When administering an I.M. injection to an infant, the nurse in charge should use which site?

Correct Answer: D

Rationale: When administering an intramuscular (I.M.) injection to an infant, the nurse should use the vastus lateralis muscle. This is the preferred site for infants as it provides a large muscle mass and is less likely to damage nerves and blood vessels compared to other sites. The vastus lateralis is located on the thigh and is easily accessible for injections in infants. It is important to select the appropriate site for I.M. injections in infants to ensure proper medication absorption and minimize the risk of complications.

Correct Answer: B

Rationale: The principle of fluid balance in the body dictates that fluid intake should be approximately equal to the urine output, under normal circumstances. This balance ensures that the body maintains proper hydration levels and that the kidneys are functioning effectively in filtering and excreting waste products. Significant deviations between fluid intake and urine output can indicate potential issues with hydration status or kidney function, making it essential for healthcare professionals like Nurse Jeremy to closely monitor and evaluate these values.

Correct Answer: C

Rationale: When caring for a child with Cushing's syndrome, it is important to monitor weight each day and report any weight loss. Cushing's syndrome is characterized by a metabolic disorder that can lead to weight gain, particularly in the abdominal area. However, sudden weight loss in a child with Cushing's syndrome can be a sign of worsening condition or inadequate treatment. Therefore, monitoring weight regularly is crucial in managing the child's condition and adjusting the treatment plan accordingly.

Correct Answer: C

Rationale: Aplastic anemia is a serious condition characterized by the bone marrow's failure to produce enough blood cells - red blood cells, white blood cells, and platelets. This condition may be inherited or acquired later in life, including during childhood. It results in a deficiency of all types of blood cells, leading to symptoms like fatigue, weakness, frequent infections, and easy bruising or bleeding. Iron deficiency anemia, sickle cell disease, thalassemia, hemophilia, and idiopathic thrombocytopenic purpura are different blood disorders with distinct causes and symptoms, which do not match the description provided in the question.

Correct Answer: D

Rationale: The apex is the bluntly rounded portion of the heart located at the bottom. It is formed by the tip of the left ventricle and points slightly downward and to the left. The apex is essential in detecting the point of maximum intensity of the heartbeat, known as the apical impulse or point of maximal impulse (PMI). This is where the heart beats closest to the chest wall and can be felt or heard during a physical examination. The base of the heart, on the other hand, is the broader superior part of the heart where the major blood vessels enter and exit. The pericardium is the tough sac enclosing the heart, and the aorta is the main artery that carries oxygen-rich blood from the heart to the body.