A nurse is caring for a client who has nausea and is vomiting. The nurse should identify that the client is at risk for which of the following acid-base imbalances?

Choice A reason: Collecting urine from the catheter's port is not a correct action for the nurse to take, as it can introduce contamination and infection into the urinary tract. The nurse should insert a new, sterile catheter into the bladder and collect the urine directly from the catheter.

Choice B reason: Using a sterile specimen container is a correct action for the nurse to take, as it ensures that the urine sample is not contaminated by any bacteria or other substances. The nurse should label the container with the client's name, date, and time of collection and send it to the laboratory as soon as possible.

Choice C reason: Using sterile water to inflate the balloon is not a relevant action for the nurse to take, as it applies to an indwelling catheter, not a straight catheter. A straight catheter does not have a balloon and is removed after the urine is drained.

Choice D reason: Instructing the client to clean from front to back with an antiseptic solution is a good action for the nurse to take, as it helps to prevent the introduction of bacteria from the anal area into the urethra. However, it is not the best answer, as it is a general hygiene measure, not a specific action for obtaining a urine specimen.

Choice A reason: Obtaining a prescription to administer insulin is an important action for the nurse to take, as insulin helps to lower the blood glucose level and reverse the metabolic acidosis caused by diabetic ketoacidosis. However, it is not the first action the nurse should take, as the client's hypoxia is a more urgent problem that requires immediate intervention.

Choice B reason: Obtaining a prescription for supplemental oxygen is the first action the nurse should take, as hypoxia is a life-threatening condition that can lead to tissue damage, organ failure, and death. The nurse should provide oxygen therapy to improve the client's oxygen saturation and prevent further complications.

Choice C reason: Obtaining a prescription to check the client's glucose level is a necessary action for the nurse to take, as glucose monitoring helps to evaluate the client's response to insulin therapy and guide further interventions. However, it is not the first action the nurse should take, as the client's hypoxia is a more urgent problem that requires immediate intervention.

Choice D reason: Obtaining a prescription to administer intravenous fluids is a beneficial action for the nurse to take, as fluid replacement helps to correct the dehydration, electrolyte imbalance, and hypotension caused by diabetic ketoacidosis. However, it is not the first action the nurse should take, as the client's hypoxia is a more urgent problem that requires immediate intervention.