- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01109355
Positive and Expiratory Pressure and Hemorrhagic Stroke
April 22, 2010 updated by: Universidade Federal de Pernambuco
Effect of Positive End Expiratory Pressure on Cerebral Perfusion Pressure in Adult Patients With Hemorrhagic Stroke
Intrathoracic positive pressure may lead to a change hemodynamics, with repercussions for the intracranial compartment, thereby altering intracranial pressure (ICP) and cerebral perfusion pressure (CPP).
This effect may become more intense when using high positive end expiratory pressure (PEEP) values.
The aim of the present study was to measure the impact of different PEEP values on ICP, CPP and mean arterial pressure (MAP).
MAP, whereas high PEEP values increase ICP, although without clinical relevance.
Study Overview
Status
Completed
Conditions
Intervention / Treatment
Detailed Description
This study is a prospective clinical trial, developed in the neurological intensive care unit approved by the ethics committee and research in humans.
The charge of each patient had information about the study through the completion of informed consent and signed him when he agreed.
Were the following inclusion criteria: adult patients with acute CVA and presence of ventricular drainage catheter for invasive monitoring of ICP and without intracranial hypertension.
Were adopted as exclusion criteria: increased intracranial pressure, hemodynamic instability as a criterion of loss was used to expressions of interest in charge to leave.
All patients completed the study.
All patients were from the surgical implantation of the ventricular catheter, arriving to the ICU intubated orally and manually ventilated with an Ambu bag. Were subjected to routine procedures: adjusting the mechanical ventilator (Inter5, Intermed, BR) during assisted controlled cycled pressure and facility to monitor vital signs. After thirty minutes of stable ICU patient in a supine position with head elevated 30 °, the protocol was initiated to assess the impact of PEEP on ICP. To perform the evaluation of lung mechanics ventilatory mode was changed to control volume with the following parameters: tidal volume (Vt) = 8ml/kg weight, peak flow (PF) = 6 x minute volume, fraction of inspired O2 (FiO2) = 40%, respiratory rate (RR) = 16 bpm, sensitivity = 1 cmH2O. The following variables were monitored: PIC, Blood Pressure (BP), heart rate (HR), peak pressure in the airways (pp.) and plateau pressure of the respiratory system (Ppl.), these values were monitored with PEEP = 5 cmH2O.
During the assessment protocol was changed to pressure control ventilation mode with the following values of ventilatory parameters: Pp = 30 cm H2O, inspiratory time = 1s; FiO2 = 40%, RR = 16 bpm; Sensitivity = 1 cmH2O. PEEP employed ranged from 0 to 14 cmH2O. To eliminate a possible physiological accommodation by the progressive increase of PEEP, the range of values was determined by drawing a sealed envelope for each patient, ranging from 2 to 2 cmH2O. At each value of PEEP the patient was ventilated for a period of five minutes to carry out monitoring of ICP, BP, HR, PPC and peripheral oxygen saturation (SpO2). The ICP monitoring catheter was kept closed for drainage and open for monitoring, since the arrival of the surgical block, was only open for drainage if there was an increase in ICP above 20 mmHg.
The monitoring was carried out using the multiparameter monitor (Siemens 7000). For ICP monitoring the ventricular catheter was connected to a pressure transducer and this monitor.
After the parameters evaluated with seven different PEEP values, the ventilatory mode was changed again to control volume again to evaluate pulmonary mechanics with the same initial parameters.
All patients were from the surgical implantation of the ventricular catheter, arriving to the ICU intubated orally and manually ventilated with an Ambu bag. Were subjected to routine procedures: adjusting the mechanical ventilator (Inter5, Intermed, BR) during assisted controlled cycled pressure and facility to monitor vital signs. After thirty minutes of stable ICU patient in a supine position with head elevated 30 °, the protocol was initiated to assess the impact of PEEP on ICP. To perform the evaluation of lung mechanics ventilatory mode was changed to control volume with the following parameters: tidal volume (Vt) = 8ml/kg weight, peak flow (PF) = 6 x minute volume, fraction of inspired O2 (FiO2) = 40%, respiratory rate (RR) = 16 bpm, sensitivity = 1 cmH2O. The following variables were monitored: PIC, Blood Pressure (BP), heart rate (HR), peak pressure in the airways (pp.) and plateau pressure of the respiratory system (Ppl.), these values were monitored with PEEP = 5 cmH2O.
