University of Twente Student Theses
Accuracy and precision of stroke volume and left ventricular ejection fraction quantification with handheld echocardiography
Raat, F.M. de (2021) Accuracy and precision of stroke volume and left ventricular ejection fraction quantification with handheld echocardiography.
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| Abstract: | Background: Reliable quantification of stroke volume (SV) and left ventricle ejection fraction (LVEF) for assessment of left ventricle (LV) function is essential for point of care assessment in hemodynamically compromised patients. However, user-independent non-invasive bedside quantification of SV and LVEF is yet not feasible. By incorporating an online quantification tool (LVivo, DIA) in a handheld echocardiography (HHE) device (Lumify, Philips Healthcare) bedside quantification of LV function is among the possibilities. Methods: Thirty-six patients were scanned with HHE, standard echocardiography (SE) and three-dimensional echocardiography (3DE). HHE and SE images were analysed with three different quantification tools: LVivo, Auto Strain (AS) and two-dimensional cardiac perfor-mance analysis (2DCPA). Results: Correlation, bias, and LOA between SE (AS) and HHE (AS) for ejection frac-tion, and SV assessment was r = 0.71, bias = 1.60%, LOA = 8.84% and r = 0.85, bias = 1.32 ml, LOA = 15.54 ml respectively. LVivo (HHE) showed the highest correlation with AS (HHE) (r = 0.89; 0.84; 0.84; 0.69 for EDV, ESV, SV and LVEF, respectively). There was no agreement between any quantification tool or between HHE and SE measurements in comparison to 3DE measurements. Conclusion: Lumify shows great potential for LVEF quantification and monitoring of SV in point of care settings. |
| Item Type: | Essay (Master) |
| Clients: | Philips, Eindhoven, Netherlands |
| Faculty: | TNW: Science and Technology |
| Subject: | 44 medicine, 50 technical science in general |
| Programme: | Technical Medicine MSc (60033) |
| Link to this item: | https://purl.utwente.nl/essays/88695 |
| Export this item as: | BibTeX EndNote HTML Citation Reference Manager |
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