In video that went viral on social media on Monday, Mana is seen giving heart massage to the creature as colleagues a few metres away treated the dazed and injured motorcyclist in the eastern Thailand province of Chanthaburi.
The elephant stood up groggily after about 10 minutes and was taken to another location for treatment.
"It's my instinct to save lives, but I was worried the whole time because I can hear the mother and other elephants calling for the baby," Mana told Reuters by phone. "I assumed where an elephant heart would be located based on human theory and a video clip I saw online. When the baby elephant started to move, I almost cried," he said.
Despite having dealt with dozens of road traffic accidents involving humans, Mana said the elephant was the only victim he has successfully revived while performing cardiopulmonary resuscitation (CPR).