A student nurse is explaining preventricular atrial contraction (PAC) to his class and would be correct by saying which of the following about where a PAC is produced?
a. SA node
b. AV node
c. By an irritable cell in atria
d. By an irritable cell in ventricle
c. By an irritable cell in atria
rationale: The impulse is initiated by an irritated cell in the atria.
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A researcher is involved in the production of insulin through recombinant DNA technology. Which of the following statements could the researcher best provide as a rationale for her work?
A) The gene fragment responsible for insulin production can be isolated and reproduced. B) Particular bacteria are capable of insulin production. C) It is possible to reproduce the chromosome responsible for insulin production. D) Recombination of DNA base pairs can result in a gene that will produce insulin.
A client in labor is agitated and nervous about the birth of her child. The nurse explains to the client that fear and anxiety cause the release of certain compounds that can prolong labor. Which of the following is the nurse referring to?
A) Prostaglandins B) Catecholamines C) Oxytocin D) Relaxin
The client asks the nurse how bacteria become resistant to antibiotics. What should the nurse include in the response? (Select all that apply.)
Note: Credit will be given only if all correct choices and no incorrect choices are selected. 1. The longer an antibiotic is used in the population and the more often it is prescribed, the higher will be the percentage of resistant strains. 2. Prematurely stopping antibiotic therapy allows some pathogens to survive and become resistant to antibiotics. 3. Bacteria reproduce quickly, and can have a variation in the genetic code that allows them to become resistant. 4. Frequent handwashing by health care providers encourages the spread of bacteria to many clients receiving antibiotics in the hospital. 5. Organisms do not grow resistant to medications.
R.M.'s chest x-ray film reveals bilateral pleural effusions. How do these relate to her
underlying disease? How might they be treated? What will be an ideal response?