pearljam59
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A 22-year-old woman is brought to the emergency department unconscious 30 minutes after sustaining multiple injuries in a motor vehicle collision. Her temperature is 36°C (96.8°F), pulse is 82/min, respirations are 6/min, and blood pressure is 110/75 mm Hg. Physical examination shows significant head trauma with a depressed segment of parietal bone. Arterial blood gas analysis on room air shows:
pH 7.17
PCO2 80 mm Hg
PO2 50 mm Hg
HCO3- 28 mEq/L
Which of the following renal compensatory responses will occur in this patient?
A. Decreased H+ secretion into the tubule
B. Decreased proximal tubule HCO3- reabsorption
C. Decreased titratable acid excretion
D. Increased HCO3- excretion
E. Increased NH4Cl excretion
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| skyhigh
Forum Guru
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b?
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| vanshita
Forum Guru
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b?
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| robin082006
Forum Hero
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E
This patient has respiratory acidosis therefore H+ excretion increases through NH4Cl
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| doc179
Forum Guru
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yes E is the ans. metabolic acidosis is the compensatory mechanism for respiratory acidosis and so you reabsorb more HCO3- in exchange for CL-
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| druas
Forum Elite
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yes E...resp acidosis...only thing that can compensate would be increase excretion of acid...all the rest will make it worst
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| yasmeen
Forum Guru
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yes its e hypoventilation leading 2 resp acidosis leading 2 inc nh4cl exc
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| mou
Forum Newbie
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ans is E; for any respiratory disturbances,the only compensatory mechanism is renal compensation,as it is respiratory acidosis the compensation is by excreting excess acid,to recollect for every acid ion[h+] one bicorbonate ion absorbs,causing metabolic alkalosis the h+ excreted is usually binds to ammonia forming amonium ion, or by binding to phospahte ion
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| Allison
Forum Senior
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E. Increased NH4Cl excretion
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