RESUMO
OBJECTIVES: To determine the actual cost and drivers of the cost of an extracorporeal cardiopulmonary resuscitation (E-CPR) care cycle. PERSPECTIVE: A time-driven activity-based costing study conducted from a healthcare provider perspective. SETTING: A quaternary care ICU providing around-the-clock E-CPR service for out-of-hospital cardiac arrest (OHCA) and in-hospital cardiac arrest (IHCA) in Australia. METHODS: The E-CPR care cycle was defined as the time from initiating E-CPR to hospital discharge or death of the patient. Detailed process maps with discrete steps and probabilistic decision nodes accounting for the complex trajectories of E-CPR patients were developed. Data about clinical and nonclinical resources and timing of activities was collected multiple times for each process . Total direct costs were calculated using the time estimates and unit costs per resource for all clinical and nonclinical resources. The total direct costs were combined with indirect costs to obtain the total cost of E-CPR. RESULTS: From 10 E-CPR care cycles observed during the study period, a minimum of 3 observations were obtained per process. The E-CPR care cycle's mean (95% CI) cost was $75,014 ($66,209-83,222). Initiation of extracorporeal membrane oxygenation (ECMO) and ECMO management constituted 18% of costs. The ICU management (35%) and surgical costs (20%) were the primary cost determinants. IHCA had a higher mean (95% CI) cost than OHCA ($87,940 [75,372-100,570] vs. 62,595 [53,994-71,890], p < 0.01), mainly because of the increased survival and ICU length of stay of patients with IHCA. The mean cost for each E-CPR survivor was $129,503 ($112,422-147,224). CONCLUSIONS: Significant costs are associated with E-CPR for refractory cardiac arrest. The cost of E-CPR for IHCA was higher compared with the cost of E-CPR for OHCA. The major determinants of the E-CPR costs were ICU and surgical costs. These data can inform the cost-effectiveness analysis of E-CPR in the future.
Assuntos
Reanimação Cardiopulmonar , Oxigenação por Membrana Extracorpórea , Parada Cardíaca Extra-Hospitalar , Humanos , Reanimação Cardiopulmonar/economia , Oxigenação por Membrana Extracorpórea/economia , Parada Cardíaca Extra-Hospitalar/terapia , Parada Cardíaca Extra-Hospitalar/economia , Parada Cardíaca Extra-Hospitalar/mortalidade , Austrália , Unidades de Terapia Intensiva/economia , Fatores de Tempo , Masculino , Feminino , Pessoa de Meia-Idade , Parada Cardíaca/terapia , Parada Cardíaca/economia , Parada Cardíaca/mortalidade , Custos de Cuidados de Saúde/estatística & dados numéricos , Custos e Análise de CustoRESUMO
OBJECTIVE: To use time driven activity-based costing to characterize the provider cost of rapid MRI for appendicitis compared to other MRI examinations billed with the same Current Procedural Terminology codes commonly used for MRI appendicitis examinations. METHODS: Rapid MRI appendicitis examination was compared with MRI pelvis without intravenous contrast, MRI abdomen/pelvis without intravenous contrast, and MRI abdomen/pelvis with intravenous contrast. Process maps for each examination were created through direct shadowing of patient procedures (n = 20) and feedback from relevant health care professionals. Additional data were collected from the electronic medical record for 327 MRI examinations. Practical capacity cost rates were calculated for personnel, equipment, and facilities. The cost of each step was calculated by multiplying the capacity cost rate with the mean duration of each step. Stepwise costs were summed to generate a total cost for each MRI examination. RESULTS: The mean duration and costs for MRI examination type were as follows: MRI appendicitis: 11 (range: 6-25) min, $20.03 (7.80-44.24); MRI pelvis without intravenous contrast: 55 (29-205) min, $105.99 (64.18-285.13); MRI abdomen/pelvis without intravenous contrast: 65 (26-173) min, $144.83 (61.16-196.50); MRI abdomen/pelvis with intravenous contrast: 128 (39-303) min, $236.99 (102.62-556.54). CONCLUSION: The estimated cost of providing a rapid appendicitis MRI examination is significantly less than other MRI examinations billed using Current Procedural Terminology codes typically used for appendicitis MRI. Mechanisms to appropriately bill rapid MRI examinations with limited sequences are needed to improve cost efficiency for the patient and to enable wider use of limited MRI examinations in the pediatric population.
