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 is the preferred treatment for a patient with unstable angina admitted with chest pain?

A. Administer sublingual nitroglycerin
B. Establish IV access
C. Auscultate heart sounds
D. Obtain cardiac enzymes

Correct answer: A

Rationale: The correct answer is to administer sublingual nitroglycerin. Nitroglycerin helps vasodilate coronary arteries, improving blood flow to the heart, relieving chest pain, and preventing cardiac tissue damage. Establishing IV access (choice B) is important but not the preferred initial treatment for unstable angina with chest pain. Auscultating heart sounds (choice C) and obtaining cardiac enzymes (choice D) are relevant assessments but do not address the immediate symptomatic relief needed for a patient with unstable angina and chest pain.

3. A nurse is assessing a client who has a permanent spinal cord injury and is scheduled for discharge. Which of the following client statements indicates that the client is coping effectively?

A. I would like to play wheelchair basketball. When I get stronger, I think I'll look for a league.
B. I'm glad I'll only be in this wheelchair temporarily. I can't wait to get back to running.
C. I'm so upset that this happened to me. What did I do to deserve this?
D. I feel like I'll never be able to do anything that I want to again. All I am is a burden to my family.

Correct answer: A

Rationale: Choice A is the correct answer because it shows that the client has accepted their disability and is looking towards the future with realistic goals. This positive attitude and focus on engaging in activities that are achievable despite the disability indicate effective coping mechanisms. Choice B is incorrect as it reflects denial of the permanent nature of the disability. Choice C is incorrect as it shows feelings of anger and possible self-blame, which are not indicative of effective coping. Choice D is incorrect as it demonstrates a sense of hopelessness and self-perceived burden, which are signs of maladaptive coping.

4. What are the expected signs of compartment syndrome?

A. Unrelieved pain, pallor, and pulselessness
B. Fever, swelling, and redness
C. Muscle cramps and weakness
D. Redness and itching

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 inadequate blood supply. This results in severe pain that is unrelieved by rest or medication, pallor due to compromised blood flow, and pulselessness as a late sign of severe ischemia. Choices B, C, and D are incorrect. Fever, swelling, and redness are not typical signs of compartment syndrome. Muscle cramps and weakness may occur due to other conditions, but they are not primary indicators of compartment syndrome. Redness and itching are also not commonly associated with compartment syndrome.

5. The nurse misread a patient's glucose as 210 mg/dL instead of 120 mg/dL and administered the insulin dose for a reading over 200 mg/dL. What is the priority action?

A. Administer glucose IV
B. Monitor for hyperglycemia
C. Monitor for hypoglycemia
D. Document the incident

Correct answer: C

Rationale: The priority action is to monitor the patient for signs of hypoglycemia as the nurse administered excess insulin due to misreading the glucose level. Administering glucose IV (Choice A) is not the immediate priority when dealing with hypoglycemia. Monitoring for hyperglycemia (Choice B) is not the correct action as the insulin was administered for a higher glucose reading. Documenting the incident (Choice D) is important but not the priority when the patient's safety is at risk due to possible hypoglycemia.