India's Prime Minister Manmohan Singh resumed work on Thursday after medical tests, but reports blockages were found in his arteries could have negative political effects, coming only months before general elections.
"He is fine and working from home," the prime minister's spokesman said.
His personal physician said the 76-year-old Singh needed more medical intervention for problems with his arteries.
"There are certain treatment procedures that are being looked at, but the final decision will be taken in a few days time," said K.S. Reddy, his personal physician.
"Whenever we are looking at a patient with a coronary artery problem, there are three lines of therapy that are available, medical therapy, angioplasty and stenting and coronary artery bypass graft surgery."
Indian newspapers said several blockages had been found in Singh's heart, requiring an angioplasty or a surgery soon, two days after the leader underwent a series of heart-related medical tests.
A doctor at the All India Institute of Medical Sciences also told Reuters blockages were discovered and a second cardiac bypass surgery could be an option.
"There are blockages, but nothing alarming," said the doctor, who could not be named as he was not authorised to speak to the media. "But he needs more treatment to be declared medically fit."
A new election is due by May this year and Singh is expected to continue as prime minister if the Congress coalition wins.
But any speculation about his health could undermine his re-election campaign, coming just as reports surface that Rahul Gandhi, heir to one of India's most powerful family dynasties, could be his successor.
"If the government does not come out openly on the test findings, there will be more speculations," Kuldip Nayar, a political analyst, said in New Delhi.
"It should not be such a big issue."
Singh underwent bypass surgery in 1990 in the United Kingdom. He also underwent wrist surgery in 2006, a prostate gland surgery and a cataract removal procedure last year, officials said.
Last Mod: 22 Ocak 2009, 14:55