Correlation of stroke Volume Measurement between sonosite portable Echocardiogram and Edwards Flotrac sensor-Vigileo Monitor in an Intensive care Unit
Purpose Stroke volume (SV) is a parameter that is being recognized as an endpoint in fluid resuscitation algorithms. Its role is now being realized as an important variable in hemodynamic assessment in various clinical scenarios such as septic and cardiogenic shocks. Direct measurement of stroke vol...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2013-01-01
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| Series: | Clinical Medicine Insights: Circulatory, Respiratory and Pulmonary Medicine |
| Online Access: | https://doi.org/10.4137/CCRPM.S12498 |
| _version_ | 1819289354893262848 |
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| author | Mehrdad Behnia Sherry Powell Linda Fallen Houman Tamaddon Masud Behnia |
| author_facet | Mehrdad Behnia Sherry Powell Linda Fallen Houman Tamaddon Masud Behnia |
| author_sort | Mehrdad Behnia |
| collection | DOAJ |
| description | Purpose Stroke volume (SV) is a parameter that is being recognized as an endpoint in fluid resuscitation algorithms. Its role is now being realized as an important variable in hemodynamic assessment in various clinical scenarios such as septic and cardiogenic shocks. Direct measurement of stroke volume (SV) and its novel corollary, stroke volume variation (SVV) derived by proprietary software, are preferred over mean cardiac output (CO) measurements because they render a more accurate reflection of hemodynamic status independent of heart rate. Flotrac-Vigileo monitor (FTV) (Edwards Lifesciences, Irvine, CA, USA) is a system that uses a complex algorithm analyzing arterial waveform to calculate SV, SVV, and CO. We assessed the feasibility of obtaining SV measurements with a portable echocardiogram and validated its accuracy with the FTV system in mechanically ventilated patients in our intensive care unit (ICU). Furthermore, we emphasized the importance of hemodynamic measurements and familiarity with critical care echocardiography for the intensivists. Methods Ten patients who were on mechanical ventilation were studied. A femoral arterial line was connected to the FTV system monitoring SV and CO. A portable echocardiogram (M-Turbo; Sonosite, Bothell, WA) was used to measure SV. CO was calculated by multiplying SV by heart rate. No patient had arrhythmia. We used biplane Simpson's method of discs to calculate SV in which subtraction of end-systolic volume from end-diastolic volume yields the SV Results The comparison of simultaneous SV and CO measurements by echocardiography with FTV showed a strong correlation between the 2. (For SV, y = 0.9545x + 3.3, R 2 = 0.98 and for CO, y = 0.9104x + 7.7074, R 2 = 0.97). Conclusions In our small cohort, the SV and CO measured by a portable echocardiogram (Sonosite M-Turbo) appears to be closely correlated with their respective values measured by FTV. Portable echocardiography is a reliable noninvasive tool for the hemodynamic assessment of the critically ill. Its results need further validation with gold standard measures in a larger cohort of patients. However, our results suggest portable echocardiography could be an attractive tool in assessment of different hemodynamic scenarios in the critically ill. |
| first_indexed | 2024-12-24T03:05:31Z |
| format | Article |
| id | doaj.art-c1bb94e5e8f240d5b88a6f3cf0bd71ed |
| institution | Directory Open Access Journal |
| issn | 1179-5484 |
| language | English |
| last_indexed | 2024-12-24T03:05:31Z |
| publishDate | 2013-01-01 |
| publisher | SAGE Publishing |
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| series | Clinical Medicine Insights: Circulatory, Respiratory and Pulmonary Medicine |
