نتایج جستجو برای: variable stiffness device vsd
تعداد نتایج: 957602 فیلتر نتایج به سال:
BACKGROUND Measurement of the bending stiffness a healing fracture represents a valid variable in the assessment of fracture healing. However, currently available methods typically have high measurement errors, even for mild pin loosening. Furthermore, these methods cannot provide actual values of bending stiffness, which precludes comparisons among individual fractures. Thus, even today, littl...
A 67-year-old man presented at another hospital with an anterior-wall myocardial infarction. He was transferred to our institution after he went into progressive cardiogenic shock and developed a post-myocardial infarction apical ventricular septal defect (VSD). During high-dose inotropic support, his blood pressure was 78/34 mmHg. Cardiac catheterization revealed a pulmonary artery pressure of...
Over a decade after the first successful transcatheter closure of a muscular ventricular septal defect (VSD) back in 1987, the race began to develop a suitable device for transcatheter closure of perimembranous ventricular septal defects (PVSD). With the development of braided Nitinol technology, the first‐generation devices showed early promise, although due to early and late device complicati...
INTRODUCTION Acquired ventricular septal defect (VSD) is uncommon, but serious mechanical complication of acute myocardial infarction with poor outcome and high mortality rate in surgically or medically treated patients. CASE REPORT We report a 58-year-old male patient admitted to our hospital six days following acute inferior myocardial infarction complicated by ventricular septal rupture wi...
In this paper a quaternion-based Variable-State-Dimension Extended Kalman Filter (VSD-EKF) is developed for estimating the three-dimensional orientation of a rigid body using the measurements from an Inertial Measurement Unit (IMU) integrated with a triaxial magnetic sensor. Gyro bias and magnetic disturbances are modeled and compensated by including them in the filter state vector. The VSD-EKF...
BACKGROUND We hypothesized that longitudinal pulmonary arterial deformation during the cardiac cycle reflects pulmonary arterial capacitance. To examine this hypothesis, we assessed whether tissue Doppler-derived pulmonary annular motion could serve as a novel way to evaluate pulmonary arterial capacitance in pediatric patients with ventricular septal defect (VSD). METHODS In this prospective...
From modeling to control of a variable stiffness device based on a cable-driven tensegrity mechanism
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