Cerebral Blood Flow (CBF) Disturbances Following Traumatic Brain Injury (TBI) and Subarachnoid Hemorrhage (SAH)

Completed

• Conditions: Subarachnoid Hemorrhage; Traumatic Brain Injury

• Registration Number: NCT00807833
• Lead Sponsor: Azienda Ospedaliera San Gerardo di Monza

Brief Summary

It is a "proof of concept" study, aimed to evaluate whether the "optimal CPP", defined by the best PRx, corresponds to the acceptable CBF values in patients affected by CBF disfunction caused by TBI or SAH.

Detailed Description

Cerebral blood flow (CBF) disturbances are common following TBI and SAH. The occurrence of CBF derangements is detrimental for the neurological outcome in both settings, but the management of neurologically critically ill patients does not involve CBF measure routinely. Cerebrovascular autoregulation, can be assessed by the cerebrovascular pressure-reactivity index (PRx) that point out the response of ICP to spontaneous changes in arterial blood pressure (ABP). Autoregulation has been proven to be a powerful protective mechanism. Adding together the information on CBF and autoregulation, might drive clinical strategy in exceptionally noteworthy and innovative way. Currently, a novel Thermal Diffusion (TDP) microprobe has been introduced for the continuous bedside monitoring of regional CBF: TDP is a promising technique in the reliable detection of flow derangements at the patient's bedside.

It is a "proof of concept" study, aimed to evaluate whether the "optimal CPP", defined by the best PRx, corresponds to the acceptable CBF values.

Patients admitted with the diagnosis of TBI and SAH in for whom ICP and CPP needs to be monitored on clinical ground will be also monitored with a TD probe and routinely tested for cerebral autoregulation, thus obtaining the CBF corresponding at a given the "best CPP" and autoregulation status.

Continuous CBF measures and PRx monitoring may allow more accurate identification and early detection of adverse cerebral conditions. This approach may bring us a step closer to the goal of outcome improvements in patients suffering from intracranial insult.

Study Timeline

• Study First Submitted: 2008-12-11
• Study First Submitted QC: 2008-12-11
• Study First Posted: 2008-12-12
• Study Start: 2009-02
• Primary Completion: 2011-07
• Study Completion: 2011-12
• Status Verified: 2015-08
• Last Update Submitted: 2015-08-17
• Last Update Posted: 2015-08-18

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 20

Inclusion Criteria

Not provided

Exclusion Criteria

Not provided

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
Evaluate the "optimal CPP", defined by PRx, corresponds to the acceptable CBF values	one week

Secondary Outcome Measures

Name	Time	Method
Compare in cohort group PRx/CPP curve to CBFx/CPP curve.The "CBFx" index is defined as the moving correlation between slow waves in CPP and CBF	one week

Trial Locations

Locations (1)

Azienda Ospedaliera San Gerardo; 🇮🇹 Monza, Italy