The following are known to be causes of hepatitis except:

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.

Correct Answer: A

Rationale: Homer's syndrome, also known as Horner's syndrome, is a rare condition that occurs when the sympathetic nerve supply to the eye and face is disrupted. In the case of lung cancer invading the ribs and affecting the sympathetic nerve ganglia, it can lead to Homer's syndrome. The classic triad of symptoms in Homer's syndrome includes miosis (constriction of the pupil), partial eyelid ptosis (drooping of the upper eyelid), and anhidrosis (lack of sweating) on the affected side of the face. These symptoms result from the disruption of sympathetic nerve pathways affecting the pupillary dilator muscle, the Müller muscle responsible for eyelid elevation, and sweat glands on one side of the face. Therefore, when assessing for signs and symptoms of Homer's syndrome in this client, the nurse should focus on looking for these specific manifestations.

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.

Correct Answer: C

Rationale: The statement that best describes the infant's physical development that a nurse should expect to find is that birth weight doubles by age 5 months and triples by age 1 year. This characteristic growth pattern is typical in the first year of life. Infants usually regain their birth weight by around 2 weeks of age, double it by about 5 months, and triple it by 1 year. This steady growth reflects the healthy development of the infant and is an important marker of overall well-being and nutrition. It is a key aspect that healthcare providers, including nurses, monitor closely to ensure the infant is thriving.

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.