The Winnipeg Intraspinal Pressure Monitoring Study (WISP): A protocol for validation of fiberoptic pressure monitoring for acute traumatic spinal cord injury

Abstract

Background: Research efforts have been focused on limiting secondary injury after traumatic spinal cord injury by performing spinal decompression and early optimization of spinal cord perfusion. The Winnipeg Intraspinal Pressure Monitoring Study (WISP) was designed to validate the technique of intraspinal pressure monitoring at the site of injury using a fiberoptic pressure monitor placed at the site of injury.

Objectives: To describe the design of the WISP study.

Study design: Descriptive.

Methods: We explain the current limitations in the available scientific literature around the topic of blood pressure management for acute traumatic spinal cord injury and rational for the WISP study. Then, we describe the design of WISP including the patient selection criteria, study interventions, follow up schedules and outcome measurements. A multitude of future research avenues are also discussed.

Results: The WISP study is a single center pilot study designed to validate the technique of intraspinal pressure monitoring following acute traumatic spinal cord injury. The study involves the measurement of intraspinal pressure from within the subarachnoid space at the site of injury to derive a number of physiological parameters including spinal cord perfusion pressure, spinal cord blood volume, measures of spinal cord compliance and vascular reactivity indices. Twenty eligible patients will be recruited and followed for a period of 12 months with visits scheduled for the first 5 days and 1, 3, 6, and 12 months following surgical intervention.

Conclusions: The WISP study will provide the first attempt in North America at validation of intraspinal pressure monitoring with a fiberoptic pressure monitor at the site of injury. Successful validation will lead to future studies to define optimal spinal cord perfusion pressure, relationships of neural injury biomarkers and outcomes as well as epigenetic studies.

Trial registration: This study has been registered at clinicaltrials.gov (registration# NCT04550117).

Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1. Fiberoptic monitor (Codman Microsensor Basic Kit, Integra LifeSciences Production Corporation, Mansfield, MA).

Fig 2. SPIRIT schedule of enrolment, interventions, and assessments.

* QLI-SCI III: Quality of Life Index, Spinal Cord Injury Version III. ** Intraspinal Pressure. † Motor Evoked Potential.