A client is brought to the emergency department by emergency medical responders. Which documented client cues support the suspicion of smoke inhalation injury? Select all that apply.

Smoke inhalation injury results from exposure to toxic gases and thermal injury to the airway during a fire, leading to airway inflammation, hypoxia, and potential respiratory failure. It commonly involves upper airway edema, lower airway irritation, and carbonaceous particle deposition. Clinical cues often reflect both airway compromise and systemic hypoxemia. Early recognition is critical because airway swelling can progress rapidly and lead to obstruction. Rationale: A. Mental status changes such as drowsiness and inappropriate responses indicate cerebral hypoxia. In smoke inhalation, carbon monoxide and hypoxemia reduce oxygen delivery to the brain. Early neurologic changes are often one of the first systemic signs of impaired oxygenation. Altered cognition therefore strongly supports inhalation injury. B. Black particles around the mouth and nares suggest soot inhalation into the upper airway. These carbonaceous deposits indicate exposure to incomplete combustion products. Their presence is a classic external marker of smoke inhalation and airway contamination. This finding strongly correlates with potential tracheobronchial injury. C. Voice changes such as hoarseness suggest laryngeal edema or thermal injury to the upper airway. Smoke exposure can inflame vocal cords, leading to altered phonation. This is an early warning sign of possible airway compromise and impending obstruction. Voice assessment is therefore a key diagnostic cue. D. Abnormal lung sounds including inspiratory and expiratory wheezes reflect lower airway irritation. Toxic smoke particles cause bronchospasm and inflammatory narrowing of the airways. This leads to increased airway resistance and audible wheezing. Such findings are consistent with inhalation injury affecting the bronchi and bronchioles. E. Hygiene status is unrelated to the pathophysiology of smoke inhalation injury. Poor hygiene may be noted incidentally in vulnerable populations but does not indicate airway or pulmonary damage. It does not contribute to diagnostic confirmation of inhalation injury. Therefore, it is not a relevant clinical cue in this context. F. Coughing indicates airway irritation caused by inhaled smoke and particulates. The cough reflex is triggered as the body attempts to clear soot and toxic gases from the respiratory tract. Persistent cough in fire exposure is a common early manifestation of inhalation injury. It supports suspicion of airway involvement. G. Respiratory rate alone is not a specific indicator of smoke inhalation injury. Although tachypnea may occur, it is a nonspecific response to pain, anxiety, or hypoxia. In this case, respiratory rate is only mildly elevated and does not directly confirm inhalation injury. More specific airway findings are needed for diagnosis. H. Burn area distribution does not directly indicate smoke inhalation injury. Cutaneous burns affect the skin and do not confirm airway involvement. Inhalation injury can occur even without extensive external burns. Therefore, burn location is not a reliable diagnostic cue for smoke exposure to the airway. I. Mildly elevated temperature is not a defining feature of smoke inhalation injury. Fever may occur later due to infection or systemic inflammatory response, but it is not an early diagnostic sign. The current temperature is low-grade and nonspecific. It does not strongly support inhalation injury. J. Respiratory pattern showing mild labored breathing suggests increased work of breathing. Smoke inhalation causes airway inflammation and decreased oxygen exchange efficiency. This leads to compensatory respiratory effort to maintain oxygenation. Altered breathing pattern is therefore a significant clinical indicator of inhalation injury.