How is injury manifested on the EKG in a patient experiencing a myocardial infarction?
ST segment elevation
Q wave
inverted T wave
ST segment depression
The Correct Answer is A
A. ST segment elevation: ST segment elevation is a classic sign of myocardial injury, indicating that a portion of the heart muscle is not receiving enough oxygen and is actively injured.
B. Q wave: A Q wave typically appears later, representing a previous myocardial infarction (necrosis), not acute injury.
C. Inverted T wave: This indicates myocardial ischemia, which is a precursor to injury but not indicative of injury itself.
D. ST segment depression: This is typically associated with ischemia or subendocardial infarction, not full-thickness myocardial injury.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. PT/INR: PT/INR is used to assess clotting function and liver synthetic function but does not directly relate to the symptoms of lethargy and confusion.
B. Urea: Urea levels are related to kidney function and protein metabolism but do not directly explain the symptoms of encephalopathy.
C. Ammonia: Elevated ammonia levels in cirrhosis can lead to hepatic encephalopathy, which presents as lethargy and confusion. The liver is unable to convert ammonia to urea, leading to its accumulation in the blood.
D. Albumin: Albumin levels are important in assessing nutritional status and fluid balance in cirrhosis but do not directly cause lethargy and confusion.
Correct Answer is A
Explanation
A. Hypertension: This is not a cause of high-output heart failure. Hypertension typically leads to low-output heart failure due to increased afterload, which causes the heart to work harder.
B. Severe anemia: Severe anemia causes high-output heart failure because the body compensates for the decreased oxygen-carrying capacity by increasing cardiac output.
C. Sepsis: Sepsis can lead to high-output heart failure as the body attempts to maintain perfusion in the face of widespread vasodilation.
D. Hyperthyroidism: Hyperthyroidism increases metabolic demands, which can cause high-output heart failure as the heart attempts to meet the increased needs.
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.