Abstract 9538: Comparison of Central Aortic Pressures Obtained Using an Invasive Pressure Catheter and the Noninvasive Sphygmocor Device
| العنوان: | Abstract 9538: Comparison of Central Aortic Pressures Obtained Using an Invasive Pressure Catheter and the Noninvasive Sphygmocor Device |
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| المؤلفون: | Cara Esposito, Priscilla Machado, Ira Cohen, Praveen Mehrotra, Michael P Savage, David L Fischman, Marguerite Davis, Nicholas J Ruggiero, Paul Walinsky, Maureen McDonald, Kristopher Dickie, Flemming Forsberg, Jaydev K Dave |
| المصدر: | Circulation. 144 |
| بيانات النشر: | Ovid Technologies (Wolters Kluwer Health), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Physiology (medical), Cardiology and Cardiovascular Medicine |
| الوصف: | Introduction: The SphygmoCor (ATCOR, Naperville, IL) device utilizes a generalized transfer function based on patient’s age and gender to derive the aortic pressure pulse from the brachial-cuff based pressure measurements. This study compared aortic pressures obtained using SphygmoCor with aortic pressures obtained during cardiac catheterization. Hypothesis: Mean differences in aortic pressures obtained using SphygmoCor and pressure catheters will be less than 5 mmHg. Methods: After IRB approval, 136 patients were enrolled. During standard-of-care catheterization procedure, aortic pressure measurements were obtained using fluid-filled catheters. In a subset of patients (n = 13) the aortic pressure values were also obtained using solid-state high-fidelity Millar catheters. Immediately after the catheterization procedure, while the patients were still in the catheterization laboratory (on the procedure table), central aortic pressures were estimated with the SphygmoCor device. The measured and estimated aortic pressures were compared using linear regression and Bland-Altman analysis. A linear fit was performed to derive an additional transfer function to convert SphygmoCor pressure values to catheter-based aortic pressures, and the resulting differences in pressure values were compared. A bootstrap analysis was performed to test the generalizability of this transfer function. Results: Mean differences in systolic, diastolic and pulse aortic pressures obtained using the two techniques ranged from 6.5 to 18.0 mmHg (p < 0.001). In the subset with high-fidelity catheters, the differences ranged from 8.0 to 18.9 mmHg. With the linear-fit transfer function, the differences in systolic, diastolic and pulse aortic pressures were low (< 1 mmHg) corresponding to a reduction in bias noted with Bland-Altman analysis. The bootstrap analysis of the transfer function (100 iterations) achieved a coefficient of variation for the root mean square error < 8.4% for systolic, diastolic and pulse aortic pressures. Conclusions: The magnitude of the differences between the SphygmoCor-estimated and catheter-based systolic, diastolic and pulse aortic pressures reduced considerably after using the linear-fit transfer function derived in this study. |
| تدمد: | 1524-4539 0009-7322 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::2d8709a227507f37dc1b7004ceed6a87 https://doi.org/10.1161/circ.144.suppl_1.9538 |
| رقم الأكسشن: | edsair.doi...........2d8709a227507f37dc1b7004ceed6a87 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15244539 00097322 |
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