Correct Answer: C

Rationale: In an obstetrical emergency, the immediate priority after the baby delivers is to clear the baby's airway by suctioning the mouth and nose to ensure effective breathing. This action helps prevent potential complications like meconium aspiration. Cutting the umbilical cord, wrapping the baby in a blanket, or placing extra padding under the mother can follow once the baby's airway is clear. Therefore, suctioning the baby's mouth and nose is the most critical and time-sensitive intervention in this scenario. Placing extra padding under the mother is not the immediate priority as ensuring the baby's airway is clear. Cutting the umbilical cord and wrapping the baby in a clean blanket are important but can wait until after ensuring the baby's breathing is not compromised.

Correct Answer: A

Rationale: In an emergency situation, assessing the client's ability to speak is crucial in determining airway obstruction. If a client can speak, it indicates that the airway is patent and not completely obstructed. Choices B and C, assessing the ability to hear and oxygen saturation, are not directly indicative of an airway obstruction. Choice D, adventitious breath sounds, may be present in conditions like asthma or pneumonia but are not specific to determining an airway obstruction.

Correct Answer: D

Rationale: All of the provided choices are antiviral drug classes used in the treatment of HIV/AIDS. Nucleoside reverse transcriptase inhibitors, such as tenofovir and emtricitabine, work by interfering with the virus's ability to replicate. Protease inhibitors, like atazanavir and darunavir, block an enzyme that HIV needs to make copies of itself. HIV fusion inhibitors, for instance, enfuvirtide, prevent HIV from entering human cells. Therefore, 'all of the above' is the correct answer as all the listed drug classes are commonly used in managing HIV infections. Choices A, B, and C are all essential components of antiretroviral therapy for HIV, targeting different stages of the virus's life cycle. The combination of drugs from these classes is often recommended to effectively control HIV replication and reduce viral load.

Correct Answer: C

Rationale: When a pleural drainage system is cracked, the nurse's initial action should be to change the drainage system. This is essential to prevent potential complications like air leaks or infections. While observing the client's response and checking for leaks are important steps, they are secondary to addressing the immediate issue of the cracked system. Notifying the physician, though necessary, can be carried out once the primary concern of the damaged system is resolved.

Correct Answer: C

Rationale: The correct answer is C: bilirubin. A high bilirubin level is found in newborns with hepatic immaturity, leading to jaundice. Testing bilirubin levels is crucial in diagnosing and monitoring jaundice in newborns. Choices A, B, and D (blood urea nitrogen, magnesium, and prolactin) are not commonly performed tests for evaluating jaundice in newborns. Blood urea nitrogen is a measure of kidney function, magnesium levels are usually checked in metabolic disorders, and prolactin is a hormone related to lactation, none of which are directly relevant to assessing jaundice in newborns.