A client receives a prescription for digoxin 0.25 mg by mouth. The medication is available in 0.125 mg tablets. How many tablets should the practical nurse (PN) administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

A. Oxygen Concentration of the Ambient Air
The oxygen concentration of the ambient air affects how much oxygen the child could have been exposed to once retrieved from the pool. If the child was submerged in water, the ability to access oxygen from the environment was compromised, which contributes to the level of hypoxemia experienced. Ambient air oxygen concentration is a crucial factor in determining how long it might take for hypoxemia to develop or improve after submersion.
B. Temperature of Water
The temperature of the water affects the child’s physiology during submersion. Cold water can lead to a more rapid decrease in core body temperature and can influence the child’s respiratory and cardiovascular responses, potentially affecting the degree of hypoxemia.
C. The Weight of the Child
The weight of the child does not significantly impact the level of hypoxemia experienced during submersion. While it might influence the child’s ability to stay afloat or the rescue process, it does not directly affect hypoxemia levels.
D. The Amount of Time the Child Was Submerged
The duration of submersion is a critical factor in determining the level of hypoxemia. Longer submersion times result in more significant oxygen deprivation and a greater degree of hypoxemia, which can impact the severity of respiratory and cardiac complications.
E. Whether or Not Anyone Witnessed the Fall into the Pool
While witnessing the fall might be relevant for understanding the context of the incident, it does not directly affect the level of hypoxemia experienced during the submersion. The key factors are related to the conditions and duration of the submersion itself

A. Sliding hands under the lumbar area and knees can cause strain on the PN’s back and is not the safest method for turning a dependent client.
B. Using a turning sheet to turn the client away from the PN is the safest method for moving a dependent client, as it uses a proper technique that minimizes injury risk for both the client and the PN.
C. Raising bed rails on the opposite side may increase the risk of injury or falls, and is not directly related to the safe turning of the client.
D. Grasping the client's hand to pull them is unsafe and could cause injury or discomfort to both the client and the PN, especially when turning a dependent client.