The Midland MP who warned more than 500 hospital patients a week are dying from blood clots has called for urgent Government action to cut the death toll.
Former GP Richard Taylor (Ind Wyre Forest) is a member of the Commons health committee which warned more than 25,000 people were dying from the condition each year - more than from breast cancer, Aids and road accidents combined.
But the condition, called Venous Thromboembolism could be easily prevented by administering cheap drugs.
The MPs found "shocking evidence" that medical staff were not aware of the extent of the problem among surgical patients.
It meant they were failing to take action to protect potential victims, and thousands of people were dying needlessly.
Dr Taylor has now signed an official Commons motion urging the Government to act "to halt the alarmingly high number of deaths from this preventable condition".
He said: "This silent killer leads to over 25,000 deaths in England . . . many of which are preventable by the use of well-established treatments routinely available in the UK."
He warned that "cheap, effective, easy-to-administer drugs" such as heparin, which can dramatically reduce the chances of patients developing a blood clot, were not being used.
Each hospital should also have its own thrombosis team to tackle the problem, he said.
VTE is a condition similar to deep vein thrombosis, which can affect passengers on aeroplanes.
It involves a blood clot which forms in a vein, often causing swelling and pain.
An embolism is created if part or all of the clot breaks off and travels through veins.
If the blood clot lodges in the lung, death will result in 30 per cent of cases without swift treatment.
Hospital patients are at risk because they are immobile during and after surgery.
The Commons health select committee found that a substantial number of patients were affected by VTE after they had been discharged from hospital.
Many deaths were not followed up with a postmortem examination, so the total "is probably underestimated," the MPs said.
They warned: "The figures are alarmingly high. Even more alarming is the fact that many of these deaths are preventable.
"There is a safe, efficacious and cost effective method of preventing venous thrombosis which is not being as widely administered as it should be."