The nurse explains how the myocardium receives oxygen to the new graduate nurse beginning work in the constant care unit; she tells the new nurse the coronary arteries receive blood when?
A) During diastole
B) During systole
C) When the heart is refractory
D) When the aortic valve is open
A
Feedback:
The coronary arteries receive blood during diastole, when the muscle is at rest and relaxed so that blood can flow freely into the muscle. When the ventricle contracts, it forces the aortic valve open, which in turn causes the leaflets of the valve to cover the openings of the coronary arteries.
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Nurse M obtains a signature on an informed consent form from Mr. Y, who is later shown to have a fluctuating level of mental competency. In this case, what is Nurse M's most likely legal position?
A) Free from liability because Mr. Y signed the form B) May be held liable for a violation of Mr. Y's rights C) Liable unless a malpractice insurance policy is in effect D) Not liable because no family member had a durable power of attorney
Many variations related to ethnicity are visible in the musculoskeletal system. Mark all that are correct
A) Caucasians have intermediate curves in their femurs B) Asian Americans have denser bones than other races C) Native Americans have an anterior curvature to their femurs D) Polynesian Americans have a posterior curvature to their femurs E) African Americans have straight femurs
You assist with pre-operative personal care. Which is correct?
a. Dentures are left in place during surgery. b. Pajamas are worn to the operating room. c. Make-up, nail polish, and fake nails are removed before surgery. d. Wigs and hairpieces are allowed in the operating room.
The nurse is reviewing the medical history of a pregnant client being considered for cervical ripening. Which data indicate that the order for misoprostol (Cytotec) should be reconsidered? Select all that apply
1. Current fetal heart rate is tachycardic. 2. Client had one cesarean live birth 3 years ago. 3. Uterine contractions are occurring every 2 minutes. 4. Client has 2+ pedal edema and elevated blood pressure. 5. There is a history of placenta previa with one previous pregnancy.