Correct Answer: B

Rationale: Vitamin K is essential for the production of several clotting factors in the liver, including factors II, VII, IX, and X. In a patient with chronic liver disease, impaired liver function can lead to decreased synthesis of these clotting factors. As a result, there is an underlying deficiency of these clotting factors, leading to prolonged PT (prothrombin time) and aPTT (activated partial thromboplastin time). The mixing studies showing correction with normal plasma further support the diagnosis of a factor deficiency rather than an inhibitor, which helps in ruling out conditions like DIC or hemophilia.

Correct Answer: A

Rationale: Zenker's diverticulum is a condition in which there is a pouch or sac that forms at the posterior pharyngeal wall above the upper esophageal sphincter. It can present with symptoms such as sensation of a foreign body stuck in the throat, difficulty swallowing (dysphagia), and odynophagia (painful swallowing). Flexible laryngoscopy can reveal a submucosal mass arising from the posterior pharyngeal wall, which is characteristic of Zenker's diverticulum.

Correct Answer: C

Rationale: The indicators listed indicate measures that Nurse Cirila can take to maintain a safe environment for her pediatric patients. However, assessing the competencies of staff before delegating a task is more related to ensuring effective delegation and appropriate task assignment rather than directly ensuring a safe environment for patients. While it is important to delegate tasks to qualified staff, this specific action does not directly contribute to maintaining a safe environment in the same manner as the other indicators listed (proper waste disposal, infection control, emergency protocols).

Correct Answer: A

Rationale: Confirmability is the criteria of trustworthiness that refers to the degree to which the findings of a study are based on the data itself and not on the biases, motivations, or interests of the researchers. In this scenario, returning to the participants to confirm the accuracy of the emerged themes is a way to ensure the confirmability of the study findings. By involving the participants in the validation process, the researchers are seeking to verify that the themes identified truly reflect the experiences of the pregnant women in labor as reported by the participants. This practice enhances the credibility and trustworthiness of the study's findings by confirming their alignment with the participants' perspectives and experiences.

Correct Answer: A

Rationale: The healthcare team should prioritize performing endoscopic hemostasis with mechanical or thermal techniques in a patient with acute gastrointestinal bleeding (GIB) requiring urgent intervention. This approach involves directly visualizing the bleeding site and applying methods such as clipping, coagulation, or band ligation to stop the bleeding. Endoscopic hemostasis is considered the gold standard for managing acute GIB as it allows for both diagnostic and therapeutic intervention in real-time, offering a targeted and effective way to control bleeding and prevent recurrent episodes. Administering proton pump inhibitors (PPIs) may help in reducing gastric acid secretion and promoting ulcer healing but is not the primary intervention for actively bleeding patients. Implementing strict bed rest may be necessary in some cases to minimize physical exertion, but it is not the primary intervention to manage acute GIB. Transfusion of fresh frozen plasma to correct coagulopathy may be necessary if