Which following parameters correlates best with measurements of the body's total protein stores?

Correct Answer: D

Rationale: Upper arm circumference has been found to correlate best with measurements of the body's total protein stores. This anthropometric measurement is often used as an indicator of nutritional status, particularly protein reserves such as muscle mass. Skinfold thickness can provide information about body fat levels, while height and weight may not specifically indicate protein stores as accurately as upper arm circumference.

Correct Answer: C

Rationale: Pernicious anemia is primarily caused by the body's inability to absorb vitamin B12 due to a lack of intrinsic factor produced by the stomach. However, chronic blood loss can also lead to anemia by depleting the body's iron stores necessary for the production of healthy red blood cells. Acute blood loss can quickly lower the hemoglobin levels in the blood, while chronic blood loss can lead to iron-deficiency anemia over time. Therefore, in assessing clients for pernicious anemia, the nurse should be alert for the risk factor of acute or chronic blood loss as a potential cause of anemia.

Correct Answer: B

Rationale: A PT level of 26 seconds is significantly above the normal range of 9 to 12 seconds. This indicates that the patient's blood is taking much longer to clot than usual, which may put the patient at risk for bleeding. It is important for the nurse to inform the physician before giving the next dose of warfarin because warfarin is a medication that helps prevent blood clots by thinning the blood. However, in this case, the patient's blood is already thin beyond the target range, so giving the next dose of warfarin without physician guidance may further increase the risk of bleeding. The physician may need to adjust the dose or recommend other interventions to manage the patient's PT levels effectively.

Correct Answer: D

Rationale: Hypothyroidism is not a typical risk factor for obstructive sleep apnea.

Correct Answer: C

Rationale: Hepatitis is inflammation of the liver, and it can be caused by viruses, toxins, or chemicals and drugs. Bacteria, however, do not typically cause hepatitis. Common viral causes of hepatitis include hepatitis A, B, and C. Toxins like alcohol and certain medications, as well as exposure to chemicals, can also lead to hepatitis. Therefore, bacteria are not considered one of the primary causes of hepatitis.