6.2e Urinary

Question 1

Renal Function

Answer 1

• High steroid levels increase renal function during pregnancy
• Reduced steroid levels decrease renal function after birth
• Renal function returns to normal after 8 weeks
• Pregnancy induced glycosuria decreases in a week
• Lactosuria normal in lactating patients
• Creatinine normal in 6 weeks
• Ketonuria normal or after prolonged labor with dehydration

Question 2

Fluid Loss

Answer 2

• Diuresis caused by lowered estrogen removes excess fluid retained during pregnancy
• 3000mL+ urine output during first 1-3 days

Question 3

Urethra/Bladder

Answer 3

• Birth trauma, increased bladder capacity after birth, and anesthesia decrease urge to void
• Pelvic soreness also decreases need to void
• Decreased voiding and diuresis cause bladder distension
• Excessive bleeding can result from distended bladder and is also susceptible to infection
• Bladder tone restored in 5-7 days
• Stress incontinence is likely to happen after vaginal birth caused by trauma to pelvic floor