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Apendicite , Imageamento por Ressonância Magnética , Apendicite/diagnóstico por imagem , Apendicite/economia , Humanos , Imageamento por Ressonância Magnética/economia , Criança , Masculino , Feminino , Custos e Análise de Custo , Custos de Cuidados de Saúde , Meios de Contraste , Estados Unidos , Current Procedural TerminologyRESUMO
Building effective medicine pricing policies is a challenging task in all high-, middle- and low-income countries. In high-income countries have stable health systems in place, trained workforce, as well as specialised agencies to evaluate innovative drugs for reimbursement. However, in low- and middle-income countries (LMICs) the challenges are manifold. A large majority of low- and middle-income countries lack technical expertise either to evaluate new medicines or to set efficient medicine prices. The countries also lack comparator reference pricing data to set prices. Also, there are significant out-of-pocket expenditures as people pay for medicines by themselves. An effective medicine pricing policy is vital in the context that it can be used as a tool to improve access and affordability among the masses. This discussion paper presents a conceptual framework to build effective medicine pricing policies for low and middle-income countries (LMICs). The enablers to build effective medicine pricing policies are also discussed. This includes (a) data and statistics on the pharmaceutical situation of the country (b) Having a national medicine policy in the country (c) The availability of the medicine pricing data and (d) Human resources and technical capacity. WHO has recommended several strategies including External Price Referencing (EPR), Internal Reference pricing, Value-based pricing, Cost-plus pricing, and Generic medicine policies to build a pricing policy. However, this information is generic and it's a complex task for countries to tailor to their needs, hence a critical analysis is provided on these policies. The concepts related to fair medicine pricing, providing information to consumers and price transparency are also discussed.
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Países em Desenvolvimento , Custos de Medicamentos , Política de Saúde , Humanos , Política de Saúde/economia , Custos e Análise de Custo , Preparações Farmacêuticas/economiaRESUMO
OBJECTIVES: To evaluate whether the costs of a successful tailored multifaceted strategy to improve hand hygiene compliance outweighed the savings by reducing infection costs in Dutch long-term care facilities (LTCFs). DESIGN: A retrospective cost analysis alongside a stepped-wedge cluster-randomized controlled trial. SETTING AND PARTICIPANTS: The study included 14 LTCFs (23 wards) in the Netherlands. METHODS: The cost analysis was based on the costs of the intervention vs the savings from avoided infections and associated treatment costs. Infection-related costs of the "usual-care" period were compared with the combined infection-related costs and intervention costs from the "intervention" period and the costs in the "post-intervention period." Multilevel analyses, with a linear model with periods as fixed effects, random effects for cluster LTCFs, and fixed effects for each step, were completed. RESULTS: There are no significant differences in total costs considering the 3 periods. When adjusting for time and clustering, the mean infection-related costs per week per LTCF for all the infections combined were highest during "usual-care" before the hand hygiene intervention was performed, namely 680 euros per week. Assuming the effect of the improvement strategy would be present for 12 months, the costs per week in the "intervention" and "post-intervention" periods were 627 euros (95% CI, 383-871) and 731 euros (95% CI, 508-954), respectively. Assuming the effect of the improvement strategy will last longer than 1 year (ie, 18 and 24 months), the average cost for the "intervention period" and the "post-intervention" period decreased to 615 euros and 719 euros during the intervention and 609 euros and 715 euros after the intervention, respectively. CONCLUSIONS AND IMPLICATIONS: Our multifaceted hand hygiene improvement strategy achieves cost savings. The results of our study are the first of an economic analysis of a hand hygiene improvement strategy in LTCFs. The results need to be confirmed by further economic evaluations.
