A Dallas anesthesiologist could spend nearly two centuries in prison after being convicted in federal court Friday for “injecting dangerous drugs into patient IV bags, leading to one death and numerous cardiac emergencies,” the U.S. Attorney’s Office said.

Raynaldo Riviera Ortiz Jr., 60, was charged in the Northern District of Texas in September 2022 for tampering with IV bags used at a local surgical center, a Justice Department news release said. The anesthesiologist was found guilty by a jury after eight days of trial and seven hours of deliberation, according to the release.

Ortiz was found guilty on four counts of tampering with consumer products resulting in serious bodily injury, one count of tampering with a consumer product and five counts of intentional adulteration of a drug, the U.S. Attorney’s Office said.

Ortiz’s crimes even led to the death of a fellow anesthesiologist who was using an IV bag to treat herself for dehydration, according to federal authorities.