Revision 25 for 'Posterior reversible encephalopathy syndrome'All Revisions
Posterior reversible encephalopathy syndrome
Posterior reversible encephalopathy syndrome (Pres syndrome), is a neurotoxic state with caracteristical changes at MRI and CT. Recognized in various conditions like eclampsia, BMT , organs transplant, autoimmune disease, arterial blood hypertension, infection and sepsis.
The simptoms can be acute and subacute and include headache, visual changes, paresia, hemianopsia, nausea and altered mental status.
Hypertension is not present or not reach the upper limits to self-regulation ( 150-160 mmHg ) in 25% of patients.
The PRES mechanism remains controversial but there was two main theories:
- High blood pressure leads to