A nurse is admitting a client who reports chest pain and has been placed on a telemetry monitor. Which of the following should the nurse analyze to determine whether the client is experiencing a myocardial infarction?
Twave
Ssegment
QRS duration
PR interval
The Correct Answer is B
The Ssegment is the portion of an electrocardiogram (ECG) that represents early ventricular repolarization, which occurs after ventricular contraction and before ventricular relaxation. The Ssegment can be elevated or depressed in cases of myocardial infarction (MI), indicating ischemia or injury to the myocardium due to reduced blood flow or oxygen supply.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A history of inflammatory bowel disease, such as Crohn's disease or ulcerative colitis, is a risk factor for colorectal cancer . These conditions cause chronic inflammation and damage to the cells lining the colon and rectum, which may increase the likelihood of DNA mutations and cancer development. A diet high in fiber may help lower the risk of colorectal cancer by promoting regular bowel movements and reducing exposure to toxins. Age 46 years is not a significant risk factor, as most cases of colorectal cancer occur in people older than 50. BMI of 24 is within the normal range and does not indicate obesity, which is another risk factor for colorectal cancer.
Correct Answer is C
Explanation
Sinus bradycardia is a type of cardiac arrhythmia characterized by a heart rate lower than 60 beats per minute in adults, or below the normal range for age in children. It can be diagnosed by an electrocardiogram (ECG) that shows regular P waves with constant morphology preceding every QRS complex, and positive in lead II.
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