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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What is the last step when inserting an IV cannula?
- A. Secure the cannula with tape.
- B. Document the insertion site, date, and type of cannula used.
- C. Assess the site
- D. Place a sterile dressing over the insertion site. INFLAMMATORY AND INFECTIOUS DISTURBANCES Caring for clients with upper respiratory infections
Correct Answer: D
Rationale: The last step when inserting an IV cannula is to place a sterile dressing over the insertion site. This helps to protect the site from contamination and reduce the risk of infection. A sterile dressing also helps to maintain the integrity of the insertion site and prevent any foreign materials from entering the wound. Additionally, the dressing provides a barrier between the cannula site and the external environment, promoting healing and reducing the chance of complications.
Bryce is a child diagnosed with coarctation of aorta. While assessing him, Nurse Zach would expect to find which of the following?
- A. Squatting posture
- B. Absent or diminished femoral pulses
- C. Severe cyanosis at birth
- D. Cyanotic ("tet") episodes 46
Correct Answer: B
Rationale: Coarctation of the aorta is a congenital heart defect where there is a narrowing of the aorta, usually near the insertion of the ductus arteriosus. This narrowing can lead to decreased blood flow to the lower body. A common finding in a child with coarctation of the aorta is absent or diminished femoral pulses due to the obstruction of blood flow through the narrowed aorta. Other symptoms may include high blood pressure in the arms, weak lower body pulses, and heart murmur. Squatting posture, severe cyanosis at birth, and cyanotic ("tet") episodes are not typically associated with coarctation of the aorta.
Hemangiomas are the most common benign tumors of infancy, occurring more in full-term infants. Of the following, the most common risk factor of development of hemangioma is
- A. male infant
- B. female infant
- C. infant of diabetic mother
- D. infant delivered by cesarean section
Correct Answer: B
Rationale: Female infants are at higher risk for developing hemangiomas.
A 52-year old female tells the nurse that she has found a painless lump in her right breast during her monthly self- examination. Which assessment finding would strongly suggest that this client's lump is cancerous?
- A. Eversion of the right nipple and mobile mass
- B. Mobile mass that is soft and easily
- C. Non-mobile mass with irregular edges delineated
- D. Non palpable right axillary lymph nodes
Correct Answer: C
Rationale: The assessment finding that strongly suggests that the client's lump is cancerous is a non-mobile mass with irregular edges delineated. Generally, cancerous breast lumps tend to have irregular shapes/edges and lack mobility. This finding is concerning for malignancy because it indicates that the lump is fixed in place and possibly invading nearby tissues, which are characteristics often associated with cancerous tumors. It's essential for the client to undergo further diagnostic tests, such as a biopsy, to confirm the presence of cancer and establish a proper treatment plan.
The following. items are transported in blood plasma, EXCEPT:
- A. Oxygen
- B. Carbon dioxide
- C. Nutrients
- D. Hormones
Correct Answer: A
Rationale: Oxygen is not transported in blood plasma. Instead, it is transported bound to hemoglobin within red blood cells. Carbon dioxide, nutrients, and hormones are examples of substances that are transported in blood plasma. Oxygen binds to hemoglobin in the red blood cells as they pass through the lungs, while carbon dioxide is carried back to the lungs and expelled from the body through the respiratory system. Nutrients like glucose and amino acids are carried in the blood plasma to be delivered to various tissues for energy production and cellular processes. Hormones are chemical messengers that are released into the bloodstream by endocrine glands to regulate numerous physiological functions throughout the body.