The child is a 2-year-old who fell into a pool. He was retrieved from the pool by a family member but was not breathing. The family member started CPR, and the ambulance brought him to the hospital.
What factors are important in determining the level of hypoxemia that the child may have experienced during the submersion?

Select all that apply.

A) Correct - Acute dystonic reactions are involuntary muscle spasms caused by certain medications, including antipsychotic drugs. These reactions can sometimes affect the muscles of the face and neck, including the larynx. Benztropine is an anticholinergic medication commonly used to treat acute dystonic reactions. It works by blocking certain neurotransmitters that contribute to muscle spasms, helping to relieve the symptoms.

B) Incorrect - Divalproex is an anticonvulsant medication primarily used to treat epilepsy and bipolar disorder. It is not the appropriate treatment for acute dystonic reactions. These reactions are usually caused by certain antipsychotic medications and are characterized by sudden and involuntary muscle contractions. Divalproex does not have the specific mechanism of action needed to alleviate the symptoms of acute dystonic reactions.
C) Incorrect - Isotonic crystalloid fluids are used for various purposes, such as fluid resuscitation, maintaining hydration, and balancing electrolytes. However, they are not a treatment for acute dystonic reactions. These reactions are neurological and musculoskeletal in nature and require medications with specific anticholinergic properties, like benztropine, to address the underlying issue.
D) Incorrect - Lorazepam is a benzodiazepine commonly used for anxiety, sedation, and seizure control. While it can have a relaxing effect on muscles, it is not the first-line treatment for acute dystonic reactions. Anticholinergic medications like benztropine are more appropriate because they directly counteract the neurotransmitter imbalances that lead to muscle spasms in these reactions.

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 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.