Effects of High and Low Tidal Volumes on Arterial Oxygenation and Pulmonary Shunt During One-Lung Ventilation
Primary Purpose
Postoperative Lung Injury
Status
Completed
Phase
Not Applicable
Locations
Hungary
Study Type
Interventional
Intervention
high tidal volumes
low tidal volume
Sponsored by
About this trial
This is an interventional basic science trial for Postoperative Lung Injury focused on measuring OLV, one lung ventilation
Eligibility Criteria
Inclusion Criteria:
- ASA I-III patients scheduled for lung resection surgery.
Exclusion Criteria:
- severe cardiovascular disease
- severe alteration of the preoperative pulmonary function, with FEV1 70-120% predicted and FEV1/FVC ≥ 70% predicted considered to be normal.
Sites / Locations
- University of Debrecen, Medical and Health Science CenterDepartment of Anesthesiology and Intensive Care
Arms of the Study
Arm 1
Arm 2
Arm Type
Active Comparator
Active Comparator
Arm Label
high (10 ml/kg) tidal volumes
low tidal volume (5 ml/kg)
Arm Description
Evaluate the influence of low (5 ml/kg) and high (10 ml/kg) tidal volumes on arterial oxygenation and Intrapulmonary shunt during one lung ventilation.
Evaluate the influence of low (5 ml/kg) and high (10 ml/kg) tidal volumes on arterial oxygenation and Intrapulmonary shunt during one lung ventilation.
Outcomes
Primary Outcome Measures
low (5ml/kg) tidal volume on arterial oxygenation
Evaluate the influence of low (5 ml/kg) and high (10 ml/kg) tidal volumes on arterial oxygenation and Intrapulmonary shunt during one lung ventilation.
high (10 ml/kg) tidal volumes on arterial oxygenation
Evaluate the influence of low (5 ml/kg) and high (10 ml/kg) tidal volumes on arterial oxygenation and Intrapulmonary shunt during one lung ventilation.
low (5 ml/kg)tidal volumes on Intrapulmonary shunt
Evaluate the influence of low (5 ml/kg) and high (10 ml/kg) tidal volumes on arterial oxygenation and Intrapulmonary shunt during one lung ventilation.
high (10 ml/kg) tidal volumes on Intrapulmonary shunt
Evaluate the influence of low (5 ml/kg) and high (10 ml/kg) tidal volumes on arterial oxygenation and Intrapulmonary shunt during one lung ventilation.
Secondary Outcome Measures
Full Information
NCT ID
NCT01513018
First Posted
January 16, 2012
Last Updated
January 19, 2012
Sponsor
The Cleveland Clinic
1. Study Identification
Unique Protocol Identification Number
NCT01513018
Brief Title
Effects of High and Low Tidal Volumes on Arterial Oxygenation and Pulmonary Shunt During One-Lung Ventilation
Study Type
Interventional
2. Study Status
Record Verification Date
January 2012
Overall Recruitment Status
Completed
Study Start Date
June 2009 (undefined)
Primary Completion Date
September 2009 (Actual)
Study Completion Date
September 2009 (Actual)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor
Name of the Sponsor
The Cleveland Clinic
4. Oversight
5. Study Description
Brief Summary
The ideal tidal volume (TV) during one-lung ventilation (OLV) remains controversial. High tidal volumes may increase the incidence of postoperative lung injury after thoracic surgery. The investigators thus evaluated the influence of low (5 ml/kg) and high (10 ml/kg) tidal volumes on arterial oxygenation and Intrapulmonary shunt during OLV.
One hundred patients scheduled for thoracic surgery were enrolled. During OLV, patients were randomly assigned to 30 minutes of ventilation with high TV (10 ml/kg with zero end-expiratory pressure (ZEEP)) at a rate of 10 breaths/minute or low tidal volume (5 ml/kg with 5 cm H2O positive end-expiratory pressure (PEEP)) at a rate of 20 breaths/minute. During the subsequent 30 minutes, each patient received the alternative management. Minute volume was thus kept constant during each experimental condition. Arterial blood partial pressures, hemodynamic responses, and ventilatory parameters were recorded. Results are presented as means ± SDs; P < 0.05 was considered statistically significant.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Postoperative Lung Injury
Keywords
OLV, one lung ventilation
7. Study Design
Primary Purpose
Basic Science
Study Phase
Not Applicable
Interventional Study Model
Crossover Assignment
Masking
None (Open Label)
Allocation
Randomized
Enrollment
100 (Actual)
8. Arms, Groups, and Interventions
Arm Title
high (10 ml/kg) tidal volumes
Arm Type
Active Comparator
Arm Description
Evaluate the influence of low (5 ml/kg) and high (10 ml/kg) tidal volumes on arterial oxygenation and Intrapulmonary shunt during one lung ventilation.
