Nokea
Which of the following organisms is the most common cause of urinary tract infection (UTI) in children?
- A. Klebsiella
- B. Staphylococcus
- C. Escherichia coli
- D. Pseudomonas
Correct Answer: C
Rationale: Escherichia coli (E. coli) is the most common cause of urinary tract infections (UTIs) in children. UTIs in children are most commonly caused by bacteria entering the urinary tract through the urethra. E. coli is a type of bacteria that naturally resides in the intestines but can cause infections when it enters the urinary tract. Children, especially girls, are more prone to UTIs due to shorter urethras that make it easier for bacteria to travel up to the bladder. Therefore, E. coli is the most likely culprit in causing UTIs in children.
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At what age can most infants sit steadily unsupported?
- A. 4 months
- B. 6 months
- C. 8 months
- D. 10 months
Correct Answer: C
Rationale: Most infants can sit steadily unsupported at around 8 months of age. By this time, they have developed sufficient strength and control in their core muscles to sit up without support. It is important for parents to provide a safe environment for their infants to practice sitting up and to always supervise them during this milestone development.
A 17-year-old boy is admitted in sickle cell crisis. Which of the ff. events most likely contributed to the onset of the crisis?
- A. He started a new job last week.
- B. He had seafood for dinner last night.
- C. He walked home in a cold rain
- D. He has not exercised for a week. yesterday.
Correct Answer: C
Rationale: Walking home in a cold rain can trigger a sickle cell crisis in individuals with sickle cell disease. Exposure to cold temperatures or getting wet can lead to vasoconstriction, causing the blood vessels to narrow and slow down blood flow. This reduced blood flow can increase the likelihood of sickle cells sticking together and blocking blood vessels, leading to pain and tissue damage characteristic of a sickle cell crisis. It is essential for individuals with sickle cell disease to avoid exposure to extreme temperatures, including cold rain, to prevent the onset of a crisis.
Which of the following types of hearing loss does the nurse understand is most improved with the use of a hearing aid?
- A. Conductive
- B. Mixed
- C. Sensorineural
- D. Central
Correct Answer: C
Rationale: Sensorineural hearing loss occurs when there is damage to the inner ear (cochlea) or the auditory nerve. This type of hearing loss is most commonly associated with aging or prolonged exposure to loud noises. Sensorineural hearing loss is typically permanent and cannot be medically or surgically corrected; however, it can be effectively managed with hearing aids. A hearing aid can amplify sound and help individuals with sensorineural hearing loss improve their ability to hear and communicate effectively. Conductive and mixed hearing losses may benefit from other interventions such as surgical procedures, while central hearing loss is related to the processing of sound in the brain and is not effectively managed by hearing aids.
is X linked recessive disorder :
- A. thalassemia
- B. hemophilia
- C. leukemia
- D. sickle anemia
Correct Answer: B
Rationale: Hemophilia is an X-linked recessive disorder where the genes responsible for blood clotting factors are located on the X chromosome. This disorder primarily affects males, as they have only one X chromosome. Females are carriers and can pass the gene on to their sons. Hemophilia results in prolonged bleeding episodes as the blood is unable to clot properly. Thalassemia, leukemia, and sickle cell anemia are not X-linked disorders. Digoxin is a medication used for heart conditions, not related to X-linked disorders.
A 32 y.o. male patient is admitted to a medical unit with a diagnosis of Guillain-Barre Syndrome. His legs are weak, and he is unable to walk without assistance. Which of the ff. is most likely responsible for this syndrome?
- A. Bacterial infection
- B. High-fat diet
- C. Heredity
- D. Autoimmune reaction
Correct Answer: D
Rationale: Guillain-Barre Syndrome (GBS) is an autoimmune disorder where the body's immune system mistakenly attacks the peripheral nerves. This leads to inflammation that damages the nerves and interrupts their ability to send signals to the brain. In the case of the 32-year-old male patient with weak legs, the autoimmune reaction is most likely responsible for causing muscle weakness and difficulty walking. GBS typically presents with ascending muscle weakness starting in the legs and progressing upwards. It is essential to recognize this condition promptly as it can lead to severe complications such as respiratory failure. Treatment often involves supportive care and interventions to manage the autoimmune response.