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Need help. Since the rate of health complications were higher than "usual" at the hospital. The plan of lowering the concentration of potassium and sodium should work.

Unless the proportion of older people increased after the IV adjustment, I don't see why the rate should maintain the same.

This only makes sense to me if the statement is comparing Kalemic Hospital to other hospitals and not Kalemic Hospital's previous records.
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Need help. Since the rate of health complications were higher than "usual" at the hospital. The plan of lowering the concentration of potassium and sodium should work.

Unless the proportion of older people increased after the IV adjustment, I don't see why the rate should maintain the same.

This only makes sense to me if the statement is comparing Kalemic Hospital to other hospitals and not Kalemic Hospital's previous records.

Yes, the argument is comparing Kalemic with other hospitals.
The question stem tells us: the rate at Kalemic was higher than usual. Government inspectors found that the typical IV solutions used at Kalemic (normally, not only now) had somewhat high concentrations...

So they are comparing Kalemic rates with other hospital rates.
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Bunuel
The rate of health complications for patients on intravenous (IV) therapy at a Kalemic Hospital was higher than usual. Government inspectors found that the typical IV solutions used at Kalemic had somewhat high concentrations of sodium and potassium, which could raise patients' blood pressure and tax their kidneys. The government inspectors mandated lowering the sodium and potassium in these IV preparations, threatening a costly government fine. Accordingly, doctors at Kalemic Hospital lowered the sodium and potassium levels in the IV solutions to the correct levels, but patients on IV therapy there continued to have a high rate of health complications.

Which of the following, if true, most helps to explain why acting on the government inspectors' recommendations failed to achieve its goal?


(A) When sodium and potassium levels in the blood fall below their baseline level, it can damage cells throughout the body by reverse osmosis.

(B) Kalemic Hospital recently implemented a new computerized diagnostic system to monitor patients’ health statistics and reveal underlying patterns.

(C) Patients receiving intravenous medications regularly are, on average, more at risk than other hospitalized patients.

(D) A high proportion of patients at Kalemic Hospital are older, and older patients are more vulnerable to infections that can accompany IVs.

(E) When high blood pressure is sustained over the course of years, it compromises several important organ systems.

The correct answer is (D)
This statement directly addresses a potential reason why health complications remained high even after the sodium and potassium levels were adjusted: older patients have a higher risk of complications from IV therapy, such as infections, regardless of the electrolyte composition of the IV solution.

(A) This option explains a potential risk of having too low levels of sodium and potassium, but it does not address why complications remained high after the levels were corrected.

(B) The implementation of a new diagnostic system does not directly explain the continued high rate of complications; it's a tool for monitoring, not a factor in the cause of the complications.

(C) While this option states that patients on IV are more at risk, it does not explain why the rate remained high after the correction of sodium and potassium levels.

(E) This option explains the long-term effects of high blood pressure but does not directly relate to the immediate issue of complications from IV therapy after the correction of electrolyte levels.
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