A report published in Regional Anesthesia and Pain Medicine found that using regional anesthesia (instead of a general anesthesia) for all the hip and knee arthroplasties performed in the U.S. in 2009 could have saved the equivalent in greenhouse gas emissions of how much coal burned?

500,000 lbs
1 million lbs
2 million lbs
3 million lbs

Congratulations to the August 2020 Winner!

Dr. S.B., Pediatrician from TN