Nokea
Which of the following statements regarding weight regulation is TRUE?
- A. Weight regain after weight loss is physiological and not necessarily due to a failure of conscious efforts (to lose weight)
- B. The reward system of weight regulation is homeostatic in nature
- C. Liking' and wanting' of food are mainly conscious processes
- D. In human studies, functional MRI (fMRI) studies have shown deficiency in reward-encoding brain regions and/or over activation in cortical inhibitory networks in obese people
Correct Answer: A
Rationale: Weight bounces back biology, not just willpower; rewards aren't homeostatic, liking's subconscious, fMRI flips, hypothalamus rules. Nurses get this chronic rebound truth.
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A new nurse has been assigned a client who is in the hospital to receive iodine-131 treatment. Which action by the nurse is best?
- A. Ensure the client is placed in protective isolation.
- B. Hand off a pregnant client to another nurse.
- C. No special action is necessary to care for this client.
- D. Read the policy on handling radioactive excreta.
Correct Answer: D
Rationale: Iodine-131 is a radioactive isotope used in treatments like thyroid cancer therapy, and it is excreted through body fluids such as urine and sweat. This poses a radiation hazard to healthcare workers and others if not managed properly. The best action for a new nurse is to read the facility's policy on handling radioactive excreta, as this ensures adherence to safety protocols specific to the institution, protecting both the nurse and the client. Protective isolation is not typically required for iodine-131 patients; instead, radiation precautions limit exposure to others. Handing off a pregnant client might be relevant in other contexts but isn't the priority here unless the nurse is pregnant herself, which isn't specified. Assuming no special action is needed is dangerous given the radioactive nature of the treatment. Reviewing the policy equips the nurse with the knowledge to manage waste, maintain a safe distance, and use protective equipment, aligning with radiation safety principles critical in oncology nursing.
Officially approved blood glucose meters used for self-testing and point-of-care diagnostics are not always suitable to measure the blood glucose values in neonates. Question: What is the main cause for this?
- A. Some meters are calibrated to plasma glucose and other meters to blood glucose
- B. Some measurement methods are sensitive to high levels of ascorbic acid (vitamin C)
- C. The measurement variation of some meters is too large
- D. Some meters are sensitive to abnormal haematocrit values
Correct Answer: D
Rationale: Neonate glucose flubs haematocrit swings throw meters off, not calibration, vitamin C, or variance. Nurses adjust for this, a chronic baby glitch.
In the treatment of COPD:
- A. Inhaled long-acting β₂ agonists are a first-line treatment for breathlessness.
- B. Most patients require maintenance use of oral corticosteroids.
- C. The dosage of oral theophylline needs to be reduced in patients commenced on erythromycin.
- D. Long-term oxygen therapy is indicated in a stable patient with a Paâ‚“â‚‚ of 8.5 kPa.
Correct Answer: C
Rationale: COPD management focuses on symptom relief and preventing exacerbations. Inhaled long-acting β₂ agonists are indeed used for breathlessness but are not always first-line; short-acting bronchodilators often precede them. Maintenance oral corticosteroids are not standard due to significant side effects; inhaled corticosteroids are preferred. Theophylline, a bronchodilator, has its metabolism inhibited by erythromycin (a CYP3A4 inhibitor), increasing plasma levels and toxicity risk, necessitating dose reduction. Long-term oxygen therapy is indicated for severe hypoxemia (Paₓ₂ < 7.3 kPa or 7.3-8 kPa with complications), not at 8.5 kPa, which is relatively normal. Non-invasive ventilation is reserved for acute exacerbations, not first-line treatment. The interaction between theophylline and erythromycin is a critical pharmacological consideration in COPD management, making it the standout correct statement.
After change-of-shift report on the oncology unit, which patient should the nurse assess first?
- A. Patient who has a platelet count of 82,000/µL after chemotherapy
- B. Patient who has xerostomia after receiving head and neck radiation
- C. Patient who is neutropenic and has a temperature of 100.5°F (38.1°C)
- D. Patient who is worried about getting the prescribed long-acting opioid on time
Correct Answer: C
Rationale: Neutropenia plus 100.5°F screams infection sepsis looms, outranking low platelets (A bleeding's later), dry mouth , or opioid timing . Nurses in oncology bolt here fever in a white-cell wasteland's a killer, needing stat eyes.
Repaglinide belongs to the class
- A. Sulphonylureas
- B. Thiazolidinediones
- C. Benzoic acid derivatives
- D. Biguanides
Correct Answer: C
Rationale: Repaglinide's benzoic acid kin short, sharp insulin jolts, not sulphonylureas' long haul, thiazolidinediones' sensitivity boost, or biguanides' glucose clamp. It's a mealtime spike buster, a chronic tool pharmacists slot apart from sulphonylurea's sustained push, a nuanced diabetes dance.