BACKGROUND Ultrasound measurement of dynamic changes in inferior vena cava (IVC) diameter can be used to assess intravascular volume status in critically ill patients, but published studies vary in accuracy as well as recommended diagnostic cutoffs. Part of this variability may be related to movements of the vessel relative to the transducer during the respiratory cycle which results in uninten...

OBJECTIVE Although stasis is important in the pathogenesis of deep vein thrombosis (DVT), how it contributes to thrombogenesis is largely unknown. To gain mechanistic insight, we used a rat model of inferior vena cava (IVC) ligation. METHODS AND RESULTS Rats were subjected to IVC ligation for 15 to 60 minutes. Ligation resulted in rapid IVC dilatation and by 60 minutes, thrombi were detected ...

Duplication of the inferior vena cava( IVC) is only rarely reported and often detected as an incidental finding(0.5-3%). In our patient, anomolous vessel continuation left iliac vein crossing anterior to aorta, joining right IVC at level border L1 vertebra.The association with a prothrombotic state,was exacerbated after splenectomy for this patient who had sickle cell anemia.

Introduction Echocardiography is a non-invasive procedure which enables full assesment of cardiac function. The inferior vena cava (IVC) is a compliant blood vessel, easily distended, especially in cases of hypovolemia. Assessment of the physiologic characteristics of the IVC provides a rapid distinction between low and high volume states and offers the clinician a rapid, noninvasive way to gui...

A prototype in-vessel composting unit, which includes air circulation and misting systems, was designed and built as a senior capstone project at the Bio-Resource Engineering Department at the University of Maine. The university Office of Resource Conservation and Recovery initiated a recycling program for postconsumer food waste generated by the residence hall commons areas in 1991. This food ...

BACKGROUND/AIM A longer period of vessel occlusion reduces the coefficient of variation of the infarct lesion size ['infarct variation coefficient' (IVC)] due to a gradual expansion of the lesion within a limited territory defined by the vascular anatomy, but it increases the mortality rate. A crucial issue in the induction of experimental focal cerebral ischemia has been to achieve a low IVC v...

In this study, co-composting of food waste and green waste at low initial carbon to nitrogen (C/N) ratios was investigated using an in-vessel lab-scale composting reactor. The central composite design (CCD) and response surface method (RSM) were applied to obtain the optimal operating conditions over a range of preselected moisture contents (45-75%) and C/N ratios (13.9-19.6). The results indic...

Assessment of respirophasic diameter fluctuations of the inferior vena cava (IVC) is detrimentally affected by its concomitant displacements. This study aims at presenting and validating a method to compensate for IVC movement artifacts while continuously measuring its diameter in an automated fashion (with minimal interaction with the user) from a longitudinal B-mode ultrasound (US) clip. Perf...