Correct Answer: D

Rationale: The correct answer is D: Proper positioning. Proper positioning helps maintain joint alignment, prevents pressure ulcers, and reduces the risk of contractures by keeping the muscles in a neutral position. This is crucial in preventing complications associated with spasticity. A: Active exercise may exacerbate spasticity and lead to muscle fatigue, increasing the risk of contractures. B: Use of tilt board may not directly address the need for proper positioning to prevent contractures. C: Deep massage may provide temporary relief but does not address the underlying issue of maintaining proper positioning to prevent contractures.

Correct Answer: D

Rationale: The correct answer is D: Peritonitis. Peritonitis is a major complication of peritoneal dialysis due to infection of the peritoneum. It can lead to serious consequences if not treated promptly. The nurse should monitor for signs of peritonitis such as abdominal pain, cloudy dialysate, fever, and increased white blood cell count. Internal hemorrhage (A), hydronephrosis (B), and ecchymosis (C) are not major complications specific to peritoneal dialysis. Internal hemorrhage can occur but is less common. Hydronephrosis is more related to obstruction of the ureters. Ecchymosis refers to bruising and is not directly associated with peritoneal dialysis.

Correct Answer: B

Rationale: The correct answer is B: Stage 2 hypertension. The patient's BP readings consistently fall within the range of 160-179 systolic or 100-109 diastolic, which aligns with the criteria for Stage 2 hypertension based on the current guidelines. This classification indicates a higher level of hypertension that requires prompt medical attention and intervention to reduce the risk of complications. Choices A, C, and D are incorrect because they do not correspond to the BP readings provided, falling outside the range for prehypertension, Stage 1 hypertension, and posthypertension.

Correct Answer: C

Rationale: Rationale: Step 1: Coughing is the primary way TB bacteria are spread. Step 2: By coughing into a handkerchief or tissue, the TB bacteria are contained. Step 3: Washing the handkerchief in hot water or discarding it prevents the bacteria from spreading. Step 4: This method reduces the risk of infecting family members. Summary of Incorrect Choices: A: Wearing gloves does not prevent airborne transmission of TB. B: Keeping windows closed can increase the concentration of bacteria in the air. D: Boiling water is not necessary to prevent TB transmission.

Correct Answer: B

Rationale: The correct answer is B: PTT (Partial Thromboplastin Time) because it specifically measures the effectiveness of heparin therapy by assessing the intrinsic pathway of the coagulation cascade. A prolonged PTT indicates that heparin is achieving the desired anticoagulant effect. A: INR (International Normalized Ratio) is used to monitor warfarin therapy, not heparin. C: PT (Prothrombin Time) is also used to monitor warfarin therapy. D: Bleeding time is not typically used to monitor heparin therapy and is more focused on platelet function rather than coagulation factors.