Ramiro Sánchez1, Franco Pessana2,3,4, Gabriel Lev5, Micaela Mirada1, Oscar Mendiz6, Agustín Ramírez1,7, Edmundo Cabrera Fischer7. 1. Metabolic Unit and Hypertension Unit, University Hospital, Favaloro Foundation, Buenos Aires, Argentina. 2. IMETTYB Favaloro University-CONICET, Solís 453 (1078), Buenos Aires, Argentina. fpessana@favaloro.edu.ar. 3. Department of Information Technology, Engineering and Exact Sciences Faculty, Favaloro University, Buenos Aires, Argentina. fpessana@favaloro.edu.ar. 4. Electronic Department, Buenos Aires Regional Faculty, National Technological University, Buenos Aires, Argentina. fpessana@favaloro.edu.ar. 5. Electronic Department, Buenos Aires Regional Faculty, National Technological University, Buenos Aires, Argentina. 6. Hemodynamic Department, University Hospital, Favaloro Foundation, Buenos Aires, Argentina. 7. IMETTYB Favaloro University-CONICET, Solís 453 (1078), Buenos Aires, Argentina.
Abstract
INTRODUCTION: Measurement of central (aortic) systolic blood pressure has been shown to provide reliable information to evaluate target organ damage. However, non-invasive central blood pressure measurement procedures are still under analysis. AIM: To compare human pressure waveforms invasively obtained in the aorta, with the corresponding waveforms non-invasively recorded using an oscillometric device (Mobil-O-Graph). METHODS: In this research were included 20 subjects in which invasive percutaneous coronary interventions were performed. They were 10 males (68 ± 12 y. o. , BMI: 27.4 ± 4.6 kg/m2) and 10 females (77 ± 8 y. o. , BMI: 28.5 ± 5.3 kg/m2). During the invasive aortic pressure recording, a synchronized non-invasive Mobil-O-Graph acquisition beat by beat and reconstructed central pressure wave was performed. Both, invasive and non-invasive pressure waves were digitized and stored for subsequent analysis and calculations. A computerized interpolation procedure was developed in our laboratory to compare these pressure waves. RESULTS: A significant correlation between Mobil-O-Graph central blood pressure measurements and the corresponding invasive values was found in males (r < 0.81; p < 0.01) and females (r < 0.93; p < 0.01). However, in both genders, the slope of the regression lines was lesser than 1 (males: y = 0.7354x + 18.998; females: y = 0.9835x + 2.8432). In the whole population (n = 20), a significant correlation between Mobil-O-Graph central blood pressure measurements and the corresponding invasive values was found (r < 0.89; p < 0.01) and the regression line was lesser than 1 (y = 0.9774x + 1.7603). CONCLUSIONS: In this research, a high correlation between invasive central blood pressure values and those measured with the Mobil-O-Graph device was found in males, females and the whole population. However, a sub estimation of Mobil-O-Graph central blood pressure values was observed.
INTRODUCTION: Measurement of central (aortic) systolic blood pressure has been shown to provide reliable information to evaluate target organ damage. However, non-invasive central blood pressure measurement procedures are still under analysis. AIM: To compare human pressure waveforms invasively obtained in the aorta, with the corresponding waveforms non-invasively recorded using an oscillometric device (Mobil-O-Graph). METHODS: In this research were included 20 subjects in which invasive percutaneous coronary interventions were performed. They were 10 males (68 ± 12 y. o. , BMI: 27.4 ± 4.6 kg/m2) and 10 females (77 ± 8 y. o. , BMI: 28.5 ± 5.3 kg/m2). During the invasive aortic pressure recording, a synchronized non-invasive Mobil-O-Graph acquisition beat by beat and reconstructed central pressure wave was performed. Both, invasive and non-invasive pressure waves were digitized and stored for subsequent analysis and calculations. A computerized interpolation procedure was developed in our laboratory to compare these pressure waves. RESULTS: A significant correlation between Mobil-O-Graph central blood pressure measurements and the corresponding invasive values was found in males (r < 0.81; p < 0.01) and females (r < 0.93; p < 0.01). However, in both genders, the slope of the regression lines was lesser than 1 (males: y = 0.7354x + 18.998; females: y = 0.9835x + 2.8432). In the whole population (n = 20), a significant correlation between Mobil-O-Graph central blood pressure measurements and the corresponding invasive values was found (r < 0.89; p < 0.01) and the regression line was lesser than 1 (y = 0.9774x + 1.7603). CONCLUSIONS: In this research, a high correlation between invasive central blood pressure values and those measured with the Mobil-O-Graph device was found in males, females and the whole population. However, a sub estimation of Mobil-O-Graph central blood pressure values was observed.
Entities:
Keywords:
Aortic blood pressure; Aortic central pressure; Mobil-O-Graph; Validation analysis
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