Correct Answer: C

Rationale: The nurse should prioritize checking the patency of the NG tube by aspirating gastric contents before initiating tube feeding. This is important to ensure that the NG tube is in the correct position and that it is functioning properly. By aspirating gastric contents, the nurse can confirm that the tube is in the stomach and not in the lungs or surrounding tissues. If no gastric contents are obtained upon aspiration, it may indicate that the tube is not properly placed or may be occluded, which would require further assessment and intervention before proceeding with tube feeding. Checking the patency of the NG tube is a crucial step in ensuring the safety and effectiveness of enteral nutrition delivery.

Correct Answer: A

Rationale: Having a tracheostomy means that a patient has an artificial opening in their neck to help them breathe. Therefore, any issues related to breathing, such as blockages in the tracheostomy tube or difficulty in clearing secretions, can pose a major problem for a patient with a tracheostomy. It is crucial to monitor the patient's respiratory status closely and intervene promptly if any breathing difficulties arise to prevent potential respiratory distress or complications.

Correct Answer: D

Rationale: Cor pulmonale is a condition characterized by right heart failure secondary to pulmonary hypertension, which is often caused by chronic hypoxemia. Chronic hypoxemia occurs in conditions such as chronic obstructive pulmonary disease (COPD) where there is limited airflow in and out of the lungs, leading to low oxygen levels in the blood. However, the specific characteristic of pulmonary hypertension leading to right heart failure distinguishes cor pulmonale from COPD. Other conditions like idiopathic pulmonary fibrosis (IPF) and pulmonary embolism (PE) may also lead to hypoxemia but are not primarily associated with pulmonary hypertension and right heart failure as in cor pulmonale.

Correct Answer: C

Rationale: The nurse should prioritize checking the patency of the NG tube by aspirating gastric contents before initiating tube feeding. This is important to ensure that the NG tube is in the correct position and that it is functioning properly. By aspirating gastric contents, the nurse can confirm that the tube is in the stomach and not in the lungs or surrounding tissues. If no gastric contents are obtained upon aspiration, it may indicate that the tube is not properly placed or may be occluded, which would require further assessment and intervention before proceeding with tube feeding. Checking the patency of the NG tube is a crucial step in ensuring the safety and effectiveness of enteral nutrition delivery.

Correct Answer: C

Rationale: A dental abscess is a condition characterized by inflammation and infection of the soft tissues surrounding the apex of a tooth root. This infection can result from untreated dental decay, trauma to the tooth, or periodontal disease. The abscess can cause pain, swelling, redness, and even pus formation. Treatment typically involves draining the abscess, removing the source of infection, and possibly prescribing antibiotics to address the infection. If left untreated, a dental abscess can lead to serious complications and spread to other parts of the body.