what are the early signs of hypokalemia on an ecg

ATI RN

ATI Capstone Adult Medical Surgical Assessment 2

1. What are the early signs of hypokalemia on an ECG?

A. Flattened T waves
B. Elevated ST segments
C. Prominent U waves
D. Widened QRS complex

Correct answer: A

Rationale: Flattened T waves are an early sign of hypokalemia on an ECG. In hypokalemia, the T waves may flatten and eventually invert. Elevated ST segments are not typically associated with hypokalemia. Prominent U waves are seen in conditions like hypokalemia, but they are not considered an early sign. A widened QRS complex is more commonly associated with hyperkalemia rather than hypokalemia.

2. What are the adverse effects of radiation after a mastectomy?

A. S3 heart sound, fatigue
B. Pulselessness in the affected extremity
C. SOB and JVD
D. Localized pain, swelling, erythema

Correct answer: A

Rationale: The correct answer is A: S3 heart sound, fatigue. Radiation after a mastectomy can lead to fatigue and symptoms of heart failure, such as the presence of an S3 heart sound. Choices B, C, and D are incorrect. Pulselessness in the affected extremity would be more relevant to vascular complications, shortness of breath (SOB) and jugular venous distention (JVD) could indicate cardiac or respiratory issues unrelated to radiation, and localized pain, swelling, and erythema are more characteristic of a local inflammatory response rather than the systemic effects of radiation post-mastectomy.

3. What should be done if a patient experiences abdominal cramping during enema administration?

A. Lower the height of the enema solution container
B. Stop the procedure and remove the tubing
C. Continue the enema at a slower rate
D. Increase the flow of the enema solution

Correct answer: A

Rationale: When a patient experiences abdominal cramping during enema administration, the appropriate action is to lower the height of the enema solution container. This adjustment helps alleviate the cramping by reducing the pressure of the solution entering the colon. Stopping the procedure and removing the tubing (Choice B) is not necessary unless there are other complications. Continuing the enema at a slower rate (Choice C) may not address the immediate discomfort caused by cramping. Increasing the flow of the enema solution (Choice D) can exacerbate the cramping and should be avoided.

4. What are the common manifestations of compartment syndrome?

A. Unrelieved pain, pallor, pulselessness
B. Redness and swelling
C. Fever and infection
D. Swelling and redness

Correct answer: A

Rationale: The correct manifestations of compartment syndrome are unrelieved pain, pallor, and pulselessness. These symptoms indicate compromised blood flow and neurovascular compromise, necessitating immediate medical intervention. Redness and swelling (Choice B) are more commonly associated with inflammation or infection rather than compartment syndrome. Fever and infection (Choice C) are not typical manifestations of compartment syndrome. Swelling and redness (Choice D) are general signs that can be seen in various conditions and are not specific to compartment syndrome.

5. A nurse is assessing a client who has meningitis. The nurse should identify which of the following findings as a positive Kernig's sign?

A. After stroking the lateral area of the foot, the client's toes contract and draw together
B. After hip flexion, the client is unable to extend their leg completely without pain
C. The client's voluntary movement is not coordinated
D. The client reports pain and stiffness when flexing their neck

Correct answer: B

Rationale: A positive Kernig's sign is identified when a client is unable to extend their leg completely without pain after hip flexion. This finding suggests meningeal irritation. Choices A, C, and D do not describe Kernig's sign. Choice A describes a normal plantar reflex, Choice C refers to coordination deficits, and Choice D indicates neck pain and stiffness, which are not related to Kernig's sign.