What does the QRS wave of an electrocardiogram (ECG) represent?
A. The depolarization of the ventricles
B. The repolarization of the atria
C. The depolarization of the atria
D. The repolarization of the ventricles
Answer: A
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Which of the following statements is an accurate descriptor of the role of viruses in human infections?
A) Viruses have no genetic material of their own. B) Some viruses are capable of transforming normal host cells into malignant cells. C) Viruses are often implicated in cases of transmissible neurodegenerative diseases. D) Viruses require stimulation after a latent period before they are able to produce symptoms.
Which statement made by a parent indicates a need for the nurse to teach safety and ac-cident prevention?
a. "I make sure I always raise the side of the crib when I put my baby to sleep, even though newborns don't move around as much as older infants." b. "I've been reading about what new things my baby will be learning to do in the next month or two, so I'll know what to expect." c. "I'm going to buy a backpack for my 2-week-old baby so I can carry her in it whenever she gets fussy." d. "I always take the phone off the hook when I give my baby a bath so I won't be disturbed."
The nurse is discussing the benefits of meditation to a colleague. Which of the nurse's statements warrants correction?
A) "When you meditate, you try to 'be' rather than 'do.'" B) "Meditation can actually lower your blood pressure and keep you healthier.". C) "When you meditate sometimes stressful and confusing issues become clearer.". D) "Meditation is a useful activity for people who adhere to Easter religious traditions.".
An acutely psychotic patient is restricted to an inpatient unit. Which milieu element has been adapted?
a. Norms b. Balance c. Therapy d. Psychopathology