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?

Correct Answer: C

Rationale: A non-mobile mass with irregular edges is a strong indicator of a cancerous lump in the breast. Cancerous lumps often feel fixed or attached to the surrounding tissue and may have irregular shapes rather than smooth, round contours. The lack of mobility and irregular edges increase suspicion for malignancy and warrant further investigation, such as imaging studies and biopsies. It is important for this patient to follow up with a healthcare provider promptly for further evaluation and appropriate management.

Correct Answer: C

Rationale: Creatinine is a waste product produced by muscle metabolism that is normally filtered by the glomerulus in the kidneys and excreted in urine. The level of creatinine in the urine is a direct reflection of the glomerular filtration rate (GFR). As GFR decreases in conditions such as acute renal failure, the amount of creatinine excreted in the urine also decreases. Therefore, measuring creatinine levels in the urine is a useful clinical indication of the glomerular filtration rate and kidney function. pH, osmolality, and protein level may provide additional information but are not as directly linked to GFR as creatinine levels.

Correct Answer: B

Rationale: Airborne isolation is needed for a child hospitalized with chickenpox (varicella) because the virus causing chickenpox spreads easily through the air when an infected person coughs or sneezes. The virus can also be transmitted through direct contact with the rash or fluid from the blisters. By implementing airborne precautions, healthcare providers aim to prevent the spread of the virus to other patients, staff, and visitors in the healthcare setting. In contrast, mumps, exanthema subitum (roseola), and erythema infectiosum (fifth disease) are generally not transmitted through airborne routes; therefore, they do not require airborne isolation in a hospital setting.

Correct Answer: D

Rationale: Sensitivity = (True positives / Truly infected) * 100 = (83 / 100) * 100 = 83%.

Correct Answer: B

Rationale: Preschool-aged children commonly believe in the reversibility of death due to their cognitive development stage, where magical thinking is prevalent.