scholarly journals Slope analysis for the prediction of fluid responsiveness by a stepwise PEEP elevation recruitment maneuver in mechanically ventilated patients

2022 ◽  
Vol 22 (1) ◽  
Author(s):  
Sylvain Vallier ◽  
Jean-Baptiste Bouchet ◽  
Olivier Desebbe ◽  
Camille Francou ◽  
Darren Raphael ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Mechanical Ventilation ◽  
Fluid Responsiveness ◽  
Volume Expansion ◽  
Recruitment Maneuver ◽  
Predict Fluid Responsiveness ◽  
Mechanically Ventilated ◽  
Mechanically Ventilated Patients ◽  
Slope Analysis ◽  
Ventilated Patients

Abstract Objective Assessment of fluid responsiveness is problematic in intensive care unit patients. Lung recruitment maneuvers (LRM) can be used as a functional test to predict fluid responsiveness. We propose a new test to predict fluid responsiveness in mechanically ventilated patients by analyzing the variations in central venous pressure (CVP) and systemic arterial parameters during a prolonged sigh breath LRM without the use of a cardiac output measuring device. Design Prospective observational cohort study. Setting Intensive Care Unit, Saint-Etienne University Central Hospital. Patients Patients under mechanical ventilation, equipped with invasive arterial blood pressure, CVP, pulse contour analysis (PICCO™), requiring volume expansion, with no right ventricular dysfunction. Interventions. None. Measurements and main results CVP, systemic arterial parameters and stroke volume (SV) were recorded during prolonged LRM followed by a 500 mL fluid expansion to asses fluid responsiveness. 25 patients were screened and 18 patients analyzed. 9 patients were responders to volume expansion and 9 were not. Evaluation of hemodynamic parameters suggested the use of a linear regression model. Slopes for systolic arterial pressure, pulse pressure (PP), CVP and SV were all significantly different between responders and non-responders during the pressure increase phase of LRM (STEP-UP) (p = 0.022, p = 0.014, p = 0.006 and p = 0.038, respectively). PP and CVP slopes during STEP-UP were strongly predictive of fluid responsiveness with an AUC of 0.926 (95% CI, 0.78 to 1.00), sensitivity = 100%, specificity = 89% and an AUC = 0.901 (95% CI, 0.76 to 1.00), sensibility = 78%, specificity = 100%, respectively. Combining sensitivity of PP and specificity of CVP, prediction of fluid responsiveness can be achieved with 100% sensitivity and 100% specificity (AUC = 0.96; 95% CI, 0.90 to 1.00). One patient showed inconclusive values using the grey zone approach (5.5%). Conclusions In patients under mechanical ventilation with no right heart dysfunction, the association of PP and CVP slope analysis during a prolonged sigh breath LRM seems to offer a very promising method for prediction of fluid responsiveness without the use and associated cost of a cardiac output measurement device. Trial registration NCT04304521, IRBN902018/CHUSTE. Registered 11 March 2020, Fluid responsiveness predicted by a stepwise PEEP elevation recruitment maneuver in mechanically ventilated patients (STEP-PEEP)

scholarly journals Slope Analysis for the Prediction of Fluid Responsiveness by a Stepwise PEEP Elevation Recruitment Maneuver in Mechanically Ventilated Patients

2020 ◽  
Author(s):  
Sylvain VALLIER ◽  
Jean-Baptiste BOUCHET ◽  
Olivier DESEBBE ◽  
Camille FRANCOU ◽  
Darren RAPHAEL ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Cardiac Output ◽  
Fluid Responsiveness ◽  
Volume Expansion ◽  
Recruitment Maneuver ◽  
Predict Fluid Responsiveness ◽  
Mechanically Ventilated ◽  
Mechanically Ventilated Patients ◽  
Slope Analysis ◽  
Ventilated Patients

