Nokea
You are assigned to evaluate the outcome of fecal occult blood test as a screening test for patients with bowel cancer. The total number of patients who underwent the test is 2030; in those whom the disease is confirmed are 30. The results of fecal occult blood test are as follows: in 20 patients who has a confirmed bowel cancer (truly positive), and in 180 patients who don't have the disease (falsely positive); in 10 patients who truly has the disease (falsely negative), and in 1820 patients who are not affected by the disease (truly negative). All the following statements are true EXCEPT
- A. the prevalence of the disease for those population is 1.48%
- B. the sensitivity of the test is 67%
- C. the specificity of the test is 91%
- D. the positive predictive value is 20%
Correct Answer: A
Rationale: Prevalence = (Total cases / Total population) * 100 = (30 / 2030) * 100 ≈ 1.48%. This statement is correct, so it is the exception as the question asks for the incorrect statement.
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Patients with Guillain-Barre Syndrome should be closely monitored. Which of the ff. parameters is most important to be checked regularly for acute complications?
- A. BUN and creatinine
- B. Hgb and Hct
- C. ABG
- D. Serum potassium
Correct Answer: C
Rationale: Patients with Guillain-Barre Syndrome are at risk for respiratory complications due to muscle weakness and paralysis, particularly affecting the respiratory muscles. Monitoring arterial blood gas (ABG) levels is crucial in assessing respiratory function and detecting respiratory failure early in these patients. ABG levels provide information on oxygenation, ventilation, and acid-base balance, which are essential parameters to monitor closely in patients with Guillain-Barre Syndrome to prevent respiratory compromise and potential respiratory failure. Regular ABG monitoring helps healthcare providers intervene promptly if respiratory abnormalities develop, ensuring timely treatment and preventing serious complications.
A nurse is assessing a child with an unrepaired ventricular septal defect. Which heart sound does the nurse expect to assess?
- A. Palpitations
- B. Wheeze
- C. Murmur
- D. Physiologic splitting
Correct Answer: C
Rationale: A ventricular septal defect (VSD) is a congenital heart defect characterized by a hole in the septum that separates the heart's two lower chambers (ventricles). When assessing a child with an unrepaired VSD, the nurse would expect to hear a murmur. The murmur is typically described as a harsh, holosystolic (pansystolic) murmur, best heard at the left lower sternal border. This murmur occurs due to the turbulent blood flow across the defect during systole. It is important for the nurse to recognize this characteristic murmur associated with a VSD to facilitate appropriate management and follow-up care for the child.
Wilma was shocked to see that the Tracheostomy was dislodged. Both the inner and outer cannulas was removed and left hanging on James' neck. What are the 2 equipment's at james' bedside that could help Wilma deal with this situation?
- A. New set of tracheostomy tubes and Oxygen tank
- B. Theophylline and Epinephrine
- C. Obturator and Kelly clamp
- D. Sterile saline dressing
Correct Answer: A
Rationale: In the situation described, the best equipment at James' bedside to address the dislodged tracheostomy and the removal of both the inner and outer cannulas would be a new set of tracheostomy tubes and an oxygen tank.
Which describes marasmus?
- A. Deficiency of protein with an adequate supply of calories
- B. Not confined to geographic areas where food supplies are inadequate
- C. Syndrome that results solely from vitamin deficiencies
- D. Characterized by thin, wasted extremities and a prominent abdomen resulting from edema (ascites)
Correct Answer: D
Rationale: Marasmus is a form of severe malnutrition characterized by a deficiency of both calories and protein in the diet. It typically occurs in young children and is often associated with a lack of adequate food intake. The classic presentation of marasmus includes extreme wasting of muscle and fat tissues, resulting in a gaunt appearance with thin limbs and a distended abdomen due to diminished muscle and subcutaneous fat. This differentiates it from kwashiorkor, another form of severe acute malnutrition characterized by edema and a protruding belly but with retained muscle mass. Therefore, option D, characterized by thin, wasted extremities and a prominent abdomen resulting from edema (ascites), accurately describes marasmus.
Laboratory confirmation of the diagnosis in Question 1 can best be obtained by measuring the toxic compound's concentration in which of the following?
- A. Urine
- B. Blood
- C. Hair
- D. Saliva
Correct Answer: A
Rationale: Mercury levels are most accurately measured in urine, especially in cases of chronic exposure.