Which of the following cardiac enzymes is a highly specific biomarker for myocardial damage?
a. CK-MB
b. Troponin I
c. Troponin T
d. LDH
B
Because cTnI is found only in cardiac muscle, it is a highly specific biomarker for myocardial damage, considerably more specific than CK-MB. As a consequence, patients with a positive cTnI result and a negative CK-MB result usually rule in an acute myocardial infarction (MI). A negative cTnI result that remains negative many hours after an episode of chest pain is a strong indicator that the patient is not experiencing an acute MI. Even with a negative cTnI result, symptoms of chest pain still indicate that the patient should have a comprehensive cardiac evaluation to determine if there is underlying CAD present that may later lead to complications.
You might also like to view...
The nurse is caring for client on the unit who has just died. The client's adolescent daughter is very quiet, and the nurse attempts to talk with her. The adolescent remains silent, not wishing to talk about the loss
Which action by the nurse is appropriate to assist the adolescent? A) Ask the doctor to prescribe a sedative for the adolescent. B) Ask the adolescent if any friends are available to talk. C) Provide the adolescent with paper, pens, and pencils. D) Notifying the hospital chaplain to come talk with the adolescent.
A patient who requires to be placed in contact isolation would be said to be in the ___ priority of care
a. third c. first b. second d. fourth
The newly diagnosed client with breast cancer asks the nurse if they diagnosed the cancer too late, since the surgeon recommended surgery and radiation therapy. The appropriate response by the nurse is:
A) "Surgery and radiation are recommended in the later stages of breast cancer." B) "Surgery and radiation are recommended in cancer that has not metastasized." C) "Chemotherapy is only used in the first stage." D) "You need to discuss that with your doctor."
What must you teach any patient who is taking a diuretic drug?
a. Avoid foods that are rich in potassium such as bananas and broccoli. b. Sit on the side of the bed for 1 to 2 minutes before getting out of bed. c. Notify the prescriber if the heart rate is less than 70 beats/min. d. Keep a record of dietary intake for a few weeks.