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DOT exam with 100% correct answers 2025
How often is a driver with stage 3 hypertension recertified? a. Every 3 months. 
b. Every 6 months. 
c. Every 12 months. 
d. Every 2 years. correct answersb. Every 6 months. 
 
A driver with a history of stage 3 hypertension may be certified for a maximum of 6 months. 
 
What minimum PaO2 level is necessary if the driver has an ABG due to a chronic respiratory disorder? 
a. 70 mm Hg 
b. 55 mm Hg 
c. 60 mm Hg 
d. 65 mmHg correct answersCorrect answer is "D". To be qualified, the dri...