The nurse of a medical-surgical unit receives a report from a post-anesthesia care unit (PACU) nurse for a client who is being transferred following a right hemicolectomy. The PACU nurse reports, "The client has an intravenous (IV) infusion of 1000 mL lactated Ringer's infusing at 125 mL/hr into the left wrist with 300 mL remaining. Prescriptions include morphine sulfate 2 mg IV every 2 to 4 hours for pain, last administered 30 minutes ago; ondansetron 4 mg IV every 8 hours for nausea, last administered 15 minutes ago." Which additional information is most important for the nurse to obtain in the report?

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.

A) Incorrect- Pupillary response is not relevant to the assessment of mesalamine's effectiveness.

Pupillary response is often assessed in neurological or ophthalmic evaluations and is not a direct measure of gastrointestinal function or the response to mesalamine therapy.

B) Incorrect- Peripheral pulses are not directly affected by mesalamine therapy, and monitoring them would not provide insight into the medication's effectiveness. Peripheral pulses are
typically assessed to evaluate the circulatory status and are not specific to the evaluation of gastrointestinal conditions.
C) Correct- Mesalamine is a medication commonly used to treat inflammatory bowel disease (IBD), such as Crohn's disease and ulcerative colitis. It helps to reduce inflammation in the gastrointestinal tract. Monitoring bowel patterns is important to assess the effectiveness of mesalamine in managing the symptoms of these conditions.
D) Incorrect- Oxygen saturation is a measure of the amount of oxygen in the blood and is used to assess respiratory function. While oxygen saturation is important for overall patient assessment, it is not directly related to mesalamine's effectiveness in treating inflammatory bowel disease.