A client with a history of angina is being admitted to the emergency department with a suspected myocardial infarction (MI). Which of the following findings will help the nurse distinguish stable angina from an MI?
MI only occurs with exertion.
Stable angina can occur for longer than 30 minutes.
Stable angina can be relieved with rest and nitroglycerin.
The pain of an MI lasts less than 15 minutes.
The Correct Answer is C
Choice A reason: Myocardial infarction (MI) is not limited to occurrences with exertion. While stable angina typically occurs during physical activity or emotional stress, MI can happen at any time, even at rest. The underlying cause of an MI is the complete blockage of blood supply to a part of the heart muscle, usually due to a blood clot in a coronary artery. This blockage can lead to the death of heart muscle tissue, a condition that requires immediate medical attention.
Choice B reason: Stable angina does not typically last for more than 30 minutes. It is characterized by chest pain or discomfort that occurs predictably with exertion or emotional stress and is relieved within minutes by rest or nitroglycerin. In contrast, the pain from an MI is more prolonged and severe, and it is not relieved by rest or nitroglycerin. If chest discomfort lasts longer than 15 minutes and is not alleviated by rest or nitroglycerin, it is a warning sign that the individual may be experiencing an MI.
Choice C reason: This is the distinguishing feature between stable angina and an MI. Stable angina is usually relieved within 3-5 minutes by rest or nitroglycerin, which helps to dilate the coronary arteries and improve blood flow to the heart muscle. Nitroglycerin is ineffective in relieving the symptoms of an MI because the problem is not just reduced blood flow but a complete blockage that nitroglycerin cannot overcome.
Choice D reason: The pain associated with an MI typically lasts for more than 15 minutes and can be quite severe. Unlike stable angina, the pain of an MI is not relieved by rest or nitroglycerin. The duration and severity of the pain, along with other symptoms such as shortness of breath, sweating, nausea, or lightheadedness, help differentiate an MI from stable angina.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason:Providing oral care every 4 hours and as needed is an evidence-based practice to lower the risk of ventilator-associated pneumonia by minimizing the buildup of bacteria in the mouth³.
Choice B reason:Positioning the head of the client's bed in the flat position is not recommended as it can increase the risk of aspiration; elevating the head of the bed to 30° to 45° is the standard practice.
Choice C reason:Turning the client every 4 hours is important for preventing pressure ulcers and improving lung function but is not the primary action for reducing pneumonia risk³.
Choice D reason:Providing humidity helps to maintain mucous membrane integrity but must be carefully managed to prevent bacterial growth and is not the primary action for reducing pneumonia risk³.
Correct Answer is D
Explanation
Choice A. An embolic stroke is caused by an embolus, often a blood clot, that travels to the brain from another part of the body. It does not typically present with a sudden, severe headache.
Choice B. A thrombotic stroke occurs when a blood clot forms inside one of the brain's arteries. While it can cause a headache, it is not usually characterized by a sudden, severe headache.
Choice C. A transient ischemic attack (TIA) is often called a mini-stroke and symptoms are temporary. A sudden, severe headache is more indicative of a hemorrhagic stroke.
Choice D. A hemorrhagic stroke, which involves bleeding within the brain, is most likely to cause a sudden, severe headache, and can lead to seizures and changes in consciousness.
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