Saunders Respiratory Practice

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How often should air exchanges occur in a room for TB patients to prevent infection risk?

3 times per hour
6 times per hour
8 times per hour
10 times per hour

The correct answer is: 6 times per hour

For patients with tuberculosis (TB), maintaining appropriate air exchanges in the room is crucial to minimize the risk of airborne transmission of the bacteria. The recommended standard for air exchanges is typically around 6 times per hour. This frequency ensures that the air in the room is sufficiently refreshed to dilute and remove potential infectious particles that can be present in the air due to coughing or sneezing. Having an air exchange rate of this level helps to maintain a safe environment for both the patient and healthcare providers. It significantly reduces the concentration of airborne pathogens, thereby lowering the likelihood of spreading the infection to others in the vicinity. Higher air exchange rates might be more effective in theoretical terms; however, 6 times per hour is a widely accepted standard within healthcare settings designated for managing TB patients. This practice, along with additional infection control measures, aids in mitigating the transmission risk associated with airborne illnesses like TB.