hyperkalemia is associated with what changes on an ecg

ATI RN

ATI Capstone Adult Medical Surgical Assessment 2

1. What ECG changes are associated with hyperkalemia?

A. Flattened T waves
B. ST depression
C. Prominent U waves
D. Elevated ST segments

Correct answer: B

Rationale: Hyperkalemia is known to cause ST depression on an ECG. Flattened T waves are more commonly seen in hypokalemia. Prominent U waves are associated with hypokalemia rather than hyperkalemia. Elevated ST segments are not typical findings in hyperkalemia.

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. 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.

4. What is the first medication to administer for a patient experiencing wheezing due to an allergic reaction?

A. Albuterol 3 ml via nebulizer
B. Cromolyn 20 mg via nebulizer
C. Methylprednisolone 100 mg IV
D. Aminophylline 500 mg IV

Correct answer: A

Rationale: The correct answer is A, Albuterol 3 ml via nebulizer. Albuterol is the first-line medication for wheezing due to its rapid bronchodilatory effects. Choice B, Cromolyn, is used more for preventing allergic reactions rather than acute relief of wheezing. Choice C, Methylprednisolone, is a steroid used for its anti-inflammatory effects and is not the initial choice for acute relief of wheezing. Choice D, Aminophylline, is a bronchodilator but is not the first-line treatment for wheezing due to allergic reactions.

5. What should a healthcare professional monitor for in a patient with compartment syndrome?

A. Unrelieved pain, pallor, and pulselessness
B. Localized redness and swelling
C. Fever and signs of infection
D. Loss of deep tendon reflexes

Correct answer: A

Rationale: Unrelieved pain, pallor, and pulselessness are classic signs of compartment syndrome. In this condition, increased pressure within a muscle compartment impairs blood flow, leading to severe pain that is not relieved by usual measures, pallor from decreased blood flow, and pulselessness due to compromised circulation. These signs indicate a medical emergency requiring immediate intervention. Localized redness and swelling (Choice B) are more characteristic of inflammation or infection rather than compartment syndrome. Fever and signs of infection (Choice C) are not typical manifestations of compartment syndrome. Loss of deep tendon reflexes (Choice D) is associated with conditions affecting the nervous system, not compartment syndrome.