Live Quiz Arena
🎁 1 Free Round Daily
⚡ Enter ArenaQuestion
← Human Body & HealthWhy does plasma osmolality sharply increase in a patient undergoing dialysis when the dialysate's sodium concentration is transiently set too high?
A)Sodium excretion increases, decreasing water retention
B)Renin secretion is suppressed, reducing sodium retention
C)Intracellular fluid shifts cause hyponatremic encephalopathy
D)Osmoreceptors trigger ADH release, increasing water reabsorption✓
💡 Explanation
Increased dialysate sodium causes a rapid rise in plasma sodium during dialysis, which triggers the osmoreceptor-ADH mechanism to conserve water at the kidneys. This happens because the body attempts to dilute the elevated plasma osmolality; therefore, ADH release increases water reabsorption rather than sodium excretion.
🏆 Up to £1,000 monthly prize pool
Ready for the live challenge? Join the next global round now.
*Terms apply. Skill-based competition.
Related Questions
Browse Human Body & Health →- Which acute outcome occurs when joint effusions limit synovial fluid lubrication?
- Why does rubbing the skin around an injury reduce pain, according to the gate control theory of pain?
- Why does excessive hyaluronic acid degradation in dermal tissue impair skin barrier function?
- An mRNA vaccine elicits a stronger antibody response after a booster shot; which mechanism explains this phenomenon involving B cells?
- If a patient with cystic fibrosis experiences excessive use of antibiotics due to recurring lung infections, which consequence becomes most likely regarding skin barrier function?
- Which mechanism explains why sperm capacitation occurs within the female reproductive tract?