Correct Answer: C

Rationale: Prolonged labor is a condition in which labor lasts for an extended period, typically more than 20 hours for first-time mothers and more than 14 hours for experienced mothers. Prolonged labor can contribute to slowing down uterine involution because the prolonged pressure and strain on the uterus can affect its ability to return to its pre-pregnancy size and position. The prolonged contractions and stretching of the uterine muscles can hinder the normal process of uterine involution, leading to a delay in the uterus shrinking back to its non-pregnant state. Additionally, prolonged labor can increase the risk of postpartum complications such as excessive bleeding and infection, which can further impact uterine involution. Therefore, it is crucial for healthcare providers to monitor labor progress closely to prevent prolonged labor and its potential effects on uterine involution.

Correct Answer: C

Rationale: The diagnosis of contact latex allergy is primarily based on the patient's history of exposure to latex-containing products and the development of symptoms upon contact with latex. To confirm the diagnosis, skin patch testing is performed. Skin patch testing exposes the skin to small amounts of latex allergens to observe for any localized allergic reaction, such as redness, swelling, or itchiness. This test helps determine if the individual has developed a delayed-type hypersensitivity reaction to latex. Latex-specific IgE testing (choice A) and finding IgE in serum (choice B) are methods used in diagnosing immediate-type latex allergy but are not sufficient for confirming contact latex allergy specifically. ELISA (choice D) is a type of laboratory technique used for various purposes, including measuring the levels of specific substances in the blood, but it is not typically used as a diagnostic tool for contact latex allergy.

Correct Answer: A

Rationale: When a patient is prescribed with an angiotensin-converting enzyme (ACE) inhibitor for managing hypertension, the nurse should monitor closely for signs of hyperkalemia. ACE inhibitors can affect the renin-angiotensin-aldosterone system, leading to decreased aldosterone secretion and impaired potassium excretion by the kidneys. As a result, potassium levels in the blood may increase, leading to hyperkalemia.

Correct Answer: B

Rationale: Albuterol, also known as salbutamol, is a beta-adrenergic agonist medication commonly used for the treatment of conditions such as asthma and COPD. As a beta-adrenergic agonist, albuterol binds to beta-2 adrenergic receptors in the lungs, causing bronchodilation, which helps to relieve bronchospasms and improve airflow to the lungs. This action leads to the relaxation of smooth muscle in the airways, thus making breathing easier for patients with COPD or asthma. Anticholinergics, corticosteroids, and methylxanthines have different mechanisms of action and are not directly related to the pharmacological action of albuterol in COPD treatment.

Correct Answer: B

Rationale: Radiologic procedures are typically not used as the least screening assessment by nurses in a perinatal unit. The nurse's initial screening assessments usually focus on gathering information through techniques such as physical examination, interviews, and reviewing laboratory results. Radiologic procedures, such as X-rays or CT scans, are usually ordered by physicians once a more specific diagnostic need has been identified, based on the initial screening assessments performed by the nurse. Therefore, in this scenario, the least screening assessment to be used by the nurse would be radiologic procedures.