During the assessment protocol was changed to pressure control ventilation mode with the following values of ventilatory parameters: Pp = 30 cm H2O, inspiratory time = 1s; FiO2 = 40%, RR = 16 bpm; Sensitivity = 1 cmH2O. PEEP employed ranged from 0 to 14 cmH2O. To eliminate a possible physiological accommodation by the progressive increase of PEEP, the range of values was determined by drawing a sealed envelope for each patient, ranging from 2 to 2 cmH2O. At each value of PEEP the patient was ventilated for a period of five minutes to carry out monitoring of ICP, BP, HR, PPC and peripheral oxygen saturation (SpO2). The ICP monitoring catheter was kept closed for drainage and open for monitoring, since the arrival of the surgical block, was only open for drainage if there was an increase in ICP above 20 mmHg.
The monitoring was carried out using the multiparameter monitor (Siemens 7000). For ICP monitoring the ventricular catheter was connected to a pressure transducer and this monitor.
After the parameters evaluated with seven different PEEP values, the ventilatory mode was changed again to control volume again to evaluate pulmonary mechanics with the same initial parameters.
Study Type
Interventional
Enrollment (Actual)
25
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
-
-
Pernambuco
-
Recife, Pernambuco, Brazil
- Hospital Português
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
42 years to 86 years (Adult, Older Adult)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Description
Inclusion Criteria:
- adult patients with acute CVA
- presence of ventricular drainage catheter for invasive monitoring of ICP
- without intracranial hypertension.
Exclusion Criteria:
- intracranial hypertension
- hemodynamic instability.
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: Double
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
---|---|
Measurement of intracranial pressure
|
The ICP monitoring catheter was kept closed for drainage and open for monitoring, since the arrival of the surgical block, was only open for drainage if there was an increase in ICP above 20 mmHg.
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
---|---|
Effect of different values of PEEP on lung mechanics
|
- Lung compliance:During the assessment protocol was changed to pressure control ventilation mode with the following values of ventilatory parameters: Pp = 30 cm H2O, inspiratory time = 1s; FiO2 = 40%, RR = 16 bpm; Sensitivity = 1 cmH2O.
PEEP employed ranged from 0 to 14 cmH2O.
|
Effect of different PEEP levels on aspects hemodynamic
|
At each value of PEEP the patient was ventilated for a period of five minutes to carry out monitoring of heart rate and cerebral perfusion pressure(CPP).
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Study Chair: Roberto Campelo, Universidade Federal de Pernambuco
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
General Publications
- Pillai S, Praharaj SS, Rao GS, Kolluri VR. Cerebral perfusion pressure management of severe diffuse head injury: effect on brain compliance and intracranial pressure. Neurol India. 2004 Mar;52(1):67-71.
- Mayer SA, Copeland D, Bernardini GL, Boden-Albala B, Lennihan L, Kossoff S, Sacco RL. Cost and outcome of mechanical ventilation for life-threatening stroke. Stroke. 2000 Oct;31(10):2346-53. doi: 10.1161/01.str.31.10.2346.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start
January 1, 2008
Primary Completion (Actual)
July 1, 2008
Study Completion (Actual)
August 1, 2008
Study Registration Dates
First Submitted
April 19, 2010
First Submitted That Met QC Criteria
April 22, 2010
First Posted (Estimate)
April 23, 2010
Study Record Updates
Last Update Posted (Estimate)
April 23, 2010
Last Update Submitted That Met QC Criteria
April 22, 2010
Last Verified
December 1, 2009
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- Berg 01
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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