Correct Answer: C

Rationale: The correct answer is C: Chicken liver. Chicken liver is the best source of heme iron, which is more easily absorbed by the body compared to non-heme iron found in plant-based foods like spinach or oranges. Eggs do contain iron, but in smaller amounts compared to chicken liver. Oranges, on the other hand, are a source of vitamin C which can enhance iron absorption but do not contain significant amounts of iron themselves.

Correct Answer: C

Rationale: The correct answer is C because observing the patient and inferring health or dysfunction allows the nurse to assess mental health holistically. This method considers various factors such as behavior, emotions, communication, and overall functioning. It provides a comprehensive view of the patient's mental well-being. A: Examining the patient's electroencephalogram is more related to brain activity rather than mental health assessment. B: Observing the patient as he or she performs an IQ test is limited to cognitive abilities and does not capture the full spectrum of mental health. D: Examining the patient's response to a specific set of questions may not provide a complete picture of mental health as it focuses on specific aspects rather than overall assessment.

Correct Answer: B

Rationale: The correct answer is B: Swelling in the legs and shortness of breath. In heart failure, fluid can build up in the body causing swelling, particularly in the legs. Shortness of breath is a common symptom due to fluid accumulation in the lungs. Increased urine output and weight loss (A) are not indicative of worsening heart failure as they suggest fluid loss. Decreased blood pressure and dizziness (C) can be seen in other conditions like dehydration. Fatigue and constipation (D) are not specific signs of heart failure worsening.

Correct Answer: B

Rationale: The correct answer is B: Serum albumin levels. Serum albumin is a protein produced by the liver and is a key indicator of a patient's nutritional status. Low levels of serum albumin indicate malnutrition or protein deficiency. Monitoring serum albumin levels provides an objective measure of the patient's overall nutritional status. Choice A (Patient's weight) can be influenced by factors other than nutrition, such as fluid retention or muscle mass. Choice C (Patient's food preferences) does not provide direct information on the patient's actual nutritional intake. Choice D (Number of meals consumed per day) does not account for the quality or quantity of nutrients consumed in those meals.

Correct Answer: A

Rationale: The correct answer is A: Assess the patient's emotional state and provide reassurance. The first priority is to address the patient's anxiety and worry, as this can impact their overall well-being and ability to cope with the upcoming surgery. By assessing the emotional state, the nurse can understand the patient's concerns and provide appropriate support and reassurance. Discussing the risks and benefits (choice B) may be important but not the immediate priority. Encouraging relaxation (choice C) may not address the underlying anxiety. Calling the surgeon (choice D) is not necessary at this point as the nurse should first focus on the patient's emotional needs.