A nurse is assisting with the care of a client who was admitted to the telemetry unit after experiencing chest pain, dyspnea, and diaphoresis. Which of the following ECG findings is a manifestation of acute myocardial infarction?
The PR intervals are 0.15 second.
The QT interval is equal to the R-R interval.
The QRS intervals are 0.08 second.
The ST segment is above the isoelectric line.
The Correct Answer is D
Choice A reason: The PR interval, which is the time from the onset of atrial depolarization (beginning of the P wave) to the onset of ventricular depolarization (beginning of the QRS complex), normally ranges from 0.12 to 0.20 seconds. A PR interval of 0.15 second is within the normal range and does not indicate an acute myocardial infarction.
Choice B reason: The QT interval represents the total time for ventricular depolarization and repolarization. The normal QT interval varies based on heart rate and gender but is typically less than half of the R-R interval in a normal heart rhythm. Therefore, a QT interval equal to the R-R interval is abnormally prolonged, which may suggest other conditions but is not a specific indicator of acute myocardial infarction.
Choice C reason: The QRS complex reflects ventricular depolarization and normally ranges from 0.06 to 0.10 seconds. A QRS interval of 0.08 second is within the normal range and does not suggest an acute myocardial infarction.
Choice D reason: ST segment elevation is a critical finding in the diagnosis of acute myocardial infarction. The ST segment should be at the isoelectric line; elevation above this line is indicative of myocardial injury and is a key diagnostic criterion for ST-elevation myocardial infarction (STEMI). An elevated ST segment is often seen in the early stages of an acute myocardial infarction and requires immediate medical attention.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["2"]
Explanation
Step 1 is to identify the prescribed dose of digoxin, which is 0.25 mg.
Step 2 is to identify the amount of digoxin available per tablet, which is 0.125 mg/tablet.
Step 3 is to calculate the number of tablets the nurse should administer per dose. This is done by dividing the prescribed dose by the amount available per tablet. So, 0.25 mg ÷ 0.125 mg/tablet = 2 tablets.
The nurse should administer 2 tablets per dose.
Correct Answer is B
Explanation
Choice A reason : Probiotics are beneficial for gut health and may have a role in maintaining a healthy immune system, but they are not primarily known for lowering blood pressure. While some studies suggest a potential benefit of probiotics on blood pressure, more research is needed to establish a direct effect.
Choice B reason : Garlic is well-known for its potential benefits in lowering blood pressure. It contains allicin, which is thought to help relax blood vessels and improve blood flow, thereby reducing blood pressure. Studies have shown that garlic supplements can have a significant impact on reducing blood pressure in individuals with hypertension.
Choice C reason : Ginger root is commonly used for its anti-inflammatory properties and gastrointestinal benefits. Some studies suggest that ginger may help lower blood pressure, but the evidence is not as strong as it is for garlic. Therefore, it is not the primary recommendation for hypertension management.
Choice D reason : Valerian is often used for its sedative effects and to aid sleep. There is limited evidence to suggest that valerian has any significant impact on blood pressure. It is not typically recommended as a treatment for hypertension.
Whether you are a student looking to ace your exams or a practicing nurse seeking to enhance your expertise , our nursing education contents will empower you with the confidence and competence to make a difference in the lives of patients and become a respected leader in the healthcare field.
Visit Naxlex, invest in your future and unlock endless possibilities with our unparalleled nursing education contents today
Report Wrong Answer on the Current Question
Do you disagree with the answer? If yes, what is your expected answer? Explain.
Kindly be descriptive with the issue you are facing.