| spelling | doaj.art-c1bb94e5e8f240d5b88a6f3cf0bd71ed2022-12-21T17:18:02ZengSAGE PublishingClinical Medicine Insights: Circulatory, Respiratory and Pulmonary Medicine1179-54842013-01-01710.4137/CCRPM.S12498Correlation of stroke Volume Measurement between sonosite portable Echocardiogram and Edwards Flotrac sensor-Vigileo Monitor in an Intensive care UnitMehrdad Behnia0Sherry Powell1Linda Fallen2Houman Tamaddon3Masud Behnia4School of Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, Australia.Doctors Hospital, Augusta, GADoctors Hospital, Augusta, GASchool of Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, Australia.School of Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, Australia.Purpose Stroke volume (SV) is a parameter that is being recognized as an endpoint in fluid resuscitation algorithms. Its role is now being realized as an important variable in hemodynamic assessment in various clinical scenarios such as septic and cardiogenic shocks. Direct measurement of stroke volume (SV) and its novel corollary, stroke volume variation (SVV) derived by proprietary software, are preferred over mean cardiac output (CO) measurements because they render a more accurate reflection of hemodynamic status independent of heart rate. Flotrac-Vigileo monitor (FTV) (Edwards Lifesciences, Irvine, CA, USA) is a system that uses a complex algorithm analyzing arterial waveform to calculate SV, SVV, and CO. We assessed the feasibility of obtaining SV measurements with a portable echocardiogram and validated its accuracy with the FTV system in mechanically ventilated patients in our intensive care unit (ICU). Furthermore, we emphasized the importance of hemodynamic measurements and familiarity with critical care echocardiography for the intensivists. Methods Ten patients who were on mechanical ventilation were studied. A femoral arterial line was connected to the FTV system monitoring SV and CO. A portable echocardiogram (M-Turbo; Sonosite, Bothell, WA) was used to measure SV. CO was calculated by multiplying SV by heart rate. No patient had arrhythmia. We used biplane Simpson's method of discs to calculate SV in which subtraction of end-systolic volume from end-diastolic volume yields the SV Results The comparison of simultaneous SV and CO measurements by echocardiography with FTV showed a strong correlation between the 2. (For SV, y = 0.9545x + 3.3, R 2 = 0.98 and for CO, y = 0.9104x + 7.7074, R 2 = 0.97). Conclusions In our small cohort, the SV and CO measured by a portable echocardiogram (Sonosite M-Turbo) appears to be closely correlated with their respective values measured by FTV. Portable echocardiography is a reliable noninvasive tool for the hemodynamic assessment of the critically ill. Its results need further validation with gold standard measures in a larger cohort of patients. However, our results suggest portable echocardiography could be an attractive tool in assessment of different hemodynamic scenarios in the critically ill.https://doi.org/10.4137/CCRPM.S12498 |
| spellingShingle | Mehrdad Behnia Sherry Powell Linda Fallen Houman Tamaddon Masud Behnia Correlation of stroke Volume Measurement between sonosite portable Echocardiogram and Edwards Flotrac sensor-Vigileo Monitor in an Intensive care Unit Clinical Medicine Insights: Circulatory, Respiratory and Pulmonary Medicine |
| title | Correlation of stroke Volume Measurement between sonosite portable Echocardiogram and Edwards Flotrac sensor-Vigileo Monitor in an Intensive care Unit |
| title_full | Correlation of stroke Volume Measurement between sonosite portable Echocardiogram and Edwards Flotrac sensor-Vigileo Monitor in an Intensive care Unit |
| title_fullStr | Correlation of stroke Volume Measurement between sonosite portable Echocardiogram and Edwards Flotrac sensor-Vigileo Monitor in an Intensive care Unit |
| title_full_unstemmed | Correlation of stroke Volume Measurement between sonosite portable Echocardiogram and Edwards Flotrac sensor-Vigileo Monitor in an Intensive care Unit |
| title_short | Correlation of stroke Volume Measurement between sonosite portable Echocardiogram and Edwards Flotrac sensor-Vigileo Monitor in an Intensive care Unit |
| title_sort | correlation of stroke volume measurement between sonosite portable echocardiogram and edwards flotrac sensor vigileo monitor in an intensive care unit |
| url | https://doi.org/10.4137/CCRPM.S12498 |
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