Nokea
What ECG changes are expected in hypokalemia?
- A. Flattened T waves on ECG
- B. Prominent U waves on ECG
- C. Widened QRS complexes on ECG
- D. ST elevation on ECG
Correct Answer: A
Rationale: In hypokalemia, flattened T waves are a common ECG finding due to the decreased extracellular potassium affecting repolarization. Prominent U waves are typically seen in hypokalemia as well, but flattened T waves are the more specific and early ECG change. Widened QRS complexes are associated with hyperkalemia, not hypokalemia. ST elevation is often seen in conditions like myocardial infarction, pericarditis, or early repolarization syndrome, not specifically in hypokalemia.
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A patient with a new diagnosis of diabetes insipidus is planning care. What should be included in the plan of care?
- A. Avoid alcohol
- B. Increase exercise to reduce stress
- C. Increase fluid intake
- D. Restrict sodium intake
Correct Answer: A
Rationale: The correct answer is to avoid alcohol. In diabetes insipidus, excessive urination leads to fluid loss, so it is essential to avoid alcohol which can exacerbate dehydration. Choice B is incorrect as increasing exercise may not directly impact diabetes insipidus. Choice C is also incorrect because although increasing fluid intake may seem intuitive, it is not the primary concern in managing diabetes insipidus. Choice D is not directly related to managing diabetes insipidus; sodium restriction is more relevant in conditions like hypertension or heart failure.
What is an escharotomy and why is it performed?
- A. A surgical incision made to improve circulation in burn injuries
- B. A procedure to remove dead tissue from a wound
- C. A procedure to remove excess fluid from the lungs
- D. A procedure to relieve pain from burns
Correct Answer: A
Rationale: An escharotomy is a surgical procedure involving an incision through the eschar (dead tissue) to relieve pressure in burn injuries. It is performed to improve circulation to the affected area, prevent further damage, and restore blood flow. Choice B is incorrect because an escharotomy is not primarily focused on removing dead tissue but rather on relieving pressure. Choice C is incorrect as it describes a procedure related to pulmonary issues, not burn injuries. Choice D is incorrect because while pain relief may be a result of an escharotomy, it is not the primary purpose of the procedure.
What dietary changes should a patient with GERD make to manage their symptoms?
- A. Avoid mint and spicy foods
- B. Eat large, frequent meals
- C. Consume liquids with meals
- D. Eat small, frequent meals
Correct Answer: A
Rationale: The correct answer is A: Avoid mint and spicy foods. Patients with GERD should avoid foods like mint and spicy dishes as they can trigger symptoms by increasing gastric acid secretion. Choices B, C, and D are incorrect. Eating large, frequent meals can exacerbate GERD symptoms by putting more pressure on the lower esophageal sphincter, consuming liquids with meals can lead to increased reflux, and eating small, frequent meals is the recommended approach to reduce symptoms and manage GERD.
What lab value should be monitored in a patient with HIV?
- A. CD4 T-cell count below 180 cells/mm3
- B. Serum albumin levels
- C. Hemoglobin levels
- D. White blood cell count
Correct Answer: A
Rationale: The correct answer is A: CD4 T-cell count below 180 cells/mm3. Monitoring the CD4 T-cell count is crucial in patients with HIV as it indicates the level of immunocompromise. A CD4 T-cell count below 180 cells/mm3 signifies severe immunosuppression and an increased risk of opportunistic infections. Serum albumin levels (choice B) are important for nutritional status assessment but not specific to HIV monitoring. Hemoglobin levels (choice C) are important for assessing anemia but do not directly reflect HIV disease progression. White blood cell count (choice D) is a general marker of inflammation and infection, but monitoring CD4 T-cell count is more specific and crucial in managing HIV.
What are the manifestations of osteomyelitis?
- A. Localized pain, swelling, erythema
- B. Elevated white blood cells
- C. Elevated calcium levels
- D. Low potassium levels
Correct Answer: A
Rationale: Osteomyelitis often manifests as localized pain, swelling, and erythema due to infection in the bone. These symptoms are characteristic of inflammation and infection in the bone tissue. Elevated white blood cells (Choice B) may be present as part of the body's immune response to the infection but are not specific manifestations of osteomyelitis. Elevated calcium levels (Choice C) and low potassium levels (Choice D) are not typically associated with osteomyelitis.