Congressman Nick Lampson, newly elected to the seat once held by former House Majority Leader Tom DeLay, underwent a procedure Friday to open up a partially blocked blood vessel, his spokeswoman said.

Doctors at Christus St. John Hospital in suburban Houston performed the angioplasty on the 61-year-old Lampson and placed a stent in the vessel.

Lampson was "conscious, alert and in good spirits throughout the procedure," spokeswoman Carrie Chess said in a statement. He was expected to be discharged Saturday.

His wife, Susan Lampson, drove him to the hospital Thursday night because he started feeling sick during dinner. The blockage was found during a test Friday afternoon, Chess said.

Lampson is expected to resume his normal schedule after the holidays, Chess said.

Copyright © 2006 The Associated Press