A patient developed acute, severe hemodynamic deterioration five days after an aortic valve replacement. Cardiac catheterization revealed a markedly elevated right atrial pressure but a normal right ventricular end-diastolic pressure. Angiography revealed an extrinsic mass causing compression of the right atrium and the tricuspid anulus. A large clot overlying the right atrium and ventricle was...

To augment venous blood flow at Doppler ultrasonography (US) of the extremities, a device comprising a blood pressure cuff connected to an external reservoir was tested. Constant and easily controlled pressure was delivered with each compression by the same operator performing US. In 10 patients (four men and six women, aged 54-86 years), discomfort was reduced compared with discomfort during m...

Compression therapy, a well-recognized treatment for lymphoedema and venous disorders, pressurizes limbs and generates massive non-noxious afferent sensory barrages. The aim of this study was to study whether such afferent activity has an analgesic effect when applied on the lower limbs, hypothesizing that larger compression areas will induce stronger analgesic effects, and whether this effect ...

AIM Leg compression bandaging is the mainstay of venous ulcer treatment, yet little is known about the impact of therapeutic compression levels on arterial haemodynamics. In this study, the effect of foot-to-knee, four-layer compression bandaging on below-knee arterial pulsatile blood flow was assessed by nuclear magnetic resonance flowmetry. METHODS In 14 healthy supine subjects, bilateral p...

Keloid is cutaneous lesion characterized by fibrous growth produced as a result of aberration in the healing process. Pressure therapy, in combination with other forms of therapy, is used for the management of keloids. Clips or stents are generally used for the therapy and prophylaxis. This report presents use of presurgical compression and prophylactic passive pressure therapy with acrylic app...

operating an engine with homogeneous charge compression ignition (hcci) technique is a promising technique to lower nox and pm emissions of engines while achieving high efficiency and lower fuel consumption. nevertheless, applications for hcci are still limited due to the absence of a definite means to control ignition timing and narrow operating region. a single cylinder diesel engine with com...

The effect of compressional force on the crystallinity of low crystallinity cellulose (LCPC), microcrystalline celluloses (Avicel PH-101, PH-102 and PH-302 grades) and powdered cellulose (Solka Floc BW-100) has been investigated using an X-ray diffraction method. Microcrystalline and powdered celluloses showed an increase of about 10% in their crystallinities, compared to the values for the cor...

This thesis presents an experimental study of neutral particle dynamics in Alcator C-Mod a high powerand particle-density tokamak with an advanced poloidal divertor. The primary diagnostic used in the study is a set of six neutral pressure gauges, including special-purpose gauges built for in situ tokamak operation. While a low main chamber neutral pressure coincides with high plasma confinemen...

in this study, an in-house multi-dimensional code has been developed which simulates the combustion of n-heptane in a homogeneous charge compression ignition (hcci) engine. it couples the flow field computations with detailed chemical kinetic scheme which involves the multi-reactions equations. a chemical kinetic scheme solver has been developed and coupled for solving the chemical reactions an...