in this paper, a multi-period and multi-resource operating room (or) scheduling and rescheduling problem with elective and semi-elective (semi-urgent) patients is addressed. a scheduling-rescheduling framework based on the so-called rolling horizon approach is proposed to solve the problem. the core of the proposed framework is a novel proposed mixed-integer linear programming (milp) model with...

In this paper, a multi-period and multi-resource operating room (OR) scheduling and rescheduling problem with elective and semi-elective (semi-urgent) patients is addressed. A scheduling-rescheduling framework based on the so-called rolling horizon approach is proposed to solve the problem. The core of the proposed framework is a novel proposed mixed-integer linear programming (MILP) model with...

This paper investigates the trade-off between cancellations of elective surgeries due to semi-urgent surgeries, and unused operating room (OR) time due to excessive reservation of OR time for semi-urgent surgeries. Semi-urgent surgeries, to be performed soon but not necessarily today, pose an uncertain demand on available hospital resources, and interfere with the planning of elective patients....

BACKGROUND Despite universal health care, there continues to be regional access disparities to coronary angiography in Canada. Our objective was to evaluate the extent to which demand-side factors such as clinical urgency/need, and supply-side factors, as reflected by differences in physician and procedural supply account for these inequalities. METHODS Our cohort consisted of 74,254 consecut...

OBJECTIVE To demonstrate the recent trends of admission and surgical management for diverticulitis in the United States. DESIGN Retrospective database analysis. SETTING The National Inpatient Sample database. PATIENTS Patients admitted to the hospital for diverticulitis from 2002 to 2007. MAIN OUTCOME MEASURES Patient characteristics, surgical approach, and mortality were evaluated for ...

BACKGROUND Urgent or emergent status is often associated with increased risk among cardiac operations. The objective of this study was to analyze outcomes and cost differences in patients undergoing elective versus urgent or emergent mitral valve replacement (MVR) and repair operations. METHODS From 2003 to 2008, 1,477 patients underwent isolated, primary mitral valve (MV) operations at 11 di...

BACKGROUND Outcomes and resource utilization of patients undergoing mitral valve replacement (MVR) with or without concomitant coronary artery bypass grafting (CABG) were reviewed. METHODS Data for 1,844 patients undergoing isolated primary MVR at Emory University Hospitals between 1980 and 1997 were recorded prospectively in a computerized database. RESULTS The four groups included patient...

background the optimal management of hemodynamically stable asymptomatic patients with anterior abdominal stab wounds (aasws) remains controversial. the goal is to identify and treat injuries in a safe cost-effective manner. common evaluation strategies are local wound exploration (lwe), diagnostic peritoneal lavage (dpl), serial clinical assessment (scas) and computed tomography (ct) imaging. ...