Correct Answer: A

Rationale: The first standard step in oxygen therapy that the nurse should do is to assess the client's condition. Before initiating any oxygen treatment, it is essential to assess the client's respiratory status, oxygen saturation levels, vital signs, and overall condition. This initial assessment helps the nurse to determine the appropriate course of oxygen therapy based on the client's individual needs and current health status. Assessing the client's condition first ensures that the oxygen therapy provided is safe and effective for the specific needs of the client.

Correct Answer: D

Rationale: The Philippine Regulatory Commission - Board of Nursing (PRC-BON) has the power to regulate nursing practice in the Philippines.

Correct Answer: C

Rationale: Deep vein thrombosis (DVT) is a serious condition that requires prompt medical intervention. The presence of calf pain, swelling, and warmth in a postpartum client are concerning signs of a potential DVT. By notifying the healthcare provider immediately, appropriate diagnostic tests, such as ultrasound imaging, can be ordered to confirm the diagnosis. Timely treatment with anticoagulant medication can then be initiated to prevent complications such as pulmonary embolism. Applying warm compresses or encouraging ambulation may exacerbate the condition by promoting clot dislodgement, making immediate notification of the healthcare provider the most appropriate nursing action in this situation.

Correct Answer: C

Rationale: Pericarditis is the inflammation of the pericardium, the sac surrounding the heart. Patients with pericarditis typically present with sharp chest pain that worsens with deep breathing, changes in body position, and coughing. The pain tends to improve when the patient leans forward. This characteristic symptom of pericarditis is known as "pleuritic" chest pain. In contrast, stable angina presents as predictable chest pain that occurs with exertion and is relieved by rest or medications. Unstable angina is characterized by chest pain that occurs at rest or with minimal exertion and is considered a medical emergency. Myocarditis involves inflammation of the heart muscle and may present with symptoms such as chest pain, but it does not typically have the characteristic of worsening with deep breathing or changes in body position.

Correct Answer: A

Rationale: The incident report is the best source of factual information to investigate the fall further. Incident reports are official documents that provide a detailed account of what happened leading up to and during an incident. They include factual information such as the date, time, location, individuals involved, and details of the event. By reviewing the incident report, investigators can gather accurate information to determine the cause of the fall and any contributing factors. This document serves as an essential tool in conducting a thorough investigation into the fall and helps in identifying preventive measures to avoid similar incidents in the future.