Health Risks & Environmental Impact Flashcards

Which mechanism explains why individuals with Allergic Bronchopulmonary Aspergillosis (ABPA) experience progressive lung damage over time?

Answer: Repeated cycles of immune-mediated inflammation and fibrosis in airways

ABPA causes progressive bronchiectasis and fibrosis through repeated hypersensitivity reactions in the airways, not direct fungal tissue invasion in most cases.

A homeowner reports that their basement flood was remediated 3 weeks ago, yet family members continue to experience respiratory symptoms. The MOST likely mold-related explanation is:

Answer: Residual mycotoxins and spore fragments remaining in settled dust and porous materials after incomplete remediation

Incomplete remediation often leaves mycotoxins, spore fragments, and hyphae in settled dust and porous materials that continue to cause symptoms.

Ochratoxin A, produced by Aspergillus and Penicillium species, primarily targets which organ system, making its detection in building environments of particular concern for sensitive individuals?

Answer: Kidneys and urinary tract

Ochratoxin A is a potent nephrotoxin (kidney toxin) that can cause renal tubular damage and has been classified as a possible human carcinogen for renal cell carcinoma.

Which OSHA standard is most directly applicable when workers are performing mold remediation in a building and are exposed to airborne mold spores exceeding safe levels?

Answer: OSHA 29 CFR 1910.134 Respiratory Protection Standard

OSHA 29 CFR 1910.134 governs respiratory protection programs that workers must follow when exposed to airborne biological hazards including mold spores.

Compared to adults, children are considered more vulnerable to mold-related health effects primarily because:

Answer: Children breathe at higher respiratory rates, have developing immune and nervous systems, and spend more time indoors

Children's higher respiratory rates increase spore intake per body weight, and their still-developing immune and neurological systems make them more susceptible to adverse effects.

A physician refers a patient with suspected mold-related illness for environmental testing. As a CMA, which combination of findings would most strongly support a mold-related diagnosis?

Answer: Elevated indoor spore counts of toxigenic species, correlated with patient symptom onset timing and location pattern

A strong mold-illness case requires correlation between elevated toxigenic spore counts, specific species identification, and temporal/spatial pattern of symptom onset.

Which property of mold spores makes them particularly effective at penetrating deep into the alveolar region of human lungs?

Answer: Their small aerodynamic diameter (typically 2–10 µm) allowing deep pulmonary deposition

Mold spores ranging from 2–10 µm in aerodynamic diameter are small enough to bypass upper airway defenses and deposit deep in the alveolar region.