The Baltimore Sun

Anesthesia

Anesthesia was first used around 4200 B.C. in the form of opium poppy capsules. Today, modern anesthesia has allowed vast advances in surgical procedures. However, anesthesia can be dangerous and potentially lethal, and it is the anesthesiologist's job to maintain the delicate chemical balance necessary during surgery. Photo: Christopher Furlong/Getty ImagesChristopher Furlong/Getty Images
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