Assuntos
Higiene das Mãos , Assistência de Longa Duração , Humanos , Países Baixos , Higiene das Mãos/economia , Estudos Retrospectivos , Assistência de Longa Duração/economia , Infecção Hospitalar/prevenção & controle , Infecção Hospitalar/economia , Custos e Análise de Custo , Controle de Infecções/economia , Controle de Infecções/métodos , Casas de Saúde/economia , Feminino , Masculino , Melhoria de Qualidade , IdosoRESUMO
BACKGROUND: Robot-assisted ventral hernia repair is associated with decreased length of stay and lower complication rates compared with open repair, but acquisition and maintenance of the robotic system is costly. The aim of this was study was to compare the procedure-specific cost of robot-assisted and open ventral and incisional hernia repair including cost of procedure-related readmissions and reoperations within 90 days postoperatively. METHODS: Single-center retrospective cohort study of 100 patients undergoing robot-assisted ventral hernia. Patients were propensity-score matched 1:1 with 100 patients undergoing open repairs on age, type of hernia (primary/incisional), and horizontal defect size. The primary outcome of the study was the total cost per procedure in Euros including the cost of a robotic approach, extra ports, mesh, tackers, length of stay, length of readmission, and operative reintervention. The cost of the robot itself was not included in the cost calculation. RESULTS: The mean length of stay was 0.3 days for patients undergoing robot-assisted ventral hernia repair, which was significantly shorter compared with 2.1 days for patients undergoing open repair, P < 0.005. The readmission rate was 4% for patients undergoing robot-assisted ventral hernia repairs and was significantly lower compared with open repairs (17%), P = 0.006. The mean total cost of all robot-assisted ventral and incisional hernia repairs was 1,094 euro compared with 1,483 euro for open repairs, P = 0.123. The total cost of a robot-assisted incisional hernia repair was significantly lower (1,134 euros) compared with open ventral hernia repair (2,169 euros), P = 0.005. CONCLUSIONS: In a Danish cohort of patients with incisional hernia, robot-assisted incisional hernia repair was more cost-effective than an open repair due to shortened length of stay, and lower rates of readmission and reintervention within 90 days.
Assuntos
Hérnia Ventral , Herniorrafia , Tempo de Internação , Readmissão do Paciente , Procedimentos Cirúrgicos Robóticos , Humanos , Hérnia Ventral/cirurgia , Hérnia Ventral/economia , Estudos Retrospectivos , Procedimentos Cirúrgicos Robóticos/economia , Masculino , Feminino , Pessoa de Meia-Idade , Herniorrafia/economia , Herniorrafia/métodos , Tempo de Internação/estatística & dados numéricos , Readmissão do Paciente/estatística & dados numéricos , Readmissão do Paciente/economia , Idoso , Reoperação/economia , Reoperação/estatística & dados numéricos , Hérnia Incisional/cirurgia , Hérnia Incisional/economia , Pontuação de Propensão , Custos e Análise de Custo , Adulto , Telas Cirúrgicas/economia , Complicações Pós-Operatórias/economiaRESUMO
Few studies have examined variability in OR utilization across weekdays. We conducted a retrospective analysis to determine OR utilization differences by day of the week and the source and financial effects of any variability. We extracted 55 months of data from a surgical data repository to calculate OR utilization, late starts, idle times, and delays for each weekday. Declines in OR utilization occurred as the week progressed and were attributed to compounding changes in late start, delay, and idle time. The average weekly cost for each OR associated with unused staffed minutes below a target OR utilization of 85% was $19,383, and the comparable lost weekly revenue was $60,256. Perioperative leaders should identify sources of OR utilization variability when developing strategies that enhance outcomes for patients, minimize costs, and maximize revenue.
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Salas Cirúrgicas , Estudos Retrospectivos , Humanos , Salas Cirúrgicas/economia , Salas Cirúrgicas/estatística & dados numéricos , Fatores de Tempo , Custos e Análise de Custo/estatística & dados numéricosRESUMO
Introduction Few mandatory community-based attachments for postgraduate year two doctors (PGY2s) in Aotearoa New Zealand are hosted in general practices, due to space, time and remuneration barriers. Aim This study aimed to explore the costs, barriers and enablers to general practices of hosting PGY2s. Methods A cost analysis for four general practices beginning to host PGY2s was undertaken, including time spent supervising and supporting PGY2s, revenue impact including subsidies and cost of providing clinical space. Interviews with these practices and seven experienced PGY2 host practices were conducted and analysed thematically. Results The estimated mean cost of hosting PGY2s excluding room cost was NZ$4907 per 13-week placement (range $890-$9183), increasing to $13 727 per placement (range $5750-$24 715) when room rental was included. Four themes were identified: working within a small business model; a new learning environment for PGY2s; providing positive experiences for the PGY2s; the relationship between practices and district hospitals that employed the PGY2s, including job sizing. Discussion Tension exists between the small business model of general practice and providing positive experiences for PGY2s in a new learning environment. Guidance and support structures for PGY2 hosting should be developed nationally, and communication and cooperation between practices and employing hospitals needs improvement. Out-of-hours work should be included in community-based attachments so PGY2s' remuneration is consistent. General practice teams are willing to be part of creating a sustainable workforce. However, the time taken to host and costs of providing training in primary care are barriers. There is urgent need to increase funding to general practices for hosting PGY2s.
