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Background:Paracentesis for malignant ascites is usually performed as an in-patient procedure, with a median length of stay (LoS) of 3–5 days, with intermittent clamping of the drain due to a perceived risk of hypotension. In this study, we assessed the safety of free drainage and the feasibility and cost-effectiveness of daycase paracentesis.Method:Ovarian cancer admissions at Hammersmith Hospital between July and October 2009 were audited (Stage 1). A total of 21 patients (Stage 2) subsequently underwent paracentesis with free drainage of ascites without intermittent clamping (October 2010–January 2011). Finally, 13 patients (19 paracenteses, Stage 3), were drained as a daycase (May–December 2011).Results:Of 67 patients (Stage 1), 22% of admissions and 18% of bed-days were for paracentesis, with a median LoS of 4 days. In all, 81% of patients (Stage 2) drained completely without hypotension. Of four patients with hypotension, none was tachycardic or symptomatic. Daycase paracentesis achieved complete ascites drainage without complications, or the need for in-patient admission in 94.7% of cases (Stage 3), and cost £954 compared with £1473 for in-patient drainage.Conclusions:Free drainage of malignant ascites is safe. Daycase paracentesis is feasible, cost-effective and reduces hospital admissions, and potentially represents the standard of care for patients with malignant ascites.

The National Clinical Guideline Centre (NCGC) develops evidence-based clinical guidelines on behalf of the National Institute for Health and Clinical Excellence (NICE) in the United Kingdom. The U.K. Department of Health has commissioned NICE to make recommendations on the basis of both clinical effectiveness and cost-effectiveness. This article describes how cost-effectiveness is evaluated and accounted for in NCGC guidelines. Six recent case studies are presented, in which consideration of cost-effectiveness has informed recommendations in various ways for clinical guidelines on alcohol use disorders, chronic obstructive pulmonary disease, glaucoma, lower urinary tract symptoms, non-ST-segment elevation myocardial infarction and unstable angina, and venous thromboembolism prophylaxis. Some of the challenges faced in trying to account for cost-effectiveness in clinical guidelines are outlined, as well as some of the difficulties in adapting cost-effectiveness guidelines for other settings.