ATI Pediatric Medications Test

Correct Answer: A

Rationale: To calculate the safest dose of amoxicillin for Atta, we multiply the weight (20kg) by the daily dose (50 mg/kg/day) which equals 1000 mg/day. Since the dose is to be given in two divided doses, the safest dose for each administration would be 500 mg. Therefore, the correct answer is 1000 mg, as it aligns with the prescribed dose for this child based on weight and dosing guidelines. Choice B, 750 mg, is incorrect as it does not match the calculated daily dose. Choice C, 500 mg, is incorrect as it represents the safest dose for each administration, not the total daily dose. Choice D, 250 mg, is incorrect as it is below the calculated daily dose required for the child.

Correct Answer: A

Rationale: Squatting increases systemic vascular resistance, which leads to a reduction in the right-to-left shunting of blood in children with tetralogy of Fallot. This helps improve oxygenation by balancing the pulmonary and systemic blood flow. The squatting position decreases the pressure in the right ventricle and reduces the magnitude of the right-to-left shunt by increasing afterload, thereby improving oxygenation. Choices B, C, and D are incorrect because squatting does not decrease arterial blood flow away from the heart, is not related to being tachycardic, and does not increase the workload of the heart.

Correct Answer: D

Rationale: Enteric fever, caused by Salmonella typhi or paratyphi, is characterized by a continuous fever pattern. The fever typically persists without significant fluctuations, distinguishing it from diseases with intermittent or relapsing fever patterns. Pel-Ebstein fever, a cyclic pattern of fever seen in Hodgkin's lymphoma, is not associated with enteric fever. Relapsing fever is a characteristic of diseases like Borrelia recurrentis infection. Intermittent fever is seen in conditions like malaria.

Correct Answer: C

Rationale: Encouraging the child to play with safe medical equipment is the most appropriate technique to reduce stress for a hospitalized child. This technique helps familiarize the child with medical equipment in a non-threatening way, empowering them to feel more in control of the environment. Options A, B, and D may be helpful but do not directly address the child's exposure and interaction with the hospital environment, making them less effective in reducing stress in this context.

Correct Answer: C

Rationale: Typhoid fever is primarily spread through contaminated food and water, usually due to poor sanitation practices. The bacteria responsible for typhoid fever, Salmonella Typhi, is typically found in food or water contaminated by the feces of an infected person. Contaminated air is not a significant mode of transmission for typhoid fever, making choice A incorrect. While waterborne transmission can occur, it is through contaminated water rather than specifically mineral water, making choice B incorrect. Therefore, the correct answer is C, as contaminated food and water are the main sources of transmission for typhoid fever.