Surgery Clinical Trial
— OPTIPRONEOfficial title:
Optimal Positive End-expiratory Pressure (PEEP) in Prone Position During Spine Surgery. A Prospective Observational Study
NCT number | NCT04024410 |
Other study ID # | 2018/8270/I |
Secondary ID | |
Status | Completed |
Phase | |
First received | |
Last updated | |
Start date | June 3, 2019 |
Est. completion date | February 22, 2021 |
Verified date | June 2019 |
Source | Parc de Salut Mar |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Observational |
Background: There is a lack of studies regarding Optimal (best) positive end-expiratory pressure (PEEP) in prone position during surgery, and its relation with optimal PEEP in supine position. Hypothesis: In patients undergoing scheduled spinal surgery, optimal PEEP in the prone position is lower than optimal PEEP in the supine position. Aims: To assess the difference optimal PEEP in supine vs. prone positions in patients undergoing spine surgery. To evaluate the changes in optimal PEEP in prone position throughout the surgical procedure. Methods: Observational study, one center. Main variable: optimal PEEP. Secondary variables: PaO2, pCO2 and dynamic compliance (Crd) in prone and supine position.
Status | Completed |
Enrollment | 20 |
Est. completion date | February 22, 2021 |
Est. primary completion date | February 22, 2021 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years and older |
Eligibility | Inclusion Criteria: - Age =18 years. - Spine prone surgery lasting =2 hours. - Absence of known pulmonary pathology. Exclusion Criteria: - Pregnancy or lactation. - Contraindication to alveolar recruitment maneuvers (risk of barotrauma, hemodynamic instability). - Body mass index (BMI) >35. - Heart failure defined as IC <2.5 L/min/m2 and/or inotropic support requirements prior to surgery. - Diagnosis or suspicion of intracranial hypertension (intracranial pressure >15 mmHg). |
Country | Name | City | State |
---|---|---|---|
Spain | Hospital del Mar | Barcelona |
Lead Sponsor | Collaborator |
---|---|
Parc de Salut Mar |
Spain,
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* Note: There are 24 references in all — Click here to view all references
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Positive End-Expiratory Pressure (PEEP) | Positive End-Expiratory Pressure (cmH2O) in supine position | 10 minutes after intubation | |
Primary | Positive End-Expiratory Pressure (PEEP) | Positive End-Expiratory Pressure (cmH2O) in prone position | 10 minutes after positioning | |
Primary | Change in Positive End-Expiratory Pressure (PEEP) | Variation of Positive End-Expiratory Pressure (cmH2O) during surgery in prone position with respect to PEEP value at 10 minutes after positioning | From determination of optimal PEEP until the first hour and then every hour, assessed up to the end of surgery (maximum 6 hours) | |
Secondary | Static compliance | Tidal volume / Plateau pressure ratio (mL/cmH2O) in supine position | 10 minutes after intubation | |
Secondary | Static compliance | Tidal volume / Plateau pressure ratio (mL/cmH2O) in prone position | 10 minutes after positioning | |
Secondary | Change in static compliance | Variation of static compliance (Tidal volume / Plateau pressure ratio, in mL/cmH2O) during surgery in prone position | Measured at the same time as Auto PEEP until the first hour and then every hour, assessed up to the end of surgery (maximum 6 hours) | |
Secondary | Arterial oxygen pressure (PaO2) | Partial pressure of oxygen (mmHg) in supine position | 10 minutes after intubation | |
Secondary | Arterial oxygen pressure (PaO2) | Partial pressure of oxygen (mmHg) in prone position | 10 minutes after positioning | |
Secondary | Change in arterial oxygen pressure (PaO2) | Variation of partial pressure of oxygen (mmHg) during surgery in prone position | Measured at the same time as Auto PEEP until the first hour and then every hour, assessed up to the end of surgery (maximum 6 hours) | |
Secondary | Arterial carbon dioxide pressure (PaCO2) | Partial pressure of carbon dioxide (mmHg) in supine position | 10 minutes after intubation | |
Secondary | Arterial carbon dioxide pressure (PaCO2) | Partial pressure of carbon dioxide (mmHg) in prone position | 10 minutes after positioning | |
Secondary | Change in arterial carbon dioxide pressure (PaCO2) | Variation of partial pressure of carbon dioxide (mmHg) during surgery in prone position | Measured at the same time as Auto PEEP until the first hour and then every hour, assessed up to the end of surgery (maximum 6 hours) |
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