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What is a condition where the lungs become stiff and scarred, making it difficult to breathe and get enough oxygen into the bloodstream?
- A. Pulmonary fibrosis
- B. Pulmonary edema
- C. Pulmonary embolism
- D. Pulmonary hypertension
Correct Answer: A
Rationale: Pulmonary fibrosis is the correct answer because it is a condition characterized by stiff and scarred lungs, leading to breathing difficulties and reduced oxygen intake. This occurs due to the formation of excessive connective tissue in the lungs, impairing their ability to expand and contract properly. Pulmonary edema is the accumulation of fluid in the lungs, not scarring. Pulmonary embolism is the blockage of a blood vessel in the lungs by a blood clot. Pulmonary hypertension is high blood pressure in the arteries of the lungs, not related to lung stiffness or scarring.
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What is the procedure where a device is used to shock the heart back into a normal rhythm during a life-threatening arrhythmia?
- A. Defibrillation
- B. Cardioversion
- C. Echocardiogram
- D. Ablation
Correct Answer: A
Rationale: Defibrillation is the correct answer as it is the procedure where an electrical device delivers a shock to the heart to restore normal rhythm during a life-threatening arrhythmia. This shock helps reset the heart's electrical activity. Cardioversion (B) is similar but used for less severe arrhythmias. Echocardiogram (C) is an imaging test to assess heart function, not a treatment. Ablation (D) is a procedure to destroy abnormal heart tissue causing arrhythmias but not used for immediate life-threatening situations like defibrillation.
Which procedure is used to restore a normal heart rhythm in patients with arrhythmias, typically using electrical shocks?
- A. Cardioversion
- B. Defibrillation
- C. Ablation
- D. Angioplasty
Correct Answer: A
Rationale: Sure! Cardioversion is the correct answer because it is the procedure used to restore normal heart rhythm in patients with arrhythmias by delivering synchronized electrical shocks. This method is specifically used for irregular heart rhythms that are not immediately life-threatening. Defibrillation, while also using electrical shocks, is used for life-threatening arrhythmias such as ventricular fibrillation. Ablation involves the destruction of abnormal heart tissue causing arrhythmias, and angioplasty is a procedure to open blocked arteries, not related to restoring heart rhythm.
What procedure uses a balloon to open narrowed or blocked blood vessels in the heart?
- A. Angioplasty
- B. Coronary artery bypass graft
- C. Stent placement
- D. Valve replacement
Correct Answer: A
Rationale: The correct answer is A: Angioplasty. This procedure uses a balloon to open narrowed or blocked blood vessels in the heart. First, a catheter with a deflated balloon is inserted into the blocked artery. Then, the balloon is inflated to widen the artery and improve blood flow. This is a minimally invasive procedure commonly used to treat coronary artery disease.
Choice B: Coronary artery bypass graft involves using blood vessels from another part of the body to bypass blocked arteries, not using a balloon.
Choice C: Stent placement involves inserting a mesh tube to keep the artery open, but it does not use a balloon to open the vessel.
Choice D: Valve replacement is a procedure to replace damaged heart valves and does not involve using a balloon to open narrowed arteries.
Mr. Olds is admitted with constrictive pericarditis. He complains of chest pain and receives morphine as ordered. Pain relief for this patient is also facilitated by
- A. Sitting forward
- B. Lying supine
- C. Taking deep breaths
- D. Coughing
Correct Answer: A
Rationale: Sitting forward reduces pressure on the heart.
Which term refers to the relaxation phase of the heart, during which the chambers fill with blood?
- A. Diastole
- B. Systole
- C. Refractoriness
- D. Automaticity
Correct Answer: A
Rationale: The correct answer is A: Diastole. Diastole refers to the relaxation phase of the heart, allowing the chambers to fill with blood. During diastole, the ventricles are relaxed, and blood flows into them from the atria. Systole, choice B, is the contraction phase where the heart pumps blood out. Refractoriness, choice C, refers to the period when the heart cannot respond to a new stimulus. Automaticity, choice D, is the ability of the heart to generate its own electrical impulses. So, diastole is the correct term for the relaxation phase of the heart where chambers fill with blood, making it the correct answer.