A client who lives alone is stressed about who will care for his pet while he is hospitalized.
Which type of counseling should the nurse conduct?

Choice A rationale

Capnography does not monitor body temperature, as its primary function is to measure the concentration of carbon dioxide in exhaled air. Body temperature is typically measured using thermometers or specialized probes to assess metabolic activity and thermoregulation. Relying on temperature to detect respiratory depression would be ineffective because changes in thermal status occur much slower than alterations in gas exchange or ventilation status during acute respiratory distress.

Choice B rationale

Capnography is more sensitive because it provides an immediate breath-by-breath assessment of ventilation by measuring end-tidal carbon dioxide levels. Unlike pulse oximetry, which measures oxygen saturation and can remain normal for several minutes even if breathing stops, capnography reflects changes in respiratory rate and depth instantly. This allows clinicians to detect hypoventilation or apnea much earlier than pulse oximetry, which is often delayed by the body's residual oxygen stores.

Choice C rationale

Capnography is not designed to measure blood pressure changes or hemodynamic stability directly. Blood pressure is a measure of the force of blood against arterial walls and is influenced by cardiac output and systemic vascular resistance. While respiratory failure can eventually lead to blood pressure changes due to hypoxia-induced cardiac stress, capnography focuses strictly on the ventilatory component of respiration by analyzing the infrared light absorption of carbon dioxide in the airway.

Choice D rationale

Heart rate is measured via pulse oximetry, electrocardiography, or manual palpation, but not via capnography. Capnography specifically tracks the partial pressure of carbon dioxide. While heart rate may increase or decrease in response to respiratory depression, it is a secondary sign of distress. Capnography remains the gold standard for monitoring the adequacy of ventilation because it identifies the cessation or reduction of airflow before cardiovascular changes or significant oxygen desaturation occurs in the patient.

Choice A rationale

Infants are at risk for various injuries, but their primary causes of accidental death are usually related to suffocation, choking, or falls within the home. While they are vulnerable during motor vehicle accidents if not properly restrained in rear-facing seats, they do not have the highest statistical risk for death in this category compared to older pediatric groups who have more frequent and varied exposure to road traffic environments and risks.

Choice B rationale

Adults face significant risks from motor vehicle accidents, often related to factors like distracted driving, speed, or substance use. However, statistically, the mortality rates for this group are often lower than the younger population when adjusted for exposure. Adults generally have more driving experience and improved impulse control compared to adolescents, which serves as a protective factor against the high-velocity impacts often seen in the most fatal traffic accidents involving younger individuals.

Choice C rationale

Older adults are at an increased risk of death from motor vehicle accidents primarily due to increased frailty and underlying comorbidities, which make them less likely to survive an injury that a younger person might. Their risk is often tied to sensory declines, such as reduced visual acuity or slower reaction times. While their fatality rate per mile driven is high, they do not represent the group with the highest overall accident-related mortality.

Choice D rationale

Children and adolescents, particularly those in the teen years, represent the highest risk group for death from motor vehicle accidents. This is due to a combination of physiological and behavioral factors, including an underdeveloped prefrontal cortex leading to impulsivity, lack of driving experience, and risk-taking behaviors like speeding or not using seatbelts. Motor vehicle crashes are a leading cause of death for this developmental stage, surpassing other forms of unintentional injury or disease.