Correct Answer: B

Rationale: In the case of lung cancer that has metastasized to the bones and liver, lymphatic circulation is a key mechanism by which cancer cells spread from the primary tumor site to distant organs. Cancer cells can invade nearby lymphatic vessels and travel through the lymphatic system, eventually reaching lymph nodes and spreading to other tissues and organs. This route is significant in the metastasis of many types of cancer, including lung cancer.

Correct Answer: B

Rationale: Administering anticoagulant therapy is crucial to prevent thromboembolic events in patients with ET.

Correct Answer: B

Rationale: Because of patients risks of hemorrhage, patients with MDS should be taught techniques for managing emergent bleeding episodes.

Correct Answer: B

Rationale: Ondansetron can prolong the QT interval, making cardiac monitoring essential in this scenario.

Correct Answer: D

Rationale: After a total gastrectomy, where the entire stomach is removed, patients can experience dumping syndrome due to the rapid passage of food into the small intestine. This condition can lead to symptoms such as nausea, vomiting, diarrhea, and abdominal cramps. Lying flat after meals can help slow down the movement of food into the intestines, reducing the risk of dumping syndrome. It's important for patients to follow dietary recommendations and positioning strategies to manage symptoms effectively.