The legacy of Prof. Constantin Arseni. The medical architect behind the Romanian School of Neurosurgery.

The personality of Prof. Dr. Constantin Arseni (1912-1994) is without any doubt a key point in any discussion regarding the history of the Romanian School of Neurosurgery.

Chronobiologically Interpreted Ambulatory Blood Pressure Monitoring in Health and Disease.

To detect vascular variability anomalies (VVAs), a blood pressure and heart rate profile around the clock for at least 7 days is a start. As a minimum, measurement every 60 or preferably 30 minutes for a week is needed, to be continued if abnormality is found, to assess the about 24-hour (circadian) variability that exists in all individuals. As a first dividend, one then also obtains a glimpse of 2 of the very many longer-than-circadian periodicities, the biological half-week and week.