Nursing Elites

1. What is a condition characterized by the presence of air or gas in the pleural space, leading to the collapse of the lung?

• A. Pneumothorax
• B. Pulmonary embolism
• C. Pleural effusion
• D. Atelectasis

Correct answer: A

Rationale: The correct answer is Pneumothorax. Pneumothorax occurs when air or gas accumulates in the pleural space, causing the lung to collapse. This condition can result in symptoms such as chest pain and difficulty breathing. Pulmonary embolism (choice B) is a blockage in one of the pulmonary arteries in the lungs, usually caused by a blood clot. Pleural effusion (choice C) is the accumulation of excess fluid in the pleural space, not air or gas. Atelectasis (choice D) refers to the collapse or closure of a lung resulting in reduced or absent gas exchange.

2. Which structure serves as the normal pacemaker of the heart?

• A. SA node
• B. AV node
• C. Purkinje fibers
• D. Atria

Correct answer: A

Rationale: The correct answer is the SA node. The sinoatrial (SA) node is known as the natural pacemaker of the heart as it generates electrical impulses initiating each heartbeat. The SA node is located in the right atrium and sets the rhythm and rate of the heartbeat. The AV node (choice B) is responsible for delaying the electrical impulse to allow the atria to contract before the ventricles. Purkinje fibers (choice C) are specialized cardiac fibers responsible for the rapid conduction of impulses to the myocardial cells, and the atria (choice D) are the upper chambers of the heart involved in receiving blood from the veins.

3. What is the condition where the pericardium, the sac surrounding the heart, becomes inflamed, leading to chest pain and other symptoms?

• A. Pericarditis
• B. Myocarditis
• C. Endocarditis
• D. Pulmonary hypertension

Correct answer: A

Rationale: Pericarditis is the correct answer. It is the inflammation of the pericardium, the sac surrounding the heart, which can lead to chest pain and other symptoms. Myocarditis (choice B) is inflammation of the heart muscle, not the pericardium. Endocarditis (choice C) is inflammation of the inner lining of the heart chambers and valves, not the pericardium. Pulmonary hypertension (choice D) is high blood pressure in the arteries of the lungs, not related to pericardial inflammation.

4. The nurse is administering nitroglycerin IV to a client with chest pain. What is the most important parameter to monitor?

• A. Blood pressure
• B. Heart rate
• C. Oxygen saturation
• D. Respiratory rate

Correct answer: A

Rationale: The correct answer is A: Blood pressure. When administering nitroglycerin IV to a client with chest pain, monitoring blood pressure is crucial as nitroglycerin can cause significant hypotension. While heart rate, oxygen saturation, and respiratory rate are important parameters to assess, blood pressure takes precedence in this scenario due to the potential hypotensive effects of nitroglycerin.

5. What test measures the pressure in the arteries during the contraction and relaxation of the heart?

• A. Blood pressure test
• B. Electrocardiogram (ECG or EKG)
• C. Spirometry
• D. Pulse oximetry

Correct answer: A

Rationale: The correct answer is 'Blood pressure test.' This test measures the pressure in the arteries during the contraction (systolic) and relaxation (diastolic) phases of the heart, providing important information about heart health. Choice B, 'Electrocardiogram (ECG or EKG),' records the heart's electrical activity and is not specifically related to measuring arterial pressure. Choice C, 'Spirometry,' assesses lung function by measuring airflow. Choice D, 'Pulse oximetry,' measures oxygen saturation in the blood, not arterial pressure.

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