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. A nurse is caring for a client who has a peripherally inserted central catheter (PICC). For which of the following findings should the nurse notify the provider?

A. The dressing was changed 7 days ago
B. The circumference of the client's upper arm has increased by 10%
C. The catheter has not been used in 8 hours
D. The catheter has been flushed with 10 mL of sterile saline after medication use

Correct answer: B

Rationale: An increase in the circumference of the client's upper arm by 10% could indicate deep vein thrombosis, which is a serious condition. Deep vein thrombosis can impede blood flow and potentially lead to life-threatening complications. Therefore, the nurse should notify the provider immediately about this finding. Choice A is not an immediate concern as PICC dressing changes are usually done every 7 days. Choice C is a normal finding as catheters may not be used for certain periods. Choice D is a correct procedure for maintaining catheter patency after medication use.

3. A nurse is assessing a client who has a heart rate of 40/min. The client is diaphoretic and has chest pain. Which of the following medications should the nurse plan to administer?

A. Lidocaine
B. Adenosine
C. Atropine
D. Verapamil

Correct answer: C

Rationale: The correct answer is C: Atropine. The client's presentation of bradycardia, diaphoresis, and chest pain indicates reduced cardiac output, requiring intervention to increase the heart rate. Atropine is used to treat bradycardia by blocking cardiac muscarinic receptors, thus inhibiting the parasympathetic nervous system. Lidocaine (Choice A) is used for ventricular arrhythmias, not bradycardia. Adenosine (Choice B) is used for supraventricular tachycardia, not bradycardia. Verapamil (Choice D) is a calcium channel blocker used for certain arrhythmias and hypertension, but not for increasing heart rate in bradycardia.

4. What signs indicate increased intracranial pressure (IICP)?

A. Restlessness, irritability, and confusion
B. Sudden onset of seizures
C. Bradycardia and altered pupil response
D. Loss of consciousness

Correct answer: A

Rationale: Restlessness, irritability, and confusion are early signs of increased intracranial pressure (IICP). These symptoms occur due to the brain's increased pressure within the skull. Sudden onset of seizures (Choice B) is not typically associated with increased intracranial pressure. Bradycardia and altered pupil response (Choice C) are signs of advanced or worsening IICP. Loss of consciousness (Choice D) is a late sign of increased intracranial pressure.

5. What precaution should be advised to a patient following a cataract surgery?

A. Wear dark glasses while outdoors
B. Avoid NSAIDs
C. Use warm compresses
D. Apply cold packs

Correct answer: A

Rationale: Following cataract surgery, patients are advised to wear dark glasses while outdoors. This is crucial to protect the eyes from bright light and prevent complications such as excessive glare or discomfort. Choice B, avoiding NSAIDs, is not directly related to post-cataract surgery care. Choices C and D, using warm compresses and applying cold packs, are not typically part of the standard post-operative care for cataract surgery.