Correct Answer: C

Rationale: The correct answer is C: 'Limit intake of foods high in vitamin K'. Vitamin K can interfere with the effectiveness of warfarin, an anticoagulant medication commonly used to treat conditions like deep vein thrombosis (DVT). Patients on warfarin should maintain a consistent intake of vitamin K-rich foods and be monitored closely. Choices A, B, and D are incorrect because avoiding foods high in vitamin C, increasing intake of green leafy vegetables, and avoiding dairy products are not essential dietary instructions for a client on warfarin therapy for DVT.

Correct Answer: B

Rationale: The correct answer is B: Provisions for adequate hydration and pain management. In managing a sickle cell crisis, it is essential to provide adequate hydration to prevent further sickling of red blood cells and ensure proper pain management to alleviate the severe pain associated with the crisis. While information for parents and home care may be important aspects of overall care, they are not specific to the immediate medical management of a sickle cell crisis. Administration of iron supplements is not recommended during a sickle cell crisis as it can potentially worsen the condition by promoting the production of more sickled red blood cells. Adequate oxygenation is crucial in sickle cell disease, but factor VIII is not typically part of the management of a sickle cell crisis.

Correct Answer: C

Rationale: The correct answer is C, Normal sinus rhythm. Normal sinus rhythm is characterized by a regular rhythm, normal P waves, and a consistent PR interval. In this context, the strip likely shows a normal ECG pattern with these characteristics, indicating a healthy heart rhythm. Choices A, B, and D are incorrect. Atrial fibrillation would show an irregularly irregular rhythm with no discernible P waves. Ventricular tachycardia would display wide QRS complexes and a fast heart rate. Second-degree heart block would exhibit intermittent dropped QRS complexes.

Correct Answer: C

Rationale: In a patient with multiple rib fractures, severe pulmonary contusions, and possible acute Respiratory Distress Syndrome (ARDS), tachypnea (rapid breathing) with dyspnea (shortness of breath) is a critical sign of respiratory distress that warrants immediate intervention by the nurse. Tachypnea and dyspnea indicate inadequate oxygenation and ventilation, which can lead to respiratory failure if not addressed promptly. The other options, such as apical pulse rate, core body temperature, and bruises over the chest area, are important assessments but do not directly indicate the immediate need for intervention in a patient with respiratory distress.

Correct Answer: C

Rationale: The correct answer is C: 'Limit intake of foods high in vitamin K'. Vitamin K can interfere with the effectiveness of warfarin, an anticoagulant medication commonly used to treat conditions like deep vein thrombosis (DVT). Patients on warfarin should maintain a consistent intake of vitamin K-rich foods and be monitored closely. Choices A, B, and D are incorrect because avoiding foods high in vitamin C, increasing intake of green leafy vegetables, and avoiding dairy products are not essential dietary instructions for a client on warfarin therapy for DVT.