- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04118244
A Functional Test to Assess Fluid Status During Lung Protective Ventilation Strategies
Development of a Functional Test to Assess Fluid Status During Lung Protective Ventilation Strategies in the Operating Room.
Dynamic preload indices, such as pulse pressure variation (PPV) and stroke volume variation (SVV) are generally accepted as accurate indicator of fluid responsiveness in mechanically ventilated patients. Because SVV and PPV are generated by the pressure transmitted from the airways to the pleural and pericardial spaces, their reliability is limited in patients receiving low tidal volume (VT) ventilation and in those with a driving pressure lower than 20 cm H2O.
Lung-protective ventilation using low VT with positive end expiratory pressure (PEEP) has recently been demonstrated to significantly improve postoperative outcome, and its application is gradually increasing in surgical patients. However, protective ventilation alters the predictability of dynamic preload indices and thus limits their use in the operating theatre.
Lung recruitment maneuvers (LRMs), used to reopen collapsed lung, and PEEP have been proposed as the key components of lung-protective ventilation strategy. LRM increases intrathoracic pressure, which in turn causes a transient decrease in stroke volume (SV) and arterial pressure; this may depend on preload status. Interestingly, recent study reported that the augmented PPV during LRM using vital capacity maneuver (VCM, continuous positive airway pressure of 30 cm H2O for 10 s) could predict preload responsiveness under open chest condition.
Investigators hypothesized that the augmented PPV and SVV by a stepwise LRM with incremental PEEP could represent a functional test to suggest preload responsiveness and, therefore, predict fluid responsiveness. The aims of the current study were (1) to assess the ability of augmented PPV and SVV during stepwise LRM-induced to predict fluid responsiveness in mechanically ventilated patients in the operating room, (2) to assess the ability of stepwise LRM-induced decrease in SV (ΔSV-LRM) to predict fluid responsiveness.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Locations
-
-
-
Seoul, Korea, Republic of
- Recruiting
- Kangnam Sacred Heart Hospital, Hallym University College of Medicine
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Adult patients receiving laparotomy and lung protective ventilation
Exclusion Criteria:
- preoperative arrhythmia
- Severe bradycardia
- Moderate to severe valvular disease
- left ventricular ejection fraction < 50%
- Poorly controlled hypertension (systolic BP > 160 mmHg)
- Patients with renal insufficiency (creatinine > 1.5 mg/dL)
- Moderate to severe liver disease
- BMI >.30 or < 15 kg/ m2
- preexisting pulmonary disease
- FEV1 < 60% of predicted value
Study Plan
How is the study designed?
Design Details
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
PPV_augmented
Time Frame: During the last 5 second of lung recruitment maneuver
|
augmented pulse pressure variation by lung recruitment maneuver
|
During the last 5 second of lung recruitment maneuver
|
SVV_augmented
Time Frame: During the last 5 second of lung recruitment maneuver
|
augmented stroke volume variation by lung recruitment maneuver
|
During the last 5 second of lung recruitment maneuver
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
ΔSV_LRM
Time Frame: During the last 5 second of lung recruitment maneuver
|
The degree of reduction of stroke volume induced by lung recruitment maneuver
|
During the last 5 second of lung recruitment maneuver
|
ΔETCO2_LRM
Time Frame: During the last 5 second of lung recruitment maneuver
|
The degree of reduction of end tidal CO2 concentration induced by lung recruitment maneuver
|
During the last 5 second of lung recruitment maneuver
|
Collaborators and Investigators
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- 2019-07-004-002
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
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