While caring for a client with Guillain-Barre syndrome, which finding should the practical nurse (PN) report to the charge nurse?

The level of hypoxemia that the child may have experienced during the submersion depends on several factors, but the most important ones are:

• The **temperature of water**: Cold water can induce a diving reflex, which lowers the heart rate and oxygen consumption, and may protect the brain from hypoxic injury¹². Cold water can also cause laryngospasm, which prevents water aspiration but also impairs gas exchange.
• The **amount of time the child was submerged**: The longer the submersion, the more severe the hypoxemia and the higher the risk of brain damage and death. The survival rate decreases significantly after 5 minutes of submersion³.

The other factors are less relevant or not directly related to the level of hypoxemia:

• The **weight of the child**: This may affect the buoyancy and the ability to float or swim, but not the oxygen consumption or gas exchange during submersion¹.
• The **oxygen concentration of the ambient air**: This may affect the pre-submersion oxygen saturation, but not the rate of oxygen depletion or gas exchange during submersion¹.
• The **witnessing of the fall into the pool**: This may affect the time to rescue and resuscitation, but not the level of hypoxemia during submersion.

The client may be experiencing postoperative delirium, which is a transient state of confusion, disorientation, agitation, or hallucinations that can occur after surgery, especially in elderly clients. The PN should raise the side rails and notify the family to come and stay with the client, as this can provide safety, comfort, and reassurance for the client.

The other options are not correct because:

A. Administering a prescribed narcotic antagonist may not be appropriate or necessary, as the client's agitation may not be caused by analgesic accumulation, but by other factors such as hypoxia, infection, electrolyte imbalance, or sensory deprivation.

B. Notifying the healthcare provider and requesting a prescription for restraints may not be the best intervention, as restraints can increase the client's agitation, anxiety, or injury. Restraints should be used only as a last resort when other measures have failed or when there is an imminent risk of harm.

D. Instructing a UAP to keep the upper side rails up and check on the client every 15 minutes may not be sufficient or effective, as the client may still try to get out of bed or become more agitated by being left alone. The PN should involve the family or stay with the client until he or she is calm and oriented.