نتایج جستجو برای: rvr

تعداد نتایج: 402  

Journal: :hepatitis monthly 0
alessandro federico department of clinical and experimental medicine, division of hepatogastroenterology, second university of naples, naples, italy; department of clinical and experimental medicine, division of hepatogastroenterology, second university of naples, naples, italy. tel: +39-0815666723, fax: +39-0815666714 mario masarone department of internal medicine and hepatology, internal medicine and hepatology unit, university of salerno, salerno, italy marco romano department of clinical and experimental medicine, division of hepatogastroenterology, second university of naples, naples, italy marcello dallio department of clinical and experimental medicine, division of hepatogastroenterology, second university of naples, naples, italy valerio rosato iv division of internal medicine and hepatology, second university of naples, naples, italy marcello persico department of internal medicine and hepatology, internal medicine and hepatology unit, university of salerno, salerno, italy

conclusions the rvr is the strongest factor of svr and infection with hcv genotype 2 is significantly associated with rvr. neither biochemical and/or metabolic factors seem to exert influence on rvr. objectives the main aim of this study was to assess the strength of rvr, as a predictive factor of antiviral treatment response. patients and methods using univariate and multivariate analysis, we ...

2015
Alessandro Federico Mario Masarone Marco Romano Marcello Dallio Valerio Rosato Marcello Persico

BACKGROUND Standard [i.e. pegylated interferon (Peg-IFN) + ribavirin] treatment of hepatitis C virus (HCV)-related chronic hepatitis is associated with a sustained virological response (SVR) in 50 - 90% of patients. A rapid virological response (RVR) (i.e. negative HCV-RNA after 4 weeks of treatment) predicts SVR in almost 90% of patients. OBJECTIVES The main aim of this study was to assess t...

Journal: :Circulation 1976
P R Foster R M King A B Nicoll D P Zipes

Three groups of dogs were given ouabain (mean 60 mug/kg) until an accelerated ventricular escape (AVE) and repetitive ventricular response (RVR) followed cessation of pacing. In a group of six control dogs, the AVE and RVR were found to occur at stable escape intervals for periods of at least three hours. A second group of dogs received various antiarrhythmic agents in an attempt to suppress th...

2005
Frans Hagemeijer Bernard Lown

After recovery from acetylstrophanthidin-induced ventricular tachycardia, a repetitive ventricular response (RVR) following a single diastolic stimulus could be elicited for 22 minutes. With atrial pacing at the maximum ventricular follow rate, RVR was obtainable for 70 minutes. A pause in pacing also evoked a ventricular ectopic beat; however, this persisted for only 27 minutes. The minimum he...

The uniaxial compressive strength of weak rocks (UCSWR) is among the essential parameters involved for the design of underground excavations, surface and underground mines, foundations in/on rock masses, and oil wells as an input factor of some analytical and empirical methods such as RMR and RMI. The direct standard approaches are difficult, expensive, and time-consuming, especially with highl...

Journal: :Circulation research 1981
P A Johnston D B Bernard N S Perrin L Arbeit W Lieberthal N G Levinsky

Renal perfusion pressure (RPP), total renal blood flow (RBF), and renal vascular resistance (RVR) were comparable in groups of rats placed on high (HS) or low sodium (LS) diets for several weeks (HS, RVR = 16.4 ± 0.6; LS, RVR = 17.4 ± 0.6 mm Hg/ml per min). However, urinary kallikrein excretion was significantly lower in HS (0.31 ± 0.05U/min) than LS rats (0.98 ± 0.09U/min; P< 0.001). Studies r...

Journal: :The Journal of clinical investigation 1978
J A Oliver P J Cannon

The mechanism whereby the vasoconstrictor response to angiotensin II (AII) is influenced by sodium balance or disease is unclear. To explore this question, the renal vascular responses (RVR) to intrarenal injections of subpressor doses of AII and norepinephrine were studied in dogs with an electromagnetic flowmeter. Acute and chronic sodium depletion increased plasma renin activity (PRA) and bl...

Journal: :Circulation research 1970
F Hajemeijer B Lown

After recovery from acetylstrophanthidin-induced ventricular tachycardia, a repetitive ventricular response (RVR) following a single diastolic stimulus could be elicited for 22 minutes. With atrial pacing at the maximum ventricular follow rate, RVR was obtainable for 70 minutes. A pause in pacing also evoked a ventricular ectopic beat; however, this persisted for only 27 minutes. The minimum he...

Journal: :Journal of applied physiology 2005
Andrew D Baines Patrick Ho

Hypothetically either decreased nitric oxide (NO) or increased O(2) could initiate 20-HETE-mediated vasoconstriction associated with hemoglobin-based blood substitutes (HBOC). To test this hypothesis, we infused Tm-Hb, an HBOC with low O(2) affinity, into isoflurane-anesthetized Wistar (W) and Sprague-Dawley (SD) rats after exchanging 20% of their blood with Ringer lactate. For comparison we in...

2013
Akihito Tsubota Tomomi Furihata Yoshihiro Matsumoto Kan Chiba

Direct-acting antivirals (DAAs) in combination with pegylated IFN-a and ribavirin drastically improve the rates of rapid virological response (RVR) and sustained virological response (SVR) in the treatment of chronic hepatitis C virus infection, specifically in difficult-to-cure hepatitis C virus genotype 1. At present, RVR is an important milestone highly predictive of SVR. Response-guided the...

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