The nurse is preparing a client for magnetic resonance imaging (MRI) to confirm or rule out a spinal cord lesion. During the MRI scan, which of the following would pose a threat to the client?

Correct Answer: B

Rationale: The correct answer is B: The client wears a watch and wedding band. This is because metal objects such as watches and jewelry can be hazardous during an MRI scan due to the strong magnetic field, leading to potential movement or heating of the metal objects, causing harm to the client. A: The client lies still - This is important for obtaining clear images during an MRI scan and does not pose a threat to the client. C: The client asks questions - Asking questions during an MRI scan does not pose a direct threat to the client's safety. D: The client hears thumping sounds - Thumping sounds are a normal part of the MRI scan and do not pose a threat to the client's safety.

Correct Answer: B

Rationale: The correct answer is B because changing habits and customs that predispose the individual to cancer is crucial in preventing cancer. This includes lifestyle changes such as quitting smoking, maintaining a healthy diet, exercising regularly, and avoiding excessive sun exposure. By modifying behaviors that increase cancer risk, individuals can significantly reduce their chances of developing cancer. A: Increasing governmental control of potential carcinogens is not the first step towards effective cancer control as individual behaviors have a more direct impact on cancer risk. C: Conducting more mass screening programs is important but not the first step as prevention through lifestyle changes takes priority. D: Educating the public and professionals about cancer is essential but changing habits is the initial crucial step in effective cancer control.

Correct Answer: B

Rationale: The correct answer is B: Isolated systolic hypertension. This is because in isolated systolic hypertension, the systolic blood pressure is elevated while the diastolic blood pressure remains normal. This condition is common in older adults and is often related to aging and stiffening of the arteries. Primary hypertension (A) typically involves both elevated systolic and diastolic pressures. Secondary hypertension (C) is caused by an underlying condition. Hypertensive emergency (D) is characterized by severe elevations in both systolic and diastolic pressures with acute target organ damage.

Correct Answer: C

Rationale: The correct answer is C - the circulating and scrub nurse first assistant. The circulating nurse is responsible for counting needles, sponges, and instruments during the closing of the surgical incision to ensure nothing is left inside the patient. The scrub nurse first assistant also plays a crucial role in this process by assisting in the counting and keeping track of the items used during the procedure. The other choices are incorrect because the surgeon and anesthesiologist (A) are not typically involved in counting items during the surgical closure, the surgeon and the registered (B) may not have the necessary training for accurate counting, and the anesthesiologist and anesthetist (D) are not directly involved in the surgical closing process.

Correct Answer: D

Rationale: The correct answer is D: Administer pain medication. The priority in this situation is to address the patient's pain and provide relief. Administering pain medication will help alleviate the discomfort and enable the patient to mobilize with crutches or a walker. Walking without pain is crucial for the patient's recovery. Explanation for other choices: A: Assisting the patient to walk with crutches may worsen the pain and should not be attempted until the pain is managed. B: Obtaining a walker is not the priority as the immediate concern is addressing the patient's pain. C: Consulting physical therapy may be beneficial in the long term, but immediate pain relief is the priority in this situation.

Correct Answer: A

Rationale: The correct answer is A because green leafy vegetables and soybeans are high in Vitamin K, which counteracts the anticoagulant effect of warfarin. Warfarin works by inhibiting Vitamin K-dependent clotting factors in the liver. By consuming Vitamin K-rich foods, the medication's effectiveness is reduced, leading to an increased risk of blood clot formation. Choices B, C, and D are incorrect because they do not address the specific interaction between Vitamin K and warfarin in affecting coagulation. Choice B suggests the opposite effect of what actually occurs. Choices C and D are irrelevant to the pharmacological mechanism of warfarin.

Correct Answer: D

Rationale: Step-by-step rationale: 1. A balanced and varied diet provides essential nutrients for immune function. 2. Including a wide range of foods ensures intake of vitamins, minerals, and antioxidants crucial for immune health. 3. Avoiding extremes like excessive immune-enhancing formulas or eliminating polyunsaturated fatty acids maintains balance. 4. Essential fatty acids and omega-3 fatty acids are beneficial but should be part of a well-rounded diet. 5. For clients with immune-mediated disorders, individualized dietary advice may be necessary. Summary: - A: Immune-enhancing formulas may not be necessary and could disrupt balance. - B: Avoiding all polyunsaturated fatty acids is not advisable as some are essential for health. - C: Increasing essential fatty acids is beneficial but should be part of a balanced diet.

Correct Answer: A

Rationale: The correct answer is A: Vision changes. This is crucial to report immediately because tamoxifen can cause serious eye problems such as retinopathy. Vision changes could indicate a potentially serious adverse reaction that requires prompt medical attention to prevent permanent damage. Headache, hearing loss, and anorexia are not typically associated with tamoxifen use and are less urgent in nature. Reporting vision changes promptly can help prevent irreversible harm and ensure timely intervention.

Correct Answer: B

Rationale: The correct answer is B because encouraging the intake of low-sodium liquids like coffee or tea can worsen hyponatremia. Hyponatremia is a condition characterized by low sodium levels in the blood, so encouraging low-sodium liquids would further dilute the sodium levels. The other choices are correct interventions for hyponatremia: A) assessing for symptoms helps in monitoring the patient's condition, C) monitoring neurological status is crucial as hyponatremia can lead to neurological complications, and D) restricting tap water intake helps in managing fluid intake and preventing further dilution of sodium levels.