A client is hospitalized for observation after suffering heat exhaustion during a marathon race. He complains of dizziness when he stands up, and the RN determines that he has postural hypotension. Based on the information, which of the following electrolyte imbalances could cause the client's symptoms?

Choice A reason: I try to walk in the hallway each day with assistance is a correct statement. Walking is a form of physical activity that can stimulate bowel movements and prevent constipation. Walking also has other benefits such as improving circulation, muscle strength, and mood. The patient should be encouraged to walk as much as possible with assistance to prevent falls and injuries.

Choice B reason: I need to increase fiber in my diet and drink more water is a correct statement. Fiber is a type of carbohydrate that is not digested by the body and helps to form soft and bulky stools. Fiber can be found in foods such as fruits, vegetables, whole grains, nuts, and seeds. Water is essential for hydration and helps to soften the stools and ease their passage. The patient should be advised to consume at least 25 grams of fiber and 8 glasses of water per day to prevent constipation.

Choice C reason: I take my laxative every morning and an enema every night is an incorrect statement that requires follow-up teaching by the nurse. Laxatives and enemas are medications that are used to treat constipation by stimulating or lubricating the bowel. However, they should not be used routinely or excessively, as they can cause side effects such as dehydration, electrolyte imbalance, abdominal cramps, diarrhea, or dependence. The patient should be instructed to use laxatives and enemas only as prescribed by the doctor and for a short period of time. The patient should also be informed of the potential risks and complications of overusing laxatives and enemas.

Choice D reason: The pain medication I take tends to make my constipation worse is a correct statement. Pain medications, especially opioids, can slow down the movement of the bowel and cause constipation. This is a common and expected side effect of pain medications. The patient should be educated on how to manage constipation caused by pain medications, such as increasing fiber and water intake, exercising regularly, and using stool softeners or laxatives as needed. The patient should also be reassured that constipation does not mean that the pain medication is not working or that they are addicted to it.

Choice A reason: Assessment is the first and most important phase of the nursing process, as it involves collecting and analyzing data about the patient's health status, needs, and preferences. The nurse should have assessed the patient's blood pressure before administering the antihypertensive medication, as it could have been contraindicated or required a dosage adjustment. By failing to do so, the nurse put the patient at risk of hypotension and its complications.

Choice B reason: Planning is the second phase of the nursing process, in which the nurse sets goals and outcomes for the patient's care and selects appropriate interventions. The nurse did not make an error in this phase, as the administration of the antihypertensive medication was part of the plan of care for the patient with hypertension.

Choice C reason: Diagnosis is the third phase of the nursing process, in which the nurse identifies the patient's actual or potential health problems based on the assessment data. The nurse did not make an error in this phase, as the diagnosis of hypertension was accurate and supported by the patient's history and vital signs.

Choice D reason: Evaluation is the fourth and final phase of the nursing process, in which the nurse measures the patient's progress and outcomes and modifies the plan of care as needed. The nurse did not make an error in this phase, as the re-checking of the blood pressure and the recognition of the patient's symptoms were part of the evaluation process. However, the nurse should have also notified the provider and implemented interventions to treat the hypotension.