A nurse is providing discharge teaching to a client who will be receiving total parenteral nutrition (TPN) at home.
Which of the following instructions should the nurse include? (Select all that apply.)

Choice A rationale

Taking nitroglycerin when experiencing chest pain is correct as it helps to relieve the pain by dilating blood vessels and increasing blood flow to the heart.

Choice B rationale

Calling 911 if chest pain does not improve after taking nitroglycerin is correct and necessary to seek immediate medical assistance.

Choice C rationale

Storing nitroglycerin tablets in a dark, cool place is correct to maintain their potency, as light and heat can degrade the medication.

Choice D rationale

Taking up to three doses of nitroglycerin five minutes apart is correct; however, if the pain persists after one dose, the patient should call 911 immediately rather than waiting for all three doses to be taken.

The client is at risk for developing Hyponatremia due to dehydration and hypovolemia. This risk may result in Confusion.

Choice A rationale: Hypernatremia is a condition characterized by high sodium levels in the blood. It typically results from water loss exceeding sodium loss, such as in cases of inadequate water intake, excessive sweating, or osmotic diuresis. Symptoms can include thirst, irritability, confusion, and muscle twitching. However, this client's presentation of dehydration and low blood pressure is more indicative of hyponatremia rather than hypernatremia.

Choice B rationale: Hyperkalemia refers to elevated potassium levels in the blood. This condition can occur due to kidney dysfunction, excessive potassium intake, or certain medications. Symptoms of hyperkalemia include muscle weakness, fatigue, numbness, and irregular heart rhythms. While dehydration can impact electrolyte levels, the client's presentation does not specifically suggest hyperkalemia.

Choice C rationale: Hypercalcemia is a condition where calcium levels in the blood are elevated. It can result from hyperparathyroidism, certain cancers, excessive calcium or vitamin D intake, or prolonged immobilization. Symptoms include nausea, vomiting, constipation, abdominal pain, and confusion. The client's symptoms do not align with hypercalcemia, as dehydration and hypovolemia are not primary causes of elevated calcium levels.

Choice D rationale: Hyponatremia occurs when sodium levels in the blood are abnormally low. This can result from excessive fluid loss, such as through vomiting, diarrhea, sweating, or inadequate sodium intake. Symptoms include headache, nausea, vomiting, confusion, seizures, and coma. Given the client's dehydration, low blood pressure, and symptoms of weakness and dizziness, hyponatremia is the most likely risk.

Options for Response 2:

Choice A rationale: Confusion is a common symptom of hyponatremia due to the brain's response to low sodium levels, which affects neuron function and water balance within brain cells. As sodium levels fall, osmotic imbalances cause cerebral edema, leading to altered mental status, lethargy, and confusion.

Choice B rationale: Seizures can occur in severe cases of hyponatremia when the brain's neurons are significantly impacted by osmotic shifts. However, the client's symptoms do not indicate imminent seizure activity, making confusion the more appropriate choice for this scenario.

Choice C rationale: Nausea and vomiting can be symptoms of hyponatremia but are not specific enough to be the primary concern here. The client's symptoms of confusion and lethargy take precedence due to their more direct impact on overall neurological function.

Choice D rationale: Abdominal cramps can result from various electrolyte imbalances, including hyponatremia. However, this symptom is less critical compared to the neurological implications of hyponatremia, such as confusion.