Which reaction is usually exhibited first by the family of an infant who has died from sudden infant death syndrome (SIDS)?

Choice A rationale

Maintaining strict bed rest for a toddler with pneumonia may lead to adverse effects such as muscle deconditioning and delayed motor skill development. Prolonged immobility can also increase the risk of atelectasis and venous stasis due to reduced pulmonary expansion and impaired circulation. Promoting some level of activity, as tolerated, is crucial for maintaining physiological and psychological well-being.

Choice B rationale

Considering the age of the toddler is critical because their developmental stage dictates their understanding, cooperation, and physical needs. Toddlers have a limited attention span and a strong need for mobility and exploration. Age-appropriate interventions ensure compliance and minimize distress while supporting their recovery from pneumonia.

Choice C rationale

Assessing the developmental level is essential as it provides insight into the toddler's cognitive abilities, gross and fine motor skills, and social-emotional needs. This assessment helps in tailoring interventions, such as play activities, to be both engaging and therapeutic, preventing developmental regression during the period of illness and bed rest.

Choice D rationale

Implementing light play activities promotes psychological well-being and prevents developmental stagnation during bed rest. Play can improve lung expansion by encouraging deeper breaths, which aids in preventing atelectasis. It also provides a form of gentle exercise, maintaining muscle tone and reducing boredom while the toddler recovers from pneumonia.

Choice E rationale

Providing hypnotic medication as ordered is generally not indicated for a toddler with pneumonia unless severe agitation or sleep disturbances significantly impede recovery. Sedation can depress respiratory drive, potentially worsening respiratory compromise in a child with pneumonia by reducing effective coughing and clearance of secretions.

Choice A rationale

There is no specific scientific rationale requiring extra vitamin C supplementation while on isoniazid. Isoniazid can cause pyridoxine (vitamin B6) deficiency, which leads to peripheral neuropathy, due to its chemical structure interfering with pyridoxal phosphate metabolism. Therefore, vitamin B6 supplementation is routinely prescribed to prevent this adverse effect, rather than vitamin C, which is not directly involved in this metabolic pathway.

Choice B rationale

Taking isoniazid with milk or juice is generally discouraged as it can interfere with drug absorption. Isoniazid absorption is optimized in an acidic environment and can be reduced by food, particularly dairy products, which can chelate the drug or alter gastric pH. Therefore, consuming it with milk or juice might decrease its bioavailability, leading to sub-therapeutic drug levels and potentially compromising treatment efficacy against Mycobacterium tuberculosis.

Choice C rationale

Isoniazid absorption is best on an empty stomach because food, especially high-fat meals, can significantly decrease its bioavailability. The presence of food in the stomach can delay gastric emptying and interfere with the dissolution and absorption of the drug from the gastrointestinal tract. Optimal absorption ensures that therapeutic drug concentrations are achieved in the bloodstream, which is crucial for effectively inhibiting bacterial cell wall synthesis in Mycobacterium tuberculosis.

Choice D rationale

Isoniazid is not known to cause permanent staining of contact lenses. This side effect is associated with rifampin, another antituberculosis drug, which can cause reddish-orange discoloration of body fluids, including tears, urine, and sweat, due to its chromophore properties and excretion pathways. Isoniazid's mechanism of action and metabolic breakdown do not produce colored metabolites that would result in such staining.