Assuntos
Medicina Geral , Nova Zelândia , Humanos , Medicina Geral/organização & administração , Custos e Análise de Custo , Educação de Pós-Graduação em Medicina/economia , Educação de Pós-Graduação em Medicina/organização & administração , Internato e Residência/economia , Internato e Residência/organização & administração , Entrevistas como AssuntoRESUMO
BACKGROUND: The survival of ART restorations can be influenced by the choice of the restorative material. The aim of this randomized non-inferiority controlled trial was to compare the 2-year survival rate and cost analysis of two encapsulated glass ionomer cements (GIC) as occlusoproximal restorative materials in primary molars. METHODS: Children from public schools in Tietê (Brazil), aged 4-8 years with occlusoproximal dentine carious lesions in primary molars were selected and randomly assigned to receive either Equia Forte (EF) or Riva Self Cure (RSC) as restorative materials. Treatment was carried out by two trained final-year dental students in schools following ART premises. Restorations were assessed by a trained and calibrated examiner after 2, 6, 12, 18, and 24 months. The primary outcome was restoration survival after 2 years, analyzed using Kaplan-Meier survival and Cox regression analysis (α = 5%). Professional and materials costs for each group were collected in Brazilian Reais (R$) and converted into US dollars (US$) and analyzed using Monte-Carlo simulation. RESULTS: A total of 152 children (76 per group) were included in the study, and 121 (79%) were evaluated after 2 years. The overall 2-year restoration survival rate was 39% (EF = 45%; RSC = 32%) with no difference between the groups. The baseline and 2-year total cost of restorations using RSC was lower when compared to EF (incremental cost: US$ 6.18). CONCLUSION: After two years of follow-up, Riva Self Cure shows comparable restoration survival rates to Equia Forte, being more cost-effective in the Brazilian perspective. TRIAL REGISTRATION: This randomized clinical trial was registered on ClinicalTrials.Gov - NCT02730000.
Assuntos
Tratamento Dentário Restaurador sem Trauma , Cimentos de Ionômeros de Vidro , Dente Molar , Dente Decíduo , Humanos , Cimentos de Ionômeros de Vidro/uso terapêutico , Cimentos de Ionômeros de Vidro/economia , Pré-Escolar , Masculino , Feminino , Criança , Tratamento Dentário Restaurador sem Trauma/métodos , Tratamento Dentário Restaurador sem Trauma/economia , Falha de Restauração Dentária , Custos e Análise de Custo , Brasil , Cárie Dentária/terapia , Restauração Dentária Permanente/métodos , Restauração Dentária Permanente/economiaRESUMO
The efficiency and responsiveness of supply chains are vitally dependent on inventory replenishment and transportation decisions. In this paper, we study a supply chain consisting of a single retailer ordering seasonal products within the newsvendor framework. The primary objective of the paper is to investigate the retailer's decision-making process, aimed at determining the optimal replenishment quantities and selecting the appropriate mix and size of the truck fleet. Initially, we formulate a mathematical model where the retailer exclusively manages a limited fleet of its own trucks for inbound transportation of a single seasonal product. In this context, we determine a lower breakeven point for the fixed transportation cost than what has been previously proposed in the literature. Subsequently, we examine a commonly encountered transportation scenario where the retailer has the opportunity to expand its fleet size by leasing trucks from the external market. The outcomes of the numerical example indicates that the flexibility resulting from the utilization of different types of trucks can lead to reduced overall costs. We also address the practical transportation problem of efficiently shipping various seasonal products solely with the retailer's own trucks. For this complex problem, we propose an optimal solution procedure based on Lagrangian method. We show that the joint replenishment of multiple products results in cost savings and enhances utilization of the trucks' capacities.
