Correct Answer: A

Rationale: The correct answer is A: Quadriceps setting exercises. These exercises help prevent complications by strengthening the quadriceps muscles, which are crucial for knee stability and joint support post-surgery. They also aid in preventing muscle atrophy and promoting blood circulation. Leg lifts with weights (B) may strain the knee joint, leading to complications. Isometric muscle contractions (C) involve static muscle contractions and do not provide the necessary range of motion needed post-knee surgery. Active range-of-motion exercises (D) may be beneficial but should be performed after quadriceps setting exercises to avoid unnecessary strain on the knee joint.

Correct Answer: A

Rationale: The correct answer is A. In CKD, limiting potassium and phosphorus intake is crucial to prevent electrolyte imbalances and further kidney damage. Excessive protein intake can worsen kidney function, so the patient should not eat as much protein as they want. Increasing fluid intake is beneficial for hydration, but sodas are not recommended due to their high sugar and phosphorus content, which can be harmful for CKD patients. Therefore, option A is the best choice for proper understanding of dietary changes in CKD.

Correct Answer: A

Rationale: The correct answer is A: Jaundice. In chronic liver disease, impaired liver function can result in the accumulation of bilirubin leading to jaundice. Jaundice is characterized by yellowing of the skin and eyes. Monitoring for jaundice is crucial in assessing the progression of liver disease. B: Hypoglycemia is not a common complication of chronic liver disease. Liver plays a role in glycogen storage and glucose production, so hypoglycemia is less likely. C: Hyperglycemia is more commonly associated with conditions like diabetes rather than chronic liver disease. The liver's role in glucose regulation may be impaired, but hyperglycemia is not a typical complication. D: Anemia is not directly related to liver disease, although it may occur as a secondary complication due to factors like decreased production of certain blood components. Monitoring for anemia is important, but jaundice is a more specific complication of chronic liver disease.

Correct Answer: A

Rationale: The correct answer is A: Lethargic. Lethargic is defined as a state of drowsiness or diminished alertness where the patient can be easily aroused by simple stimuli like calling their name, but they remain drowsy and may drift back to sleep. This patient's ability to be aroused by verbal stimuli and their drowsiness during conversation fits the description of lethargic. Explanation for other choices: B: Obtunded - Obtunded refers to a more severe level of decreased consciousness where the patient is difficult to fully arouse and may have limited interactions with the nurse. C: Stuporous - Stuporous indicates an even deeper state of unconsciousness where the patient requires significant stimulation to be aroused and has minimal responsiveness. D: Semialert - Semialert would describe a patient who is more responsive than lethargic, showing better awareness of their surroundings and able to maintain a conversation more effectively.

Correct Answer: B

Rationale: The correct answer is B: The diaphragm of the stethoscope. The diaphragm is used to assess heart murmurs as it allows for higher-frequency sounds to be heard more clearly. When assessing heart murmurs, using the diaphragm helps to differentiate between systolic and diastolic murmurs, as well as to identify specific characteristics such as intensity and location. A: The bell of the stethoscope is used for low-frequency sounds and would not be ideal for assessing heart murmurs. C: Palpation with the palm of the hand is used to assess pulses and vibrations, not heart murmurs. D: Asking another nurse to double-check the finding is important for validation but does not directly relate to the technique used to assess a heart murmur.