The nurse evaluates the effects of warfarin by monitoring what lab test?

Choice A rationale

Parkinson's disease is characterized by an imbalance of dopamine and acetylcholine, primarily due to the degeneration of dopamine-producing neurons in the substantia nigra. This imbalance results in the characteristic motor symptoms of Parkinson's disease, such as tremors, rigidity, and bradykinesia.

Choice B rationale

Parkinson's disease involves decreased dopamine production, not increased. The disease is caused by the progressive loss of dopamine-producing neurons in the brain, leading to reduced dopamine levels and an imbalance with acetylcholine.

Choice C rationale

Alzheimer's disease is not primarily characterized by a decrease in dopamine. Instead, it involves the degeneration of cholinergic neurons and a deficiency in acetylcholine, which is crucial for memory and cognitive functions.

Choice D rationale

Alzheimer's disease is associated with a deficiency of acetylcholine rather than an excess. The disease is also characterized by the presence of neuritic plaques and neurofibrillary tangles in the brain, which contribute to cognitive decline.

Choice A rationale

Treatment of narcotic dependence involves using a narcotics antagonist to block the effects of narcotics. This helps prevent relapse in patients recovering from narcotic addiction by decreasing cravings and withdrawal symptoms.

Choice B rationale

Treatment of alcohol dependence does not typically involve narcotics antagonists. Instead, medications like disulfiram or naltrexone are used to manage alcohol dependence.

Choice C rationale

Reversal of tachycardia is not an indication for a narcotics antagonist. Tachycardia is usually managed with medications like beta-blockers or calcium channel blockers.

Choice D rationale

Reversal of bronchoconstriction is not an indicator for narcotics antagonists. Bronchoconstriction is usually treated with bronchodilators such as albuterol or ipratropium.