نتایج جستجو برای: vt

تعداد نتایج: 6535  

Journal: :Respiratory care 2004
Richard H Kallet James A Alonso Jean-François Pittet Michael A Matthay

BACKGROUND The ratio of pulmonary dead space to tidal volume (VD/VT) in acute respiratory distress syndrome (ARDS) is reported to be between 0.35 and 0.55. However, VD/VT has seldom been measured with consideration to the evolving pathophysiology of ARDS. METHODS We made serial VD/VT measurements with 59 patients who required mechanical ventilation for > or = 6 days. We measured VD/VT within ...

Journal: :Journal of the American College of Cardiology 2011
Marc A Miller Srinivas R Dukkipati Alexander J Mittnacht Jason S Chinitz Lynn Belliveau Jacob S Koruth J Anthony Gomes Andre d'Avila Vivek Y Reddy

OBJECTIVES Our goal was to investigate the effects of percutaneous left ventricular assist device (pLVAD) support during catheter ablation of unstable ventricular tachycardia (VT). BACKGROUND Mechanical cardiac support during ablation of unstable VT is being increasingly used, but there is little available information on the potential hemodynamic benefits. METHODS Twenty-three consecutive p...

Journal: :Circulation 1986
C M Pratt A Wierman A A Seals L English C Leon J B Young M A Quinones R Roberts

This was a prospective, placebo-controlled, single-blind trial of moricizine (ethmozine) in a dose averaging 10 mg/kg/day in 50 patients, the single entrance criterion being the presence of 10 or more runs of nonsustained ventricular tachycardia (VT) on a screening 24 hr ambulatory electrocardiographic (ECG) recording. Electrophysiologic study was not included as part of this trial design. The ...

Journal: :The American journal of cardiology 1986
M de Buitleir F Morady L A DiCarlo J M Baerman R B Krol

This prospective study assessed the immediate reproducibility of clinical and nonclinical forms of ventricular tachycardia (VT) induced by programmed ventricular stimulation. Twenty-three clinical VTs were unimorphic and previously documented and 22 nonclinical VTs (17 polymorphic and 5 unimorphic) were induced in patients with either no documented or suspected history of VT, or documented VT t...

Journal: :Brain research 2004
L Plumari S Plateroti P Deviche G C Panzica

The nonapeptide vasotocin (VT) is the avian equivalent of the mammalian antidiuretic hormone vasopressin and is believed to control aggressive and reproductive behaviors. Brain VT distribution has been described in several domesticated avian species. We previously demonstrated that VT distribution in the brain of a free-ranging male passerine, the dark-eyed Junco, Junco hyemalis, resembles that...

2013
Aubrey M. Kelly James L. Goodson

Despite substantial species differences in the vasotocin/vasopressin (VT/VP) circuitry of the medial bed nucleus of the stria terminalis (BSTm) and lateral septum (LS; a primary projection target of BSTm VT/VP cells), functional consequences of this variation are poorly known. Previous experiments in the highly gregarious zebra finch (Estrildidae: Taeniopygia guttata) demonstrate that BSTm VT n...

Journal: :The journal of trauma and acute care surgery 2014
Thomas Blakeman Tyler Britton Dario Rodriquez Richard Branson

BACKGROUND Aeromedical transport of critically ill patients requires continued, accurate performance of equipment at altitude. Changes in barometric pressure can affect the performance of mechanical ventilators calibrated for operation at sea level. Deploying ventilators that can maintain a consistent tidal volume (VT) delivery at various altitudes is imperative for lung protection when transpo...

Journal: :Journal of molecular endocrinology 1999
S Hyodo

To study the ontogeny of the vasotocin (VT) system and its contribution to anuran metamorphosis, VT mRNA levels were determined by Northern blot analysis in metamorphosing bullfrog tadpoles. Effects of osmotic stimulation on VT mRNA levels were also analyzed in order to follow the development of osmotic responsiveness of VT neurons. The intensity of hybridization signals for VT mRNA gradually i...

Journal: :American journal of physiology. Heart and circulatory physiology 2006
Vijay S Chauhan Eugene Downar Kumaraswamy Nanthakumar John D Parker Heather J Ross Wilson Chan Peter Picton

Increased repolarization heterogeneity can provide the substrate for reentrant ventricular arrhythmias in animal models of cardiomyopathy. We hypothesized that ventricular repolarization heterogeneity is also greater in patients with cardiomyopathy and ventricular arrhythmia vulnerability (inducible ventricular tachycardia or positive microvolt T wave alternans, VT/TWA) compared with a similar ...

امکانجو, زهرا, شیرعلی, امیر, فرسویان, علی‌اصغر,

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