Early Findings on the Use of Clinical Pathways for Management of Unwarranted Variation in Cancer Care.

Clinical pathways have the potential to improve complex clinical decision-making in cancer care. The authors implemented pathways with customized content to assist oncologists to select treatments, aiming for an on-pathway rate of 70%-85%. Treatment decisions were captured as on or off pathway, and metrics were shared monthly with users.

Quality Improvement Training in a Variety of Cancer Care Delivery Settings: Experiences From a Comprehensive Cancer Center, an Academic Medical Center, and Community Practices.

Purpose: Training clinical and supportive staff in quality improvement (QI) theory and use of QI tools has the potential to improve oncology care delivery. We report our combined experience of providing training to oncologists in a variety of local settings and assess the effect of the training on individual participants and for institutions.

Methods: Multidisciplinary oncology teams at a comprehensive cancer center, an academic medical center, and community practices were led through experiential QI training that spanned several months.

Nitric oxide for inhalation in the acute treatment of sickle cell pain crisis: a randomized controlled trial.

Context: Inhaled nitric oxide has shown evidence of efficacy in mouse models of sickle cell disease (SCD), case series of patients with acute chest syndrome, and 2 small placebo-controlled trials for treatment of vaso-occlusive pain crisis (VOC).

Objective: To determine whether inhaled nitric oxide gas reduces the duration of painful crisis in patients with SCD who present to the emergency department or hospital for care.

Design, Setting, And Participants: Prospective, multicenter, double-blind, randomized, placebo-controlled clinical trial for up to 72 hours of inhaled nitric oxide gas vs inhaled nitrogen placebo in 150 participants presenting with VOC of SCD at 11 centers between October 5, 2004, and December 22, 2008.

Sodium nitrite promotes regional blood flow in patients with sickle cell disease: a phase I/II study.

In addition to vaso-occlusion by sickled erythrocytes, the pathophysiology of sickle cell disease (SCD) is compounded by the diminished bioavailability of nitric oxide (NO), associated with vasoconstriction, endothelial activation and cell adhesion. We tested the ability of sodium nitrite, which can be converted to NO by deoxyhaemoglobin at acid pH and low oxygen tension, to improve blood flow in patients with SCD. In a phase I/II clinical trial, sodium nitroprusside, NG-monomethyl-L-arginine, and sodium nitrite were infused sequentially into the brachial artery in 14 patients at steady state.

Nitrite infusion in humans and nonhuman primates: endocrine effects, pharmacokinetics, and tolerance formation.

Background: The recent discovery that nitrite is an intrinsic vasodilator and signaling molecule at near-physiological concentrations has raised the possibility that nitrite contributes to hypoxic vasodilation and to the bioactivity of nitroglycerin and mediates the cardiovascular protective effects of nitrate in the Mediterranean diet. However, important questions of potency, kinetics, mechanism of action, and possible induction of tolerance remain unanswered.

Methods And Results: In the present study, we performed biochemical, physiological, and pharmacological studies using nitrite infusion protocols in 20 normal human volunteers and in nonhuman primates to answer these questions, and we specifically tested 3 proposed mechanisms of bioactivation: reduction to nitric oxide by xanthine oxidoreductase, nonenzymatic disproportionation, and reduction by deoxyhemoglobin.