Figure 2 - Evolution of brain blood flow (BBF) in three hypothetical cases of intracranial hypertension: influence of hypotension induced by apnea testing at 24-h survival. Whilst BBF is unaffected in case 1, apnea testing hastens and sets the clinical outcome to irreversible brain damage in cases 2 and 3 by inducing collapse of intracranial vessels. For abbreviations see legend to Figure 1.