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 should be monitored in a patient with diabetes insipidus?

A. Monitor urine specific gravity for values below 1.005
B. Monitor for increased thirst
C. Monitor serum albumin levels
D. Monitor blood pressure closely

Correct answer: A

Rationale: In a patient with diabetes insipidus, monitoring urine specific gravity for values below 1.005 is crucial. Low urine specific gravity indicates excessive water loss, a key characteristic of diabetes insipidus. Monitoring for increased thirst (choice B) may be a symptom presented by the patient, but it does not directly reflect the condition's severity. Monitoring serum albumin levels (choice C) is not typically associated with diabetes insipidus. Monitoring blood pressure closely (choice D) is not a primary concern in diabetes insipidus unless severe dehydration leads to hypotension.

3. What are the manifestations of increased intracranial pressure (IICP)?

A. Restlessness, confusion, irritability
B. Severe nausea and vomiting
C. Elevated blood pressure and bradycardia
D. Decreased heart rate and altered pupil response

Correct answer: A

Rationale: The correct manifestations of increased intracranial pressure (IICP) include restlessness, confusion, and irritability. These symptoms are a result of the brain being under pressure inside the skull. Severe nausea and vomiting (Choice B) are more commonly associated with increased intracranial pressure in children. Elevated blood pressure and bradycardia (Choice C) are not typical manifestations of increased intracranial pressure; instead, hypertension and bradycardia may be seen in Cushing's reflex, which is a late sign of increased IICP. Decreased heart rate and altered pupil response (Choice D) are also not primary manifestations of increased intracranial pressure, although altered pupil response, like a non-reactive or dilated pupil, can be seen in some cases.

4. A nurse is providing discharge teaching to a client who is starting to take carbidopa/levodopa to treat Parkinson's disease. Which of the following instructions should the nurse include in the teaching?

A. This medication can cause your urine to turn a dark color.
B. Expect immediate relief after taking this medication.
C. Take the medication with a high protein food.
D. Skip a dose of the medication if you experience dizziness.

Correct answer: A

Rationale: The correct instruction to include in the teaching is that carbidopa/levodopa can cause the client's urine to turn a dark color, which is a harmless effect. It is crucial for the nurse to educate the client about this common side effect. Choice B is incorrect because immediate relief is not expected; therapeutic effects may take weeks to months. Choice C is incorrect as carbidopa/levodopa should be taken on an empty stomach to enhance absorption. Choice D is incorrect as the client should not skip doses without consulting their healthcare provider, even if they experience dizziness.

5. A nurse is caring for a client who has been experiencing repeated tonic-clonic seizures over the course of 30 minutes. After maintaining the client's airway and turning the client on their side, which of the following medications should the nurse administer?

A. Diazepam IV
B. Lorazepam PO
C. Diltiazem IV
D. Clonazepam PO

Correct answer: A

Rationale: In the scenario described, where the client has been experiencing repeated tonic-clonic seizures over an extended period, the priority is to administer a medication that can rapidly terminate the seizures. Diazepam is the medication of choice for status epilepticus due to its rapid onset of action within 10 minutes when administered intravenously. Lorazepam is also an option, but it is typically administered intravenously as well. Diltiazem is a calcium channel blocker used for conditions like hypertension and angina, not for seizures. Clonazepam, although used for seizures, is not the ideal choice in this acute situation due to its slower onset of action compared to benzodiazepines like diazepam and lorazepam.