Correct Answer: A,D,E,F

Rationale:
Choice A: No hypersensitivity to allergens is correct because nonallergic asthma is not triggered by allergen exposure, unlike allergic asthma.
Choice D: Asthma flare-ups with NSAID administration is correct as NSAIDs like aspirin can trigger symptoms in some with nonallergic asthma.
Choice E: Persistence of manifestations is correct since nonallergic asthma symptoms are often persistent without a seasonal pattern.
Choice F: Positive response to corticosteroids is correct as corticosteroids are effective in managing nonallergic asthma.

Correct Answer: A

Rationale: Smoking tobacco is the primary and most significant risk factor for emphysema.
Tobacco smoke contains harmful chemicals and toxins that directly damage the lungs. Chronic exposure to cigarette smoke leads to inflammation and destruction of lung tissue, particularly the alveoli, contributing to the development of emphysema.

Correct Answer: A,C,D,E

Rationale: Decreased visual acuity, polypharmacy, weakness, and chronic hypertension contribute to falls in older adults by impairing vision, causing medication side effects, reducing strength, or causing dizziness.

Correct Answer: B,C,D,E

Rationale: Removing rugs, installing handrails, ensuring lighting, and clearing clutter reduce fall risks by improving safety and visibility.

Correct Answer: A

Rationale: Sterile technique prevents infection in the tracheostomy site.