A 48-year-old patient has been prescribed trihexyphenidyl for her Parkinson's disease. Which adverse reaction to this drug can be close-related?

Correct Answer: C

Rationale: Trihexyphenidyl is an anticholinergic medication commonly used to treat symptoms of Parkinson's disease. Anticholinergic drugs work by blocking the action of acetylcholine, a neurotransmitter in the nervous system. One common side effect of anticholinergic medications like trihexyphenidyl is dryness of the mouth (xerostomia). This occurs because the drug interferes with the normal functioning of the salivary glands, leading to reduced saliva production. Excessive salivation (choice A) is unlikely due to the drying effect of the medication. Bradycardia (choice B) is not typically associated with trihexyphenidyl use. Constipation (choice D) is another common adverse effect of anticholinergic medications, but dryness of the mouth is more closely related in this scenario.

Correct Answer: C

Rationale: Succinylcholine administration can lead to bradycardia or bradyarrhythmias in children due to its depolarizing neuromuscular blockade effects. To counteract this detrimental effect and decrease the likelihood of bradyarrhythmias, atropine sulfate is commonly used in conjunction with succinylcholine. Atropine, an anticholinergic agent, works by blocking the action of acetylcholine on muscarinic receptors, which helps prevent vagal-induced bradycardia. This approach is especially important in pediatric patients to maintain a stable heart rate and hemodynamic status during endotracheal intubation.

Correct Answer: B

Rationale: Infants typically begin to smile in response to pleasurable stimuli around 2 months of age. This social smile is an important developmental milestone in infants and signifies their growing social awareness and ability to engage with others. By the age of 2 months, infants are starting to develop social connections and recognize familiar faces, which often elicits smiles in response to positive interactions. Though some infants may start smiling earlier or later, the average age for the emergence of social smiles is around 2 months.

Correct Answer: D

Rationale: During the first 24 hours after a client is diagnosed with Addisonian crisis, it is crucial for the nurse to frequently assess the client's vital signs. Addisonian crisis is a life-threatening condition resulting from acute adrenal insufficiency. Monitoring vital signs such as blood pressure, heart rate, respiratory rate, and temperature can provide valuable information about the client's condition and response to treatment. Changes in vital signs may indicate worsening or improvement in the client's health status, helping the nurse to make timely interventions and adjustments in the client's care plan. Regular assessment of vital signs is essential in managing the client's stability and preventing complications during this critical period.

Correct Answer: B

Rationale: Positioning the patient on their side is a critical nursing action that prepares a patient for a lumbar puncture. This position is usually used during the procedure to allow easier access to the lumbar region. Placing the patient on their side helps provide better visualization of the spinal landmarks and facilitates the correct positioning of the needle for the lumbar puncture. This position also helps minimize the risk of complications and ensures the safety and comfort of the patient during the procedure. Administering enemas until clear, removing all metal jewelry, and removing the patient's dentures are not specifically associated with preparing a patient for a lumbar puncture.