The nurse is teaching nursing students about normal physiologic changes in the respiratory system of toddlers. Which best describes why toddlers have fewer respiratory tract infections as they grow older?
a. The amount of lymphoid tissue decreases.
b. Repeated exposure to organisms causes increased immunity.
c. Viral organisms are less prevalent in the population.
d. Secondary infections rarely occur after viral illnesses.
ANS: B
Children have increased immunity after exposure to a virus. The amount of lymphoid tissue increases as children grow older. Viral organisms are not less prevalent, but older children have the ability to resist invading organisms. Secondary infections after viral illnesses include Mycoplasma pneumoniae and group A ?-hemolytic streptococcal infections.
You might also like to view...
The patient has a permanent pacemaker inserted. The provider has set the pacemaker to the demand mode at a rate of 60 beats per minute. The nurse realizes that:
a. the pacemaker will pace only if the patient's intrinsic heart rate is less than 60 beats per minute. b. the demand mode often competes with the patient's own rhythm. c. the demand mode places the patient at risk for the R-on-T phenomenon. d. the fixed rate mode is safer and is the mode of choice.
A patient with allergic rhinitis is taking a compound product of loratadine/pseudoephedrine [Claritin-D] every 12 hours. The patient complains of insomnia. The nurse notes that the patient is restless and anxious
The patient's heart rate is 90 beats per minute, and the blood pressure is 130/85 mm Hg. The nurse will contact the provider to: a. discuss using an intranasal glucocorticoid and loratadine [Claritin]. b. report acute toxicity caused by pseudoe-phedrine. c. suggest using an agent with a sympatho-mimetic drug only. d. suggest using a topical decongestant to minimize systemic symptoms.
Genetic testing indicates that a child has DR3 and DR4 antigens on chromosome 6 of the human leukocyte antigen system. Which statement by the parents would indicate the nurse should reinforce teaching about these test results?
1. "Our son has a genetic immunity disorder.". 2. "These results mean our son has diabetes.". 3. "These markers are present in 95% of people with type 1 diabetes.". 4. "These results are associated with increased susceptibility to diabetes.".
Which is the most important self-protective method for health care personnel against a client on contact precautions?
1. Double gloving 2. Water-resistant gown 3. Cohorting same infection 4. Washing hands thoroughly