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

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.

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.

Correct Answer: A

Rationale: Trousseau's sign is a clinical sign characterized by carpal spasm induced by inflating a blood pressure cuff above the systolic pressure for a few minutes. It is indicative of hypocalcemia, specifically low calcium levels in the blood. Therefore, the nurse would monitor the client for Trousseau's sign to assess for potential hypocalcemia. This could prompt the healthcare provider to order further diagnostic tests or interventions to address the underlying calcium imbalance. Options B, C, and D do not directly relate to monitoring for Trousseau's sign.

Correct Answer: C

Rationale: Hypokalemia is indicated in Ms. CC's decreased muscle tone and deep tendon reflexes. Potassium is an essential electrolyte for muscle function, including maintaining muscle tone and supporting proper nerve conduction for reflexes. When potassium levels are low, it can lead to muscle weakness, decreased muscle tone, and reduced deep tendon reflexes. With severe diarrhea, potassium is often lost along with fluids, leading to a potential electrolyte imbalance such as hypokalemia. Additionally, hypokalemia can cause cardiac arrhythmias, muscle cramps, and fatigue, further supporting the presence of this electrolyte imbalance in Ms. CC.

Correct Answer: B

Rationale: The correct answer is B because implementing a needle exchange program is an effective way to reduce transmission of HIV among intravenous drug users. By providing clean needles in exchange for dirty needles, the risk of sharing contaminated needles and spreading the virus is significantly reduced. This approach also helps prevent the transmission of other bloodborne diseases, such as Hepatitis C. The other statements do not demonstrate an understanding of how to reduce HIV transmission - for example, encouraging breastfeeding for HIV-positive mothers can transmit the virus to the baby, birth control pills do not protect against HIV, and natural skin condoms do not offer the same level of protection as latex condoms.