Abstract Objective:Assessment of fluid responsiveness is problematic in intensive care unit patients. Lung recruitment maneuvers (LRM) can be used as a functional test to predict fluid responsiveness. We propose a new test to predict fluid responsiveness in mechanically ventilated patients, analyzing the variations of central venous pressure (CVP) and systemic arterial parameters during a prolonged sigh breath LRM without the use of a cardiac output measuring device. Design:Prospective observational cohort study.Setting:Intensive Care Unit, Saint-Etienne University Central Hospital.Patients:Patients under mechanical ventilation, equipped with invasive arterial blood pressure, CVP, pulse contour analysis (PICCOTM), requiring volume expansion, with no right ventricular dysfunction.Interventions:None.Measurements and Main Results:CVP, systemic arterial parameters and stroke volume (SV) were recorded during prolonged LRM followed by a 500mL fluid expansion to asses fluid responsiveness. 25 patients were screened, 18 patients were analyzed. 9 patients were responders to volume expansion and 9 were not. Evaluation of hemodynamics parameters suggested the use of a linear interpolation model. Slopes for systolic aortic pressure, pulse pressure (PP), CVP and SV were all significantly different between responders and non-responders during pressure increase phase of LRM (STEP-UP) (p = 0.022, p = 0.014, p= 0.006 and p = 0.038, respectively). PP and CVP slopes during STEP-UP were strongly predictive of fluid responsiveness with an AUC of 0.926 (95% CI, 0.78 to 1.00), sensitivity = 100%, specificity = 89% and an AUC = 0.901 (95% CI, 0.76 to 1.00), sensibility = 78%, specificity = 100%, respectively. Combining sensitivity of PP and specificity of CVP, fluid responsiveness prediction can be obtained with 100% sensibility and 100% specificity (AUC=0.96; 95% CI, 0.90 to 1.00). 1 patient presented inconclusive values using the grey zone approach (5.5%).Conclusions:In patients under mechanical ventilation with no right cardiac dysfunction, the association of PP and CVP slope analysis during a prolonged sigh breath lung recruitment maneuver seems to offer a very promising method for fluid responsiveness prediction without the use and cost of a cardiac output measurement device.Trial registration: NCT04304521, IRBN902018/CHUSTERegistered 11 March 2020, Fluid responsiveness predicted by a stepwise PEEP elevation recruitment maneuver in mechanically ventilated patients (STEP-PEEP)https://www.clinicaltrials.gov/ct2/show/NCT04304521?term=NCT04304521&cntry=FR&draw=2&rank=1

scholarly journals Slope Analysis for the Prediction of Fluid Responsiveness by a Stepwise PEEP Elevation Recruitment Maneuver in Mechanically Ventilated Patients

2021 ◽  
Author(s):  
Sylvain VALLIER ◽  
Jean-Baptiste BOUCHET ◽  
Olivier DESEBBE ◽  
Camille FRANCOU ◽  
Darren RAPHAEL ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Mechanical Ventilation ◽  
Cardiac Output ◽  
Fluid Responsiveness ◽  
Volume Expansion ◽  
Predict Fluid Responsiveness ◽  
Mechanically Ventilated ◽  
Mechanically Ventilated Patients ◽  
Slope Analysis ◽  
Ventilated Patients

Abstract Objective:Assessment of fluid responsiveness is problematic in intensive care unit patients. Lung recruitment maneuvers (LRM) can be used as a functional test to predict fluid responsiveness. We propose a new test to predict fluid responsiveness in mechanically ventilated patients by analyzing the variations in central venous pressure (CVP) and systemic arterial parameters during a prolonged sigh breath LRM without the use of a cardiac output measuring device. Design:Prospective observational cohort study.Setting:Intensive Care Unit, Saint-Etienne University Central Hospital.Patients:Patients under mechanical ventilation, equipped with invasive arterial blood pressure, CVP, pulse contour analysis (PICCOTM), requiring volume expansion, with no right ventricular dysfunction.Interventions:None.Measurements and Main Results:CVP, systemic arterial parameters and stroke volume (SV) were recorded during prolonged LRM followed by a 500mL fluid expansion to asses fluid responsiveness. 25 patients were screened and 18 patients analyzed. 9 patients were responders to volume expansion and 9 were not. Evaluation of hemodynamic parameters suggested the use of a linear regression model. Slopes for systolic arterial pressure, pulse pressure (PP), CVP and SV were all significantly different between responders and non-responders during the pressure increase phase of LRM (STEP-UP) (p = 0.022, p = 0.014, p= 0.006 and p = 0.038, respectively). PP and CVP slopes during STEP-UP were strongly predictive of fluid responsiveness with an AUC of 0.926 (95% CI, 0.78 to 1.00), sensitivity = 100%, specificity = 89% and an AUC = 0.901 (95% CI, 0.76 to 1.00), sensibility = 78%, specificity = 100%, respectively. Combining sensitivity of PP and specificity of CVP, prediction of fluid responsiveness can be achieved with 100% sensitivity and 100% specificity (AUC=0.96; 95% CI, 0.90 to 1.00). One patient showed inconclusive values using the grey zone approach (5.5%).Conclusions:In patients under mechanical ventilation with no right heart dysfunction, the association of PP and CVP slope analysis during a prolonged sigh breath LRM seems to offer a very promising method for prediction of fluid responsiveness without the use and associated cost of a cardiac output measurement device.

