This article discusses the physiology of the heart, the causes and pathophysiology of heart failure, and treatment and management options. 1  This article has been double-blind peer reviewed. 2  Figures and tables can be seen in the attached print-friendly PDF file of the complete article.
(redirected from PVR) Also found in: Dictionary, Medical, Acronyms, Wikipedia. in medicine and physiology, a method of continuous graphic recording of variations in the volume of a human or animal organ as modified by the circulation of blood.
Physical vapor deposition (PVD) describes a variety of vacuum deposition methods which can be used to produce thin films. PVD uses physical process (such as heating or sputtering) to produce a vapor of material, which is then deposited on the object which requires coating.PVD is used in the manufacture of items which require thin films for mechanical, chemical or electronic reasons. Evaporative deposition: In which the material to be deposited is heated to a high vapor pressure by electrically resistive heating in low vacuum. 2  Pulsed laser deposition: In which a high-power laser ablates material from the target into a vapor.