what ecg changes are expected in a patient with hypokalemia

ATI RN

ATI Capstone Adult Medical Surgical Assessment 2

1. What ECG changes are expected in a patient with hypokalemia?

A. Flattened T waves
B. Prominent U waves
C. Widened QRS complexes
D. Tall T waves

Correct answer: A

Rationale: Flattened T waves are an early indicator of hypokalemia on an ECG. Hypokalemia primarily presents with flattened T waves, not prominent U waves, widened QRS complexes, or tall T waves. Prominent U waves are associated with hypokalemia only in severe cases. Widened QRS complexes are more indicative of hyperkalemia, while tall T waves are seen in hyperkalemia as well.

2. What should the healthcare provider do first when a patient is admitted with chest pain and possible acute coronary syndrome?

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

Correct answer: A

Rationale: Administering sublingual nitroglycerin is the priority intervention when a patient presents with chest pain and suspected acute coronary syndrome. Nitroglycerin helps dilate blood vessels, improve blood flow to the heart, and relieve chest pain. It is crucial to address the pain and potential ischemia promptly to prevent further cardiac tissue damage. Getting IV access, auscultating heart sounds, and obtaining cardiac enzymes are important assessments and interventions, but administering nitroglycerin takes precedence in managing acute coronary syndrome.

3. During an escharotomy on a patient with a burn injury, what is the purpose of this procedure?

A. To release pressure and improve circulation in the affected area
B. To remove dead tissue from the burn area
C. To improve breathing by reducing skin tightness
D. To prevent infection in the burned area

Correct answer: A

Rationale: Corrected Question: During an escharotomy on a patient with a burn injury, the purpose of this procedure is to release pressure and improve circulation in the affected area. This intervention is crucial in severe burns where the formation of eschar (dead tissue) can lead to increased pressure, compromising circulation and potentially causing further tissue damage. Choices B, C, and D are incorrect because escharotomy specifically aims to address pressure and circulation issues in severe burn injuries, rather than removing dead tissue, improving breathing, or preventing infection.

4. What adverse effect might occur in a patient receiving radiation after a mastectomy?

A. Seizures
B. JVD and fatigue
C. SOB and JVD
D. S3 heart sound

Correct answer: D

Rationale: The correct adverse effect that might occur in a patient receiving radiation after a mastectomy is the development of an S3 heart sound. This can result from decreased pumping ability following mastectomy and radiation treatment. Choice A, seizures, is incorrect as seizures are not a common adverse effect of radiation after a mastectomy. Choice B, JVD and fatigue, is incorrect as while fatigue can be a common side effect, JVD (Jugular Venous Distention) is not typically associated with radiation after a mastectomy. Choice C, SOB (Shortness of Breath) and JVD, is incorrect as while shortness of breath can occur, JVD is not a typical adverse effect of radiation post-mastectomy.

5. 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.