In view of the worst possible outcome - that the clot would move to the lungs and cause respiratory collapse - observation and bed rest seemed essential.

His son, Stephen, said the cause was respiratory collapse.

Respiratory infection in humans initially presents with cold or flu-like symptoms for several days, followed by severe (and often fatal) respiratory collapse.

Within two hours he had begun to vomit and was heading for respiratory collapse.

He had been hospitalized since September with throat cancer and died of respiratory and cardiac collapse, a spokeswoman for the royal family said.

Due to high potency, the ingestion of seemingly small doses can easily result in respiratory collapse and death.

When Mr Graf finally missed, Solly was white-haired; on the verge of respiratory collapse.

Suddenly all the damning symptoms he had cata- loged fell into place: respiratory collapse, convulsions, her constricted pupils, and finally, complete heart failure.

They may be relatively asymptomatic until hemodynamic and respiratory collapse is imminent.

Symptoms of a bite from these snakes include nausea and internal bleeding, and one could die from a brain hemorrhage and respiratory collapse.