Assuntos
Meios de Transporte , Meios de Transporte/economia , Modelos Teóricos , Comércio/economia , Veículos Automotores/economia , Humanos , Tomada de Decisões , Custos e Análise de CustoRESUMO
Robotic surgery with Da Vinci has revolutionized the treatment of several diseases, including prostate cancer; nevertheless, costs remain the major drawback. Recently, new robotic platforms entered the market aiming to reduce costs and improve the access to robotic surgery. The aim of the study is to compare direct cost for initial hospital stay of radical prostatectomy performed with two different robotic systems, the Da Vinci and the new Hugo RAS system. This is a projection study that applies cost of robotic surgery, derived from a local tender, to the clinical course of robotic radical prostatectomy (RALP) performed with Da Vinci and Hugo RAS. The study was performed in a public referral center for robotic surgery equipped with both systems. The cost of robotic surgery from a local tender were considered and included rent, annual maintenance, and a per-procedure fee covering the setup of four robotic instruments. Those costs were applied to patients who underwent RALP with both systems since November 2022. The primary endpoint is to evaluate direct costs of initial hospital stay for Da Vinci and Hugo RAS, by considering equipment costs (as derived from the tender), and costs of theater and of hospitalization. The direct per-procedure cost is 2,246.31 for a Da Vinci procedure and 1995 for a Hugo RALP. In the local setting, Hugo RAS provides 11% of cost saving for RALP. By applying this per-procedure cost to our clinical data, the expenditure for the entire index hospitalization is 6.7755,1 for Da Vinci and 6.637,15 for Hugo RALP. The new Hugo RAS system is willing to reduce direct expenditures of robotic surgery for RALP; furthermore, it provides similar peri-operative outcomes compared to the Da Vinci. However, other drivers of costs should be taken into account, such as the duration of OR use-that is more than just console time and may depend on the facility's background and organization. Further variations in direct costs of robotic systems are related to caseload, local agreements and negotiations. Thus, cost comparison of new robotic platform still remains an ongoing issue.
Assuntos
Custos e Análise de Custo , Tempo de Internação , Prostatectomia , Neoplasias da Próstata , Procedimentos Cirúrgicos Robóticos , Prostatectomia/economia , Prostatectomia/métodos , Prostatectomia/instrumentação , Procedimentos Cirúrgicos Robóticos/economia , Procedimentos Cirúrgicos Robóticos/métodos , Procedimentos Cirúrgicos Robóticos/instrumentação , Humanos , Masculino , Tempo de Internação/economia , Neoplasias da Próstata/cirurgia , Neoplasias da Próstata/economiaRESUMO
OBJECTIVE: To evaluate the impact of the entry of biosimilars on the pricing of eight biologic products in 57 countries and regions. METHODS: We utilized an interrupted time series design and IQVIA MIDAS® data to analyze the annual sales data of eight biologic products (adalimumab, bevacizumab, epoetin, etanercept, filgrastim, infliximab, pegfilgrastim, and trastuzumab) across 57 countries and regions from January 1, 2012, to December 31, 2019. We examined the immediate and long-term changes in biologics ex-manufacturer pricing following the entry of biosimilars to the market. RESULTS: Following the entry of biosimilars, the average price per dose of biologic product was immediately reduced by $438 for trastuzumab, $112 for infliximab, and $110 for bevacizumab. The persistent effect of biosimilars' market entry led to further reductions in price per dose every year: by $49 for adalimumab, $290 for filgrastim, $21 for infliximab, and $189 for trastuzumab. Similarly, we analyzed the impact of biosimilars on four biologics' prices in the US, where the prices of three biologics significantly decreased every year, with filgrastim, pegfilgrastim, and infliximab decreasing by $955, $753, and $104, respectively. CONCLUSIONS: The introduction of biosimilars has significantly reduced the prices of biologics both globally and in the US. These findings not only demonstrate the economic benefits of increasing biosimilar utilization, but also emphasize the importance of biosimilars in controlling healthcare costs. Policies should aim to expand the availability of biosimilars to counteract the exponential growth of medical spending caused by the use of biologics.
