A nurse is completing a medication history for a client who reports using over-the-counter calcium carbonate antacid. Which of the following recommendations should the nurse make about taking this medication?

Choice A reason: 3% sodium chloride is a hypertonic solution that can cause fluid shifts and dehydration. It is not a suitable replacement for TPN, which is also hypertonic but provides calories, electrolytes, vitamins, and minerals. Infusing 3% sodium chloride can lead to hypernatremia, increased intracranial pressure, and cellular damage.

Choice B reason: Dextrose 10% in water is a hypertonic solution that can provide some calories and prevent hypoglycemia. It is the best option among the choices to replace TPN temporarily, until the new container arrives. However, it does not provide adequate nutrition or electrolytes, so it should not be used for a long time.

Choice C reason: Lactated Ringer's is an isotonic solution that can maintain fluid balance and electrolytes. It is not a suitable replacement for TPN, which is hypertonic and provides more calories and nutrients. Infusing Lactated Ringer's can lead to fluid overload, hyponatremia, and metabolic alkalosis.

Choice D reason: 0.9% sodium chloride is an isotonic solution that can maintain fluid balance and sodium levels. It is not a suitable replacement for TPN, which is hypertonic and provides more calories and nutrients. Infusing 0.9% sodium chloride can lead to fluid overload, hyponatremia, and metabolic acidosis.

Choice A reason: Monoamine oxidase inhibitors (MAOIs) are not the correct class of medications to which escitalopram (Lexapro) belongs. MAOIs are a group of antidepressants that work by inhibiting the enzyme monoamine oxidase, which breaks down neurotransmitters such as serotonin, norepinephrine, and dopamine. MAOIs can increase the levels of these neurotransmitters in the brain and improve mood and energy. However, MAOIs can also cause serious side effects and interactions with other drugs and foods, and they are not commonly used as firstline treatment for depression. Escitalopram is not an MAOI, and it should not be taken with MAOIs or within 14 days of stopping or starting MAOIs, as this can cause a dangerous drug interaction called serotonin syndrome.

Choice B reason: Betablockers are not the correct class of medications to which escitalopram (Lexapro) belongs. Betablockers are a group of drugs that work by blocking the beta receptors on the heart and blood vessels, which are stimulated by adrenaline and noradrenaline. Betablockers can lower the heart rate, blood pressure, and cardiac output, and they are used to treat conditions such as hypertension, angina, arrhythmias, and heart failure. Betablockers can also reduce anxiety and tremors, but they are not antidepressants and they do not affect serotonin levels. Escitalopram is not a betablocker, and it does not have any significant effect on the cardiovascular system.

Choice C reason: Benzodiazepines are not the correct class of medications to which escitalopram (Lexapro) belongs. Benzodiazepines are a group of drugs that work by enhancing the activity of the neurotransmitter gammaaminobutyric acid (GABA), which has a calming and sedating effect on the brain. Benzodiazepines are used to treat anxiety, insomnia, seizures, and muscle spasms, and they can also cause relaxation, drowsiness, and amnesia. Benzodiazepines are not antidepressants and they do not affect serotonin levels. Escitalopram is not a benzodiazepine, and it does not have any significant effect on GABA receptors .

Choice D reason: Selective serotonin reuptake inhibitors (SSRIs) are the correct class of medications to which escitalopram (Lexapro) belongs. SSRIs are a group of antidepressants that work by blocking the reuptake of serotonin by the nerve cells, which increases the availability of serotonin in the synaptic cleft. Serotonin is a neurotransmitter that regulates mood, appetite, sleep, and cognition, and low levels of serotonin are associated with depression and anxiety. SSRIs can improve the symptoms of depression and anxiety by enhancing the serotonin signaling in the brain. Escitalopram is an SSRI, and it is used to treat major depressive disorder and generalized anxiety disorder.