scholarly journals Respiratory Variations in Pulse Oximetry Plethysmographic Waveform Amplitude to Predict Fluid Responsiveness in the Operating Room

2007 ◽  
Vol 106 (6) ◽  
pp. 1105-1111 ◽  
Author(s):  
Maxime Cannesson ◽  
Yassin Attof ◽  
Pascal Rosamel ◽  
Olivier Desebbe ◽  
Pierre Joseph ◽  
...  
Keyword(s):  
Cardiac Index ◽  
General Anesthesia ◽  
Fluid Responsiveness ◽  
Volume Expansion ◽  
Predict Fluid Responsiveness ◽  
Mechanically Ventilated ◽  
Mechanically Ventilated Patients ◽  
Plethysmographic Waveform ◽  
Waveform Amplitude ◽  
Ventilated Patients

Background Respiratory variations in pulse oximetry plethysmographic waveform amplitude (DeltaPOP) are related to respiratory variations in pulse pressure (DeltaPP) and are sensitive to changes in preload. The authors hypothesized that DeltaPOP can predict fluid responsiveness in mechanically ventilated patients during general anesthesia. Methods Twenty-five patients referred for cardiac surgery were studied after induction of general anesthesia. Hemodynamic data (cardiac index, central venous pressure, pulmonary capillary wedge pressure, DeltaPP, and DeltaPOP) were recorded before and after volume expansion (500 ml hetastarch, 6%). Fluid responsiveness was defined as an increase in cardiac index of 15% or greater. Results Volume expansion induced changes in cardiac index (2.0+/-0.4 to 2.3+/-0.5 mmHg; P<0.05), DeltaPP (11+/-7 to 6+/-5%; P<0.05), and DeltaPOP (12+/-9 to 7+/-5%; P<0.05). DeltaPOP and DeltaPP were higher in responders than in nonresponders (17+/-8 vs. 6+/-4 and 14+/-7 vs. 6+/-4%, respectively; P<0.05 for both). A DeltaPOP greater than 13% before volume expansion allowed discrimination between responders and nonresponders with 80% sensitivity and 90% specificity. There was a significant relation between DeltaPOP before volume expansion and percent change in cardiac index after volume expansion (r=0.62; P<0.05). Conclusions DeltaPOP can predict fluid responsiveness noninvasively in mechanically ventilated patients during general anesthesia. This index has potential clinical applications.

scholarly journals Effect of gastric residual volume monitoring on incidence of ventilator-associated pneumonia in mechanically ventilated patients admitted to intensive care unit

2019 ◽  
Vol 36 (1) ◽  
Author(s):  
Elnaz Faramarzi ◽  
Ata Mahmoodpoor ◽  
Hadi Hamishehkar ◽  
Kamran Shadvar ◽  
Afshin Iranpour ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Mechanical Ventilation ◽  
Intensive Care ◽  
Ventilator Associated Pneumonia ◽  
Residual Volume ◽  
Gastric Residual Volume ◽  
Mechanically Ventilated ◽  
Mechanically Ventilated Patients ◽  
Icu Length Of Stay ◽  
Ventilated Patients

