what are the expected changes on an ecg for a patient with hypokalemia

ATI RN

ATI Capstone Adult Medical Surgical Assessment 2

1. What are the expected changes on an ECG for a patient with hypokalemia?

A. Flattened T waves
B. Prominent U waves
C. ST elevation
D. Wide QRS complexes

Correct answer: A

Rationale: Flattened T waves are an early sign of hypokalemia on an ECG. Hypokalemia primarily manifests as flattened T waves on an ECG. While prominent U waves can be seen in hypokalemia, they are not as specific as flattened T waves. ST elevation is more commonly associated with conditions like myocardial infarction rather than hypokalemia. Wide QRS complexes are typically not a feature of hypokalemia on an ECG.

2. What lab value should be prioritized in a patient with HIV?

A. CD4 T-cell count below 180 cells/mm3
B. Hemoglobin levels
C. Serum albumin levels
D. White blood cell count

Correct answer: A

Rationale: The correct answer is A: CD4 T-cell count below 180 cells/mm3. In a patient with HIV, monitoring the CD4 T-cell count is crucial as it reflects the status of the immune system. A CD4 T-cell count below 200 cells/mm3 indicates severe immunocompromise and risk of opportunistic infections. Hemoglobin levels (choice B) are important for assessing anemia but do not directly reflect the immune status in HIV patients. Serum albumin levels (choice C) are indicators of nutritional status and inflammation, not specific to HIV disease progression. White blood cell count (choice D) may fluctuate due to various conditions and is not as specific as the CD4 T-cell count in assessing HIV progression.

3. A nurse administers insulin for a misread glucose level. What should the nurse monitor for?

A. Monitor for hypoglycemia
B. Monitor for hyperglycemia
C. Monitor for hyperkalemia
D. Document the incident

Correct answer: A

Rationale: When a nurse administers insulin for a misread glucose level, they should monitor for hypoglycemia. Insulin lowers blood sugar levels, so the patient may experience hypoglycemia if given insulin unnecessarily. Monitoring for hypoglycemia involves observing for symptoms such as shakiness, sweating, dizziness, confusion, and palpitations. Choices B and C are incorrect because administering insulin for a misread glucose level would lower blood sugar levels, resulting in hypoglycemia, not hyperglycemia or hyperkalemia. Choice D is not the immediate priority; the focus should be on patient safety and monitoring for potential adverse effects of the unnecessary insulin.

4. A patient with pre-dialysis end-stage kidney disease is asking for dietary recommendations. What should the nurse suggest?

A. Limit protein intake
B. Limit potassium intake
C. Restrict sodium intake
D. Limit phosphorus intake to 700mg/day

Correct answer: D

Rationale: In patients with pre-dialysis end-stage kidney disease, it is crucial to limit phosphorus intake to 700mg/day to manage their condition. High phosphorus levels can lead to complications such as bone and heart problems. Limiting protein intake is essential in later stages of kidney disease, particularly in dialysis patients to reduce the buildup of waste products. While limiting potassium and restricting sodium intake are also important in kidney disease management, the priority for a patient with pre-dialysis end-stage kidney disease is to control phosphorus levels.

5. What are the early symptoms of compartment syndrome?

A. Unrelieved pain, pallor, and pulselessness
B. Localized redness and swelling
C. Fever and swelling
D. Numbness and tingling

Correct answer: A

Rationale: The correct answer is A: 'Unrelieved pain, pallor, and pulselessness.' Compartment syndrome is characterized by increased pressure within a muscle compartment, leading to reduced blood flow and potential tissue damage. Early symptoms include unrelieved pain (out of proportion to the injury), pallor (pale skin color), and pulselessness (decreased or absent pulses). Choices B, C, and D are incorrect as they do not represent the classic early symptoms of compartment syndrome.