Assuntos
Medicamentos Biossimilares , Infliximab , Medicamentos Biossimilares/economia , Medicamentos Biossimilares/uso terapêutico , Humanos , Infliximab/economia , Infliximab/uso terapêutico , Filgrastim/economia , Filgrastim/uso terapêutico , Produtos Biológicos/economia , Produtos Biológicos/uso terapêutico , Custos de Medicamentos , Adalimumab/economia , Adalimumab/uso terapêutico , Etanercepte/economia , Etanercepte/uso terapêutico , Trastuzumab/economia , Trastuzumab/uso terapêutico , Custos e Análise de Custo , PolietilenoglicóisRESUMO
AIMS: Alcohol pricing policies may reduce alcohol-related harms, yet little work has been done to model their effectiveness beyond health outcomes especially in Australia. We aim to estimate the impacts of four taxation and minimum unit pricing (MUP) interventions on selected social harms across sex and age subgroups in Australia. METHODS: We used econometrics and epidemiologic simulations using demand elasticity and risk measures. We modelled four policies including (A) uniform excise rates (UER) (based on alcohol units) (B) MUP $1.30 on all alcoholic beverages (C) UER + 10 % (D) MUP$ 1.50. People who consumed alcohol were classified as (a) moderate (≤ 14 Australian standard drinks (SDs) per week) (b) Hazardous (15-42 SDs per week for men and 14-35 ASDs for women) and (c) Harmful (> 42 SDs per week for men and > 35 ASDs for women). Outcomes were sickness absence, sickness presenteeism, unemployment, antisocial behaviours, and police-reported crimes. We used relative risk functions from meta-analysis, cohort study, cross-sectional survey, or attributable fractions from routine criminal records. We applied the potential impact fraction to estimate the reduction in social harms by age group and sex after implementation of pricing policies. RESULTS: All four modelled pricing policies resulted in a decrease in the overall mean baseline of current alcohol consumption, primarily due to fewer people drinking harmful amounts. These policies also reduced the total number of crimes and workplace harms compared to the current taxation system. These reductions were consistent across all age and sex subgroups. Specifically, sickness absence decreased by 0.2-0.4 %, alcohol-related sickness presenteeism by 7-9 %, unemployment by 0.5-0.7 %, alcohol-related antisocial behaviours by 7.3-11.1 %, and crimes by 4-6 %. Of all the policies, the implementation of a $1.50 MUP resulted in the largest reductions across most outcome measures. CONCLUSION: Our results highlight that alcohol pricing policies can address the burden of social harms in Australia. However, pricing policies should just form part of a comprehensive alcohol policy approach along with other proven policy measures such as bans on aggressive marketing of alcoholic products and enforcing the restrictions on the availability of alcohol through outlet density regulation or reduced hours of sale to have a more impact on social harms.
Assuntos
Consumo de Bebidas Alcoólicas , Bebidas Alcoólicas , Impostos , Humanos , Masculino , Feminino , Bebidas Alcoólicas/economia , Austrália , Adulto , Consumo de Bebidas Alcoólicas/economia , Consumo de Bebidas Alcoólicas/epidemiologia , Consumo de Bebidas Alcoólicas/prevenção & controle , Pessoa de Meia-Idade , Adulto Jovem , Adolescente , Comércio/estatística & dados numéricos , Comércio/legislação & jurisprudência , Comércio/economia , Crime/economia , Crime/prevenção & controle , Idoso , Modelos Econométricos , Custos e Análise de Custo , Fatores Etários , Redução do Dano , Fatores SexuaisAssuntos
Vértebras Lombares , Procedimentos Cirúrgicos Robóticos , Fusão Vertebral , Humanos , Fusão Vertebral/economia , Fusão Vertebral/métodos , Fusão Vertebral/instrumentação , Vértebras Lombares/cirurgia , Procedimentos Cirúrgicos Robóticos/economia , Procedimentos Cirúrgicos Robóticos/métodos , Custos e Análise de Custo , Neuronavegação/economia , Neuronavegação/métodosAssuntos
Vértebras Lombares , Fusão Vertebral , Humanos , Fusão Vertebral/economia , Fusão Vertebral/métodos , Fusão Vertebral/instrumentação , Vértebras Lombares/cirurgia , Procedimentos Cirúrgicos Robóticos/economia , Procedimentos Cirúrgicos Robóticos/métodos , Custos e Análise de Custo , Robótica/economia , Neuronavegação/economia , Neuronavegação/métodosRESUMO
Clean water is an integral part of industries, agricultural activities and human life, but water contamination by toxic dyes, heavy metals, and oil spills is increasingly serious in the world. Aerogels with unique properties such as highly porous and extremely low density, tunable surface modification, excellent reusability, and thermal stability can contribute to addressing these issues. Thanks to high purity, biocompatibility and biodegradability, bacterial cellulose can be an ideal precursor source to produce aerogels. Here, we review the modification, regeneration, and applications of bacterial cellulose-based aerogels for water treatment. The modification of bacterial cellulose-based aerogels undergoes coating of hydrophobic agents, carbonization, and incorporation with other materials, e.g., ZIF-67, graphene oxide, nanoparticles, polyaniline. We emphasized features of modified aerogels on porosity, hydrophobicity, density, surface chemistry, and regeneration. Although major limits are relevant to the use of toxic coating agents, difficulty in bacterial culture, and production cost, the bacterial cellulose aerogels can obtain high performance for water treatment, particularly, catastrophic oil spills.
