9.sulfur dioxide

Question 1

etiology of so2 poisoning

Answer 1

1. fuel combustion
2. oil refining
3. volcanic activity
4. preservatives of fruits/vegetables

Question 2

pathogenesis of so2 poisoning

Answer 2

Upon inhalation, sulfur dioxide reacts with water in the mucosa of the respiratory tract to form sulfurous acid (H2SO3),
which is highly soluble in water and efficiently absorbed in the upper respiratory tract.
Sulfur dioxide exhibits direct irritant properties.

Question 3

clinical manifestation of so2 poisoning

Answer 3

1.ocular: irritation and lacrimation, corneal damage
2. dermal: itching, skin rashes
3. respiratory - coughing, sneezing, runny nose
in higher concentration : laryngeal and upper airway edema
with increased airflow resistance

Question 4

diagnosis of so2 poisoning

Answer 4

1. clinical examination: work environmental history and symptoms
2. odor - pungent
3. abgs: respiratory alkalosis
4. sulfite levels in blood
5. CXR

Question 5

treatment of so2 poisoning

Answer 5

1. immediate removal
2. decontamination with water
3. topical application of sodium bicarbonate
4. o2 therapy and bronchodilators

Question 6

medical expertise of so2 poisoning

Answer 6

1.modern technologies to reduce so2 in air
2. protective equipment