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A B Levin

Publications and source records attributed to A B Levin.

49 records · Page 3Linked to original sources
PubMedDate not supplied

The use of a fiberoptic intracranial pressure monitor in clinical practice.

Four years of clinical experience with a fiberoptic intracranial pressure monitor are presented. One hundred forty patients were monitored, of whom 80 had increased intracranial pressure. Of the patients with nontraumatic intracerebral hematoma and subarachnoid hemorrhage, 100% had increased pressure. Forty-seven of 69 patients with head injuries had elevated pressure; of these, 28 had pressure significant enough to require therapy. Both the patients with head injuries and those with nontraumatic hemorrhage were more effectively treated by using the results of pressure monitoring to determine when therapy was required and to indicate the response of the patient to that therapy. Despite the evidence, monitoring of intracranial pressure is not routine due to a lack of acceptance and effectiveness. To overcome such problems, a system must meet the criteria of ease of insertion, reliability, and lack of complications. These criteria are fulfilled by the fiberoptic system presented.

Brain Injuries↗
PubMedDate not supplied

Epidural intracranial pressure monitoring: a new system.

An intracranial pressure (ICP) monitoring system has been developed, consisting of an epidural sensor acting as a pneumatic flow switch connected by tubing to a pneumatic system and microprocessor-based monitoring unit. The frequency response to the system is 8 Hz at 10 mmHg measured peak to peak. ICP and arterial pressure data are collected and maintained in memory. The ICP in memory can be scrolled across a 2-hour or 24-min graphic and digital video display. When memory is not being recalled, the previous 2 hours or 24 min of data are displayed on the screen in graphic form. High and low ICP, low cerebral perfusion pressure, and abnormal pressure waves trigger alarms. Calibration of the system is maintained automatically by periodic rezeroing of all transducers to air. Changes in volume within the pneumatic system indicate a leak, and airflow ceases. The software management and alarm systems, as well as available memory, represent the latest in computerized technology.

Epidural Space↗