Among the following components of cigarette smoke, which is most directly associated with an increased risk of coronary artery disease?
ATar
BPolycyclic aromatic hydrocarbons
CCarbon monoxide
DNicotine
In a post-Diwali air pollution index chart, an AQI value of 470 was recorded. What level of air pollution does this indicate?
AModerate
BVery poor
CPoor
DSevere
Which of the following laboratory findings is most consistent with a diagnosis of carbon monoxide poisoning?
AIncreased PaCO2 and decreased pH
BDecreased PaO2 with normal oxygen saturation
CNormal PaO2 with decreased oxygen saturation
DDecreased PaCO2 with normal PaO2
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