کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1761518 | 1019651 | 2009 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Arterial Wave Intensity and Ventricular-Arterial Coupling by Vascular Ultrasound: Rationale and Methods for the Automated Analysis of Forwards and Backwards Running Waves
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Arterial Wave Intensity and Ventricular-Arterial Coupling by Vascular Ultrasound: Rationale and Methods for the Automated Analysis of Forwards and Backwards Running Waves Arterial Wave Intensity and Ventricular-Arterial Coupling by Vascular Ultrasound: Rationale and Methods for the Automated Analysis of Forwards and Backwards Running Waves](/preview/png/1761518.png)
چکیده انگلیسی
Wave intensity (WI) in the circulation is estimated noninvasively as the product of instantaneous changes in pressure and velocity. We recorded diameter as a surrogate for pressure, and velocity in the right common carotid artery using an Aloka SSD-5500 ultrasound scanner. We developed automated software, applying the water hammer equation to obtain local wave speed from the slope of a pressure/velocity loop during early systole to separate net WI into individual forwards and backwards-running waves. A quality index was developed to test for noisy data. The timing, duration, peak amplitude and net energy of separated WI components were measured in healthy subjects with a wide age range. Age and arterial stiffness were independent predictors of local wave speed, whereas backwards-travelling waves correlated more strongly with ventricular systolic function than with age-related changes in arterial stiffness. Separated WI offers detailed insight into ventricular-arterial interactions that may be useful for assessing the relative contributions of ventricular and vascular function to wave travel. (E-mail: carlo.palombo@med.unipi.it)
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasound in Medicine & Biology - Volume 35, Issue 2, February 2009, Pages 266-277
Journal: Ultrasound in Medicine & Biology - Volume 35, Issue 2, February 2009, Pages 266-277
نویسندگان
F. Rakebrandt, C. Palombo, J. Swampillai, F. Schön, A. Donald, M. Kozà kovà , K. Kato, A.G. Fraser,