancy leads to physiologic changes in renal and systemic hemodynamics that cause important alterations in acid-base, electrolyte, and kidney function. One of these changes is a decrease in renal vascular resistance due to hormonal and mechanical factors, which results in increased renal blood flow and glomerular filtration rate. Another change is an increase in plasma volume by 30% to 50% due to increased aldosterone and vasopressin secretion.
Choice A is wrong because increased renal blood flow and increased glomerular permeability are not the main causes of increased urine production during pregnancy. Increased glomerular permeability may occur in some pathological conditions, such as preeclampsia, but not in normal pregnancy.
Choice B is wrong because increased glomerular filtration rate and decreased tubular reabsorption are not the main causes of increased urine production during pregnancy. Increased glomerular filtration rate is a consequence of decreased renal vascular resistance and increased plasma volume, not a cause. Decreased tubular reabsorption may occur in some pathological conditions, such as gestational diabetes, but not in normal pregnancy.
Choice D is wrong because decreased serum osmolality and increased renal clearance are not the main causes of increased urine production during pregnancy. Decreased serum osmolality is a consequence of increased plasma volume and decreased thirst threshold, not a cause.
Increased renal clearance may occur in some pathological conditions, such as urinary tract infection, but not in normal pregnancy