Nursing Elites

1. Which heart chamber ejects blood into the systemic arterial circulation via the aorta?

• A. Right atrium
• B. Left atrium
• C. Right ventricle
• D. Left ventricle

Correct answer: D

Rationale: The correct answer is D, Left ventricle. The left ventricle pumps oxygenated blood into the systemic circulation via the aorta. This chamber receives oxygen-rich blood from the left atrium and contracts forcefully to propel blood into the aorta, distributing it to the body. The other options, right atrium, left atrium, and right ventricle, do not directly eject blood into the systemic arterial circulation via the aorta. The right atrium receives deoxygenated blood from the body, the left atrium receives oxygenated blood from the lungs, and the right ventricle pumps blood to the lungs for oxygenation.

2. What is a condition where the blood pressure in the arteries is consistently too high, increasing the risk of heart disease and stroke?

• A. Hypertension
• B. Hypotension
• C. Diabetes
• D. Hyperlipidemia

Correct answer: A

Rationale: Hypertension, also known as high blood pressure, is a condition where the force of the blood against the artery walls is consistently too high. This increased pressure can lead to serious health issues such as heart disease and stroke. Hypotension (choice B) refers to low blood pressure, which is not the correct term in this context. Diabetes (choice C) and hyperlipidemia (choice D) are also serious conditions but are not specifically characterized by consistently high blood pressure.

3. The healthcare provider is preparing to administer heparin to a client. What lab value should be monitored?

• A. PT/INR
• B. aPTT
• C. Platelet count
• D. Hemoglobin

Correct answer: B

Rationale: The correct lab value that should be monitored when administering heparin is the aPTT (activated partial thromboplastin time). Heparin affects the intrinsic pathway of the coagulation cascade, and aPTT is a sensitive measure to assess the effectiveness of heparin therapy. Monitoring aPTT helps in adjusting the heparin dose to maintain the desired anticoagulant effect. PT/INR is more specific to monitor warfarin therapy, not heparin. Platelet count and hemoglobin levels are important parameters to assess bleeding tendencies and oxygen-carrying capacity but are not directly related to monitoring heparin therapy.

4. The client is on enalapril (Vasotec) for hypertension. What side effect is most commonly associated with this medication?

• A. Dry cough
• B. Hypotension
• C. Hyperkalemia
• D. Headache

Correct answer: A

Rationale: The correct answer is A: Dry cough. A dry cough is a common side effect of ACE inhibitors like enalapril. ACE inhibitors can cause the accumulation of bradykinin, leading to irritation of the respiratory tract and resulting in a persistent dry cough. Hypotension (choice B) is a possible side effect of ACE inhibitors but is less common than a dry cough. Hyperkalemia (choice C) is another side effect of ACE inhibitors, but it is not the most commonly associated one. Headache (choice D) is not a common side effect of enalapril compared to a dry cough. Therefore, the most commonly associated side effect with enalapril is a dry cough.

5. Which term refers to the ability of the heart to initiate impulses repetitively and spontaneously?

• A. Contractility
• B. Excitability
• C. Automaticity
• D. Rhythmicity

Correct answer: C

Rationale: The correct answer is C: Automaticity. Automaticity is the specific term used to describe the heart's ability to generate impulses repetitively and spontaneously. Contractility (A) refers to the ability of muscle fibers to contract, not the initiation of impulses. Excitability (B) is the ability of cells to respond to stimuli but is not specific to the heart's impulse generation. Rhythmicity (D) is a related term but does not specifically describe the heart's spontaneous impulse initiation.

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