A nurse is reviewing the laboratory test results from a client who has prerenal acute kidney injury (AKI). Which of the following electrolyte imbalances should the nurse expect?

Choice A rationale
In prerenal AKI, the kidneys are not receiving enough blood flow. As a result, they cannot filter potassium out of the blood efficiently, leading to hyperkalemia, which is an elevated level of potassium in the blood. This condition is dangerous because it can cause cardiac dysrhythmias and muscle weakness.

Choice B rationale
Hypernatremia, an elevated sodium level, is not typically associated with prerenal AKI. It is more commonly related to dehydration or an excessive intake of sodium, which are not direct consequences of prerenal AKI.

Choice C rationale
Hypercalcemia, an elevated calcium level, is also not a common finding in prerenal AKI. It is usually associated with other conditions such as hyperparathyroidism or malignancy.

Choice D rationale
Hypophosphatemia, a low level of phosphate in the blood, is not a typical result of prerenal AKI. It can occur due to malnutrition or malabsorption, but it is not directly caused by prerenal AKI.

Choice A rationale
This method is the standard procedure for obtaining a clean-catch midstream urine specimen. The initial voiding washes away organisms near the meatus, and the midstream urine is less likely to be contaminated by bacteria from the skin or urethral area, providing a sample that more accurately represents the bacteria in the bladder.

Choice B rationale
Having the patient empty the bladder completely and then obtaining the next specimen does not ensure a clean-catch sample. This method could lead to contamination of the specimen with bacteria from the skin or urethral area.

Choice C rationale
Cleaning the area with povidone-iodine is not recommended for routine urine culture as it may kill some of the bacteria, leading to a false-negative result. The standard practice is to clean the area with mild soap and water.

Choice D rationale
Inserting a catheter is an invasive procedure and is not the first choice for obtaining a urine specimen. It is used when a patient is unable to provide a clean-catch specimen or if there are specific medical indications.