Arm Title
low tidal volume (5 ml/kg)
Arm Type
Active Comparator
Arm Description
Evaluate the influence of low (5 ml/kg) and high (10 ml/kg) tidal volumes on arterial oxygenation and Intrapulmonary shunt during one lung ventilation.
Intervention Type
Other
Intervention Name(s)
high tidal volumes
Intervention Description
One-lung ventilation was started at skin incision using a volume-controlled square-wave flow pattern. Patients were randomly assigned to 30 minutes of ventilation with a tidal volume of 10 ml/kg tidal volume without external PEEP and respiratory rate of 10 breaths/minute (n=50) or to a tidal volume of 5 ml/kg with 5 cmH2O PEEP and a respiratory rate of 20 breaths/minute (n=50). Minute volume was thus kept constant during each experimental condition.
Randomization was based on computer-generated codes that were maintained in sequentially numbered sealed opaque envelopes until after induction of anesthesia. During the subsequent 30 minutes of one-lung ventilation, the alternative ventilatory management was used.
Intervention Type
Other
Intervention Name(s)
low tidal volume
Intervention Description
One-lung ventilation was started at skin incision using a volume-controlled square-wave flow pattern. Patients were randomly assigned to 30 minutes of ventilation with a tidal volume of 10 ml/kg tidal volume without external PEEP and respiratory rate of 10 breaths/minute (n=50) or to a tidal volume of 5 ml/kg with 5 cmH2O PEEP and a respiratory rate of 20 breaths/minute (n=50). Minute volume was thus kept constant during each experimental condition.
Randomization was based on computer-generated codes that were maintained in sequentially numbered sealed opaque envelopes until after induction of anesthesia. During the subsequent 30 minutes of one-lung ventilation, the alternative ventilatory management was used.
Primary Outcome Measure Information:
Title
low (5ml/kg) tidal volume on arterial oxygenation
Description
Evaluate the influence of low (5 ml/kg) and high (10 ml/kg) tidal volumes on arterial oxygenation and Intrapulmonary shunt during one lung ventilation.
Time Frame
30 minutes of ventillation
Title
high (10 ml/kg) tidal volumes on arterial oxygenation
Description
Evaluate the influence of low (5 ml/kg) and high (10 ml/kg) tidal volumes on arterial oxygenation and Intrapulmonary shunt during one lung ventilation.
Time Frame
30 minutes of ventillation
Title
low (5 ml/kg)tidal volumes on Intrapulmonary shunt
Description
Evaluate the influence of low (5 ml/kg) and high (10 ml/kg) tidal volumes on arterial oxygenation and Intrapulmonary shunt during one lung ventilation.
Time Frame
30 minutes of ventillation
Title
high (10 ml/kg) tidal volumes on Intrapulmonary shunt
Description
Evaluate the influence of low (5 ml/kg) and high (10 ml/kg) tidal volumes on arterial oxygenation and Intrapulmonary shunt during one lung ventilation.
Time Frame
30 minutes of ventillation
10. Eligibility
Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria:
ASA I-III patients scheduled for lung resection surgery.
Exclusion Criteria:
severe cardiovascular disease
severe alteration of the preoperative pulmonary function, with FEV1 70-120% predicted and FEV1/FVC ≥ 70% predicted considered to be normal.
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Tamás Végh, M.D.
Organizational Affiliation
Klinikum Ludwigshafen
Official's Role
Principal Investigator
Facility Information:
Facility Name
University of Debrecen, Medical and Health Science CenterDepartment of Anesthesiology and Intensive Care
City
Debrecen
ZIP/Postal Code
4032
Country
Hungary
12. IPD Sharing Statement
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Effects of High and Low Tidal Volumes on Arterial Oxygenation and Pulmonary Shunt During One-Lung Ventilation
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