If melena appears, a minimum of what amount of blood has been deposited into the gastrointes-tinal (GI) tract?
a. 35 mL
b. 50 mL
c. 80 mL
d. 100 mL
B
For the symptom of melena (dark, tarry stools) to appear, a minimum of 50 to 75 mL of blood must have entered the GI tract.
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Upon interpretation of a patient's laboratory results, the nurse recognizes that a patient with HIV is considered to have AIDS when the CD4 T lymphocyte cell count drops below:
A) 200 cells/mm3 of blood B) 300 cells/mm3 of blood C) 400 cells/mm3 of blood D) 500 cells/mm3 of blood
A couple is at the clinic for preconceptual counseling. Both parents are 40 years old. The nurse knows that the education session has been successful when the wife states: (Select all that apply.)
A. "We are at low risk for having a baby with Down syndrome." B. "Our children are more likely to have genetic defects." C. "Children born to parents this age have sex-linked disorders." D. "The tests for genetic defects can be done early in pregnancy." E. "It will be almost impossible for us to conceive a child."
Which estimation method is used to estimate parameters in logistic regression?
a. Least-squares estimation b. Ordinary least-squares estimation c. Maximum likelihood estimation d. Likelihood ratio estimation
A patient with a history of sun exposure is concerned about broken blood vessels on the cheeks. What should the nurse realize this patient is describing?
A. Nevus flammeus B. Venus lakes C. Skin tags D. Telangiectases