A construction worker was impaled on a piece of rebar after falling from scaffolding at an east-side residential construction site around 10:15 Friday morning.

The man fell about 15 feet, said Capt. Grant Cesarek, a Rural/Metro Fire spokesman. The rebar had a protective cover on it and went through his lower back, Cesarek said in a news release.

The 37-year-old man had a "medical emergency" that caused the fall, the news release said.

Before paramedics arrived at the site, near Tanque Verde and Houghton Roads, members of the construction crew lifted the man off the rebar, Cesarek said.

The man was airlifted to University Medical Center.