The nurse is administering Lithium to her patient. The nurse knows that Lithium is used to treat which of the following disorders?

Correct Answer: D

Rationale: Lithium is commonly used in the treatment of bipolar disorder, specifically for managing acute manic episodes and preventing future episodes of mania or depression. It helps stabilize mood and reduce the frequency and severity of mood swings in individuals with bipolar disorder. Lithium works by modulating neurotransmitter activity in the brain, particularly affecting the levels of serotonin and norepinephrine. It is not indicated for the treatment of hypertension, nausea, or thyroid disorders.

Correct Answer: D

Rationale: Lithium is commonly used in the treatment of bipolar disorder, specifically for managing acute manic episodes and preventing future episodes of mania or depression. It helps stabilize mood and reduce the frequency and severity of mood swings in individuals with bipolar disorder. Lithium works by modulating neurotransmitter activity in the brain, particularly affecting the levels of serotonin and norepinephrine. It is not indicated for the treatment of hypertension, nausea, or thyroid disorders.

Correct Answer: D

Rationale: Propranolol is a non-selective beta-blocker, which means it blocks the stimulation of both beta1 and beta2 adrenergic receptors. By blocking beta1 receptors in the heart, propranolol reduces heart rate and contractility, helping to lower blood pressure and decrease the heart's workload. Blocking beta2 receptors in the lungs may cause some constriction of the airways, so caution is required in patients with respiratory conditions.

Correct Answer: C

Rationale: Milrinone (Primacor) is a phosphodiesterase inhibitor that acts by increasing the levels of cyclic adenosine monophosphate (cAMP) in cardiac muscle cells. This leads to an increased force of cardiac contractions, which is known as a positive inotropic effect. This effect results in the heart muscle contracting more forcefully, leading to an increased cardiac output. The other options (A. Increased heart rate, B. Increased blood vessel dilation, D. Increased conduction of electrical impulses across the heart) do not directly relate to the inotropic effect of milrinone.

Correct Answer: C

Rationale: The response, "This drug is the first medication your health care provider will use to treat your angina," is accurate because Ranexa (ranolazine) is commonly used as a first-line treatment for chronic angina. It is typically prescribed when other angina medications, such as beta-blockers or calcium channel blockers, are not sufficient or well-tolerated by the patient. Ranexa works by helping the heart muscle to relax, which can improve blood flow to the heart and reduce angina symptoms. It is important for the patient to understand that Ranexa is specifically intended to treat angina and should not be used for other conditions without consulting their healthcare provider.