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Bactérias , Celulose , Géis , Purificação da Água , Celulose/química , Purificação da Água/métodos , Géis/química , Custos e Análise de Custo , Poluentes Químicos da Água/química , Porosidade , Biodegradação Ambiental , Interações Hidrofóbicas e HidrofílicasAssuntos
Sepse , Humanos , Sepse/diagnóstico , Metagenômica/métodos , Adulto , Custos e Análise de Custo , Masculino , Feminino , Pessoa de Meia-IdadeRESUMO
Despite significant capital and operating costs, mechanical vapor compression (MVC) remains the preferred technology for challenging brine concentration applications. This work seeks to assess the dependence of MVC costs on feedwater salinity and desired water recovery and to quantify the value of improved component performance or reduced component costs for reducing the levelized cost of water (LCOW) of MVC. We built a cost optimization model coupling thermophysical, heat and mass transfer, and technoeconomic models to optimize and identify low cost MVC system designs as a function of feedwater salinity and water recovery. The LCOW ranges over 3.6 to 6.1 $/m3 for seawater feed salinities of 25-150 g/kg and water recoveries of 40-80 %. We then perform sensitivity analysis on parameter inputs to isolate irreducible costs and determine high value component innovation targets. The LCOW was most sensitive to evaporator material costs and performance, including the overall heat transfer coefficient in the evaporator. Process and material innovations such as polymer-composite evaporator tubes that reduce evaporator costs by 25 % without reducing heat transfer performance by more than 10 % would result in MVC cost reductions of 8 %.
Assuntos
Salinidade , Modelos Teóricos , Sais , Água do Mar , Custos e Análise de CustoRESUMO
INTRODUCTION: Office administration of intradetrusor onabotulinumtoxinA is commonly used to treat overactive bladder. For preprocedure analgesia, either 50 mL 2% intravesical lidocaine instillation for 20 to 30 minutes or 200 mg oral phenazopyridine can be used. Phenazopyridine is associated with shorter appointment times and is noninferior to lidocaine for pain control in this setting. We performed a cost analysis of phenazopyridine vs lidocaine for analgesia before office intradetrusor onabotulinumtoxinA injection for the treatment of idiopathic overactive bladder. METHODS: A health care sector-perspective cost analysis was performed. The following assumptions were made: (1) similar efficacy of each medication in providing adequate analgesia, (2) similar physician ease of performing the procedure with either analgesic, and (3) similar patient satisfaction with either analgesic. Average cost of medications, adverse reactions, nursing tasks, and office visit time were found in publicly available data. Sensitivity analyses were performed using TreeAge Pro 2021, R1 software. RESULTS: Phenazopyridine is less costly compared to lidocaine per visit for office intradetrusor onabotulinumtoxinA injection ($827 vs $925). A difference of $98 per procedure provides a total annual cost savings of over $24 million if all procedures are performed with phenazopyridine instead of lidocaine. Sensitivity analysis showed that phenazopyridine remained less costly under most circumstances, and threshold analysis provided