Objectives: The value of gastric residual volume (GRV) monitoring in ventilator-associated pneumonia (VAP) has frequently been questioned in the past years. In this trial, the effect of GRV on the frequency of VAP was evaluated in critically ill patients under mechanical ventilation. Methods: This descriptive study was carried out on 150 adult patients admitted to the intensive care unit over a 14-month period, from October 2015 to January 2017. GRV was measured every three hours, and gastric intolerance was defined as GRV>250 cc. The incidence of vomiting and VAP, GRV, length of mechanical ventilation and ICU stay, APACHE II and SOFA scores, and mortality rate were noted. Results: The mean APACHEII and SOFA scores, ICU length of stay, and duration of mechanical ventilation in the GRV>250ml group were significantly higher than in the GRV≤250 ml group (P<0.05). Also, a significantly higher number of patients in the GRV>250ml group experienced infection (62.3%) and vomiting (71.7%) compared with the GRV≤250 group (P<0.01). The highest OR was observed for SOFA score >15 and APACHE II >30, which increased the risk of GVR>250 ml by 10.09 (1.01-99.97) and 8.78 (1.49-51.58), respectively. Moreover, the increase in GVR was found to be higher in the non-survivor than in the survivor group. Conclusion: Increased GRV did not result in increased rates of VAP, ICU length of stay, and mortality. Therefore, the routine measurement of GRV as an important element of the VAP prevention bundle is not recommended in critically ill patients. How to cite this: Faramarzi E, Mahmoodpoor A, Hamishehkar H, Shadvar K, Iranpour A, Sabzevari T, et al. Effect of gastric residual volume monitoring on incidence of ventilator-associated pneumonia in mechanically ventilated patients admitted to intensive care unit. Pak J Med Sci. 2020;36(1):---------. doi: https://doi.org/10.12669/pjms.36.1.1321 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

scholarly journals Effect of gastric residual volume monitoring on incidence of ventilator-associated pneumonia in mechanically ventilated patients admitted to intensive care unit

2019 ◽  
Vol 36 (2) ◽  
Author(s):  
Elnaz Faramarzi ◽  
Ata Mahmoodpoor ◽  
Hadi Hamishehkar ◽  
Kamran Shadvar ◽  
Afshin Iranpour ◽  
...  
Keyword(s):  
Intensive Care Unit ◽  
Mechanical Ventilation ◽  
Intensive Care ◽  
Ventilator Associated Pneumonia ◽  
Residual Volume ◽  
Gastric Residual Volume ◽  
Mechanically Ventilated ◽  
Mechanically Ventilated Patients ◽  
Icu Length Of Stay ◽  
Ventilated Patients

Objectives: The value of gastric residual volume (GRV) monitoring in ventilator-associated pneumonia (VAP) has frequently been questioned in the past years. In this trial, the effect of GRV on the frequency of VAP was evaluated in critically ill patients under mechanical ventilation. Methods: This descriptive study was carried out on 150 adult patients admitted to the intensive care unit over a 14-month period, from October 2015 to January 2017. GRV was measured every three hours, and gastric intolerance was defined as GRV>250 cc. The incidence of vomiting and VAP, GRV, length of mechanical ventilation and ICU stay, APACHE II and SOFA scores, and mortality rate were noted. Results: The mean APACHEII and SOFA scores, ICU length of stay, and duration of mechanical ventilation in the GRV>250ml group were significantly higher than in the GRV≤250 ml group (P<0.05). Also, a significantly higher number of patients in the GRV>250ml group experienced infection (62.3%) and vomiting (71.7%) compared with the GRV≤250 group (P<0.01). The highest OR was observed for SOFA score >15 and APACHE II >30, which increased the risk of GVR>250 ml by 10.09 (1.01-99.97) and 8.78 (1.49-51.58), respectively. Moreover, the increase in GVR was found to be higher in the non-survivor than in the survivor group. Conclusion: Increased GRV did not result in increased rates of VAP, ICU length of stay, and mortality. Therefore, the routine measurement of GRV as an important element of the VAP prevention bundle is not recommended in critically ill patients. doi: https://doi.org/10.12669/pjms.36.2.1321 How to cite this: Faramarzi E, Mahmoodpoor A, Hamishehkar H, Shadvar K, Iranpour A, Sabzevari T, et al. Effect of gastric residual volume monitoring on incidence of ventilator-associated pneumonia in mechanically ventilated patients admitted to intensive care unit. Pak J Med Sci. 2020;36(2):48-53. doi: https://doi.org/10.12669/pjms.36.2.1321 This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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