Final answer:
The question cannot be answered without the specific dosage instructions and medication concentration. Usually, medication dosing is given in weight-based units and must be calculated accordingly with appropriate conversion factors.
Step-by-step explanation:
The student is asking for the volume in milliliters of medication to be administered based on the child's weight and the prescription provided. To provide an appropriate answer, we need specific information about the dosage prescribed according to the weight of the child and any relevant conversion factors that might be necessary to calculate the precise volume.
Without these details, it's impossible to calculate the exact volume of medication that the 4-year-old client should receive. Typically, medication dosing would be provided in units such as milligrams (mg) per kilogram (kg) of body weight, which can then be converted to the appropriate volume based on the concentration of the medication's solution.
Conversion factors such as 1 L = 1000 mL are used to convert volumes between liters and milliliters. As the child weighs 43 lb, this conversion to kilograms would also be necessary for dosing calculations. The kilogram is the standard unit of weight in the medical field, and the conversion factor for pounds to kilograms is 1 kg = 2.20462 lb.