An 83-year old client diagnosed with COPD has been receiving 1L of oxygen via nasal cannula. When the relatives visited, the sister of the client increased the oxygen to 7L per minute because she says that the client "looks like he is having difficulty getting air." What should the nurse's initial action be?

Correct Answer: C

Rationale: Increasing the oxygen flow rate from 1L to 7L per minute without a healthcare provider's order is not safe for the client. High-flow oxygen can lead to oxygen toxicity, absorption atelectasis, and can reduce the respiratory drive in patients with COPD. The nurse's initial action should be to notify the physician about the change in oxygen delivery and the client's condition. The physician should reevaluate the client's oxygen requirements and provide appropriate orders based on the clinical assessment. It is crucial to follow evidence-based guidelines and healthcare provider orders for oxygen administration to ensure patient safety and optimal outcomes.

Correct Answer: D

Rationale: Involvement of two lymph node regions above the diaphragm with systemic symptoms corresponds to stage IIB.

Correct Answer: B

Rationale: Type 2 diabetes mellitus (DM) most likely results from heterogeneous risk factors, such as obesity, unhealthy diet, sedentary lifestyle, genetic predisposition, and other lifestyle factors. By addressing these risk factors through lifestyle modifications, such as maintaining a healthy diet and regular exercise, the development of Type 2 DM can often be prevented or delayed. On the other hand, Type 1 diabetes is primarily an autoimmune condition where the body mistakenly attacks insulin-producing cells in the pancreas, and it is not preventable. Gestational diabetes occurs during pregnancy and is influenced by hormonal changes during pregnancy and other factors, making it less preventable through lifestyle changes alone. Thus, Type 2 diabetes is the type that is most preventable through lifestyle modifications.

Correct Answer: C

Rationale: Toddlers typically engage in parallel play rather than cooperative play.

Correct Answer: C

Rationale: Encouraging the breastfeeding mother to adhere to a low-phenylalanine diet is an important nursing consideration in the care of the newborn with PKU. Phenylketonuria (PKU) is an inborn error of metabolism in which the body cannot metabolize phenylalanine properly. If a newborn with PKU consumes formula or breast milk that contains high levels of phenylalanine, it can lead to severe intellectual disability and other health complications. By encouraging the breastfeeding mother to follow a low-phenylalanine diet, the newborn's exposure to phenylalanine can be minimized, helping to prevent the negative effects of PKU.