what part of the heart is responsible for starting the electrical impulse to conduct a heart rhythm and contraction of the atria and ventricle what part of the heart is responsible for starting the electrical impulse to conduct a heart rhythm and contraction of the atria and ventricle
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Nursing Elites

ATI RN

ATI Pathophysiology Exam 3

1. What part of the heart is responsible for starting the electrical impulse to conduct a heart rhythm and contraction of the atria and ventricles?

Correct answer: D

Rationale: The sinoatrial node (SA node) in the atrium is indeed responsible for initiating the electrical impulse that starts the heart's rhythm. The SA node is known as the heart's natural pacemaker. Choices A, B, and C are incorrect because while the Purkinje fibers, bundle branches, and atrioventricular node play crucial roles in the conduction of the electrical impulse throughout the heart, the SA node is specifically responsible for initiating this impulse.

2. A client with hypertension is being taught about dietary modifications by a nurse. Which of the following food choices by the client indicates an understanding of the teaching?

Correct answer: C

Rationale: The correct answer is C. Choosing fresh fruits and vegetables is a healthy choice for someone with hypertension as they are low in sodium and high in nutrients. Processed meats (A) are high in sodium and unhealthy fats, which can worsen hypertension. Canned vegetables (B) often have added sodium, so fresh is a better choice. Canned soups (D) are typically high in sodium and should be limited in a hypertensive diet.

3. A recent nursing school graduate is preparing to take the NCLEX. The graduate knows which of the following is true?

Correct answer: C

Rationale: Choice C is correct because if the nurse's home state participates in the compact agreement, she can practice in other states that are part of the agreement, but she must still renew her license in her home state. This is necessary to maintain an active license in her home state. Choice A is incorrect because upon graduation, the nurse can use the title RN if licensed, but it's not automatic. Choice B is incorrect because while the NCLEX is a national exam, the nurse needs to meet individual state requirements for licensure in each state. Choice D is incorrect because an RN license is not permissive but rather a mandatory license to practice nursing.

4. A healthcare professional is preparing to administer packed red blood cells (PRBCs) to a client. Which of the following actions should the healthcare professional take?

Correct answer: B

Rationale: Verifying the client's blood type and Rh factor is crucial before administering blood products to ensure compatibility and prevent adverse reactions. Option A is incorrect because PRBCs are typically infused over a specific time frame based on hospital policy and client condition, not necessarily over 8 hours. Option C is incorrect as PRBCs are usually administered through a larger gauge catheter to prevent hemolysis. Option D is incorrect because PRBCs are typically administered with normal saline and not lactated Ringer's solution.

5. A client with type 2 diabetes mellitus is scheduled for an arteriogram. Which of the following medications should the nurse instruct the client to discontinue 48 hours prior to the procedure?

Correct answer: D

Rationale: The correct answer is D, Metformin. Metformin should be discontinued 48 hours before an arteriogram due to the risk of lactic acidosis. Atorvastatin (Choice A) is a statin used to lower cholesterol levels and is not typically contraindicated before an arteriogram. Digoxin (Choice B) is a medication used for heart conditions and does not need to be discontinued before an arteriogram. Nifedipine (Choice C) is a calcium channel blocker used to treat high blood pressure and angina, and it is not necessary to discontinue before the procedure.

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