Nokea
Small round blue cell tumors refer to all the following EXCEPT
- A. non-Hodgkin lymphoma
- B. osteosarcoma
- C. Ewing sarcoma
- D. rhabdomyosarcoma
Correct Answer: B
Rationale: Osteosarcoma does not typically fall under the category of small round blue cell tumors.
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Three days after admission Ms. CC continued to have frequent stools. Her oral intake of both fluids and solids are poor. Her physician ordered parenteral hyperalimentation. Hyperalimentation solutions are:
- A. Hypotonic solutions used primarily to increase osmotic pressure of blood plasma
- B. Hypertonic solutions used primarily for hydration when hemoconcentration is present
- C. Alkalizing solutions used to treat metabolic acidosis thus reducing cellular sweating
- D. Hyperosmolar solutions used primarily to reverse negative nitrogen balance
Correct Answer: D
Rationale: Hyperalimentation solutions are hypertonic or hyperosmolar solutions used to provide complete nutrition intravenously when a patient is unable to receive adequate nutrition orally. These solutions contain a high concentration of glucose, amino acids, electrolytes, and essential vitamins and minerals. They are used to reverse negative nitrogen balance, provide adequate caloric intake, and promote healing and recovery in patients who are unable to eat or absorb nutrients properly. Hyperalimentation solutions are not used to increase the osmotic pressure of blood plasma (Choice A), for hydration when hemoconcentration is present (Choice B), or to treat metabolic acidosis (Choice C).
The nurse is conducting a staff in-service on appearance of childhood skin conditions. Lymphangitis ("streaking") is frequently seen in which condition?
- A. Cellulitis
- B. Folliculitis
- C. Impetigo contagiosa
- D. Staphylococcal scalded skin
Correct Answer: A
Rationale: Lymphangitis, characterized by "streaking" of red lines extending from the site of infection, is frequently seen in cellulitis. Cellulitis is a bacterial skin infection that affects the deeper layers of the skin and subcutaneous tissues. The red streaking in lymphangitis indicates an infection and inflammation of the lymphatic vessels, which are responsible for removing waste and fluids from the tissues. In cellulitis, bacteria enter the skin through a crack or break, leading to infection, inflammation, and the characteristic presentation of lymphangitis. This condition requires prompt medical attention and treatment with antibiotics to prevent further complications.
Tara is an 11-year-old girl diagnosed with type 1 diabetes mellitus (DM). She asks her attending nurse why she can't take a pill rather than shots like her grandmother does. Which of the following would be the nurse's best reply?
- A. "If your blood glucose levels are controlled, you can switch to using pills."
- B. "The pills correct fat and protein metabolism, not carbohydrate metabolism."
- C. "Your body does not make insulin, so the insulin injections help to replace it."
- D. "The pills work on the adult pancreas, you can switch when you are 18."
Correct Answer: C
Rationale: The nurse's best reply would be option C, "Your body does not make insulin, so the insulin injections help to replace it." This response directly addresses Tara's question about why she needs insulin injections instead of pills. In type 1 diabetes mellitus, the body's immune system mistakenly attacks the beta cells in the pancreas that produce insulin. As a result, individuals with type 1 DM do not produce insulin, so they require insulin injections to replace the missing hormone. Unlike type 2 diabetes where oral medications can be used to manage the condition, individuals with type 1 diabetes rely on insulin injections to regulate their blood glucose levels.
Small round blue cell tumors refer to all the following EXCEPT
- A. non-Hodgkin lymphoma
- B. osteosarcoma
- C. Ewing sarcoma
- D. rhabdomyosarcoma
Correct Answer: B
Rationale: Osteosarcoma does not typically fall under the category of small round blue cell tumors.
Which is the most common causative agent of bacterial endocarditis?
- A. Staphylococcus albus
- B. Streptococcus hemolyticus
- C. Staphylococcus albicans
- D. Streptococcus viridans
Correct Answer: D
Rationale: Streptococcus viridans is the most common causative agent of bacterial endocarditis. This group of bacteria consists of various species, including S. sanguinis and S. mutans, which normally reside in the oral cavity and are commonly associated with endocarditis following dental procedures. Streptococcus viridans can enter the bloodstream due to dental work, oral infections, or trauma to the oral tissues, and cause infective endocarditis by adhering to damaged heart valves or endocardium. Staphylococcus aureus and Enterococcus species are other common pathogens associated with endocarditis, but Streptococcus viridans remains the most prevalent causative agent.