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 B
Explanation
Choice A: “I have a tight sensation in my lower leg when I forget to put my feet up.” This statement may indicate the presence of edema, which is common in cirrhosis due to hypoalbuminemia and sodium retention. However, it is not as immediately concerning as other symptoms because it can often be managed with diuretics and compression. It is important to monitor for worsening edema, as it can lead to increased discomfort and risk of skin breakdown.
Choice B: “I can’t button my pants anymore because my belly is so swollen.” This statement is concerning because it suggests the development of ascites, which is the accumulation of fluid in the peritoneal cavity, causing abdominal swelling. Ascites can lead to abdominal discomfort, difficulty breathing, and is a sign of advanced liver disease with significant portal hypertension. It requires medical evaluation and management, which may include paracentesis (removal of fluid), diuretics, and sodium restriction. Cirrhosis is a late stage of scarring (fibrosis) of the liver caused by many forms of liver diseases and conditions, such as hepatitis and chronic alcoholism. Portal hypertension is an increase in the blood pressure within a system of veins called the portal venous system. Veins from the stomach, intestine, spleen, and pancreas merge into the portal vein, which then branches into smaller vessels and travels through the liver.
Choice C: “I’m very constipated and have been straining during bowel movements.” While constipation is uncomfortable and can indicate dietary issues or side effects from medication, it is not typically a direct complication of cirrhosis or portal hypertension. However, straining during bowel movements can increase the risk of bleeding from esophageal varices if they are present, so it is important to manage constipation to prevent potential complications.
Choice D: “When I sleep, I have to sit in a recliner so that I can breathe more easily.” This statement indicates orthopnea, which can be associated with ascites or pleural effusions (fluid in the lungs), both of which can occur in the setting of cirrhosis and portal hypertension. While this symptom is concerning and affects the client’s quality of life, it is generally less concerning than the development of ascites, as it can be managed with adjustments in sleeping position and medical management of the underlying fluid accumulation.
Correct Answer is B
Explanation
Choice A reason: A BUN level of 8 mg/dL and creatinine level of 0.7 mg/dL are within normal ranges and would not be expected in a client with CKD².
Choice B reason: Elevated BUN and creatinine levels, such as 45 mg/dL and 8 mg/dL respectively, are indicative of impaired kidney function, which is consistent with CKD².
Choice C reason: A BUN level of 10 mg/dL and creatinine level of 0.3 mg/dL are lower than the expected values for a client with CKD, indicating better kidney function than typically seen in CKD².
Choice D reason: A BUN level of 23 mg/dL and creatinine level of 1.0 mg/dL may be slightly elevated but are not as indicative of CKD as the values in choice B².
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