They occur in the acute phase of impending catastrophic intracranial pressure waves with herniation and are a very poor prognostic sign.
From a Darwinian perspective, tumors with the most diverse allele frequencies will have the highest probability of surviving a catastrophic selection pressure such as a cytotoxic agent or targeted therapy [ 89, 90].
"The issue for Russian banks and the market in general is not catastrophic, but macroeconomic pressure will increase, as will growth of inflation and of cost of credit".
During the last couple of decades, lots of researches on structural integrity assessment and leak rate estimation have been carried out to prevent unanticipated catastrophic failures of pressure retaining nuclear components.
In late 1979, as the crisis turned catastrophic, Carter came under pressure from his Democratic rival, Senator Edward Kennedy, and he sent his wife to the chaotic border camps.
By late this afternoon, televised reports said that Mr. Obuchi, 62, was breathing only with the assistance of a respirator, and that he had been given drugs to reverse a catastrophic drop in blood pressure.
"It would have caused a catastrophic drop in blood pressure and an increasing fight to breathe".
Collapse is initially local but can propagate at a relatively low pressure with catastrophic results.
The early control of catastrophic external haemorrhage with pressure dressings, haemostatic agents or tourniquets, combined with the traditional primary survey and damage control resuscitation, is rapidly becoming a standard of care [ 25, 26].
But electoral politics, economic pressures and catastrophic events have overwhelmed the chances for bipartisan agreement.
