نتایج جستجو برای: maximum heart rate

تعداد نتایج: 1502596  

2012
Zhe Chen Patrick L. Purdon Emery N. Brown Riccardo Barbieri

In recent years, time-varying inhomogeneous point process models have been introduced for assessment of instantaneous heartbeat dynamics as well as specific cardiovascular control mechanisms and hemodynamics. Assessment of the model's statistics is established through the Wiener-Volterra theory and a multivariate autoregressive (AR) structure. A variety of instantaneous cardiovascular metrics, ...

Journal: :iranian journal of radiology 0
ali sarrami-foroushani department of chemical engineering, isfahan university of technology, isfahan, iran mohsen nasr esfahany department of chemical engineering, isfahan university of technology, isfahan, iran; department of chemical engineering, isfahan university of technology, isfahan, iran. tel: +98-3133915631, fax: +98-3113912677 hamidreza saligheh rad medical physics and biomedical engineering, tehran university of medical sciences, tehran, iran kavous firouznia advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran madjid shakiba advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran hossein ghanaati advanced diagnostic and interventional radiology research center (adir), tehran university of medical sciences, tehran, iran

conclusion results reinforced the pivotal role of vascular geometry, with respect to hemodynamics, together with the importance of performing patient-specific cfd analyses, through which the effect of different blood flow conditions on the aneurysm hemodynamics could be evaluated. objectives this study aimed to investigate the effects of variations in heart rate and internal carotid artery (ica...

Journal: :anesthesiology and pain medicine 0
seyed mojtaba marashi department of anesthesiology, dr. shariati hospital, tehran university of medical sciences, tehran, iran saeid soltani-omid department of anesthesiology, dr. shariati hospital, tehran university of medical sciences, tehran, iran sussan soltani mohammadi department of anesthesiology, dr. shariati hospital, tehran university of medical sciences, tehran, iran; corresponding author: sussan soltani mohammadi, department of anesthesiology, dr. shariati hospital, tehran university of medical sciences, north kargar street, ale-ahmad highway, tehran, ir iran. tel: +98-9121226683, fax: +98-2188633039, e-mail: yasaman aghajani department of anesthesiology, dr. shariati hospital, tehran university of medical sciences, tehran, iran ali movafegh department of anesthesiology, dr. shariati hospital, tehran university of medical sciences, tehran, iran

conclusions administration of two different doses of intravenous ondansetron, 6 mg and 12 mg, significantly attenuates spinal induced hypotension, bradycardia and shivering compared to the control saline group. however, the hemodynamic profiles and shivering in experimental groups were not statistically different. results demographic data were not statistically different among groups. hr was st...

Journal: :archives of cardiovascular imaging 0
timothy roche division of cardiology, department of medicine, university of ottawa heart institute, ottawa, canada tyler kaster division of cardiology, department of medicine, university of ottawa heart institute, ottawa, canada rachel green division of cardiology, department of medicine, university of ottawa heart institute, ottawa, canada yeung yam division of cardiology, department of medicine, university of ottawa heart institute, ottawa, canada benjamin jw chow division of cardiology, department of medicine, university of ottawa heart institute, ottawa, canada; department of radiology, university of ottawa, ottawa, canada; division of cardiology, department of medicine, university of ottawa heart institute, ottawa, canada, tel: +1-6137614044, fax: +1-6137614929

conclusions compared to iohexol and iopamidol, iodixanol use was associated with a lower patient perception of heat and lower hr while maintaining similar contrast-to-noise and signal-to-noise ratios. results baseline hr was similar across the patients assigned to iohexol, iopamidol, and iodixanol (65.3 ± 9.7, 66.9 ± 10.9, and 65.3 ± 13.3, respectively; p = ns). compared to iohexol and iopamido...

Journal: :Kathmandu University medical journal 2012
A Bandyopadhyay R Dalui

BACKGROUND Alteration in physical work capacity of females during different phases of menstrual cycle has been reported in different populations. Pertinent data is unavailable in Eastern Indian population. OBJECTIVES The present study was aimed to determine the endurance capacity and cardiorespiratory responses during different phases of menstrual cycle in young sedentary females of Eastern r...

2015
Po-Hsiang Lai Insoo Kim

The challenge of heart rate monitoring based on wrist photoplethysmography (PPG) during heavy exercise is addressed. PPG is susceptible to motion artefacts, which have to be mitigated for accurate heart rate estimation. Motion artefacts are particularly apparent for wrist devices, for example, a smart watch, because of the high mobility of the arms. Proposed is a low complexity highly accurate ...

ژورنال: پژوهش در پزشکی 2012
زالی, علیرضا , عارفیان, نور محمد ,

Abstract Many studies have been conducted on heart rate variability. Variability in the heart signal of two sequential beats is called heart rate variability (HRV). Short- and long- term variability reflects autonomic nervous system function, so that increased or decreased heart rate variability (HRV) is an indicator of human health. So, the analysis of these changes can predict sudden death...

ژورنال: پژوهش در پزشکی 2012
زالی, علیرضا , عارفیان, نور محمد ,

Abstract Many studies have been conducted on heart rate variability. Variability in the heart signal of two sequential beats is called heart rate variability (HRV). Short- and long- term variability reflects autonomic nervous system function, so that increased or decreased heart rate variability (HRV) is an indicator of human health. So, the analysis of these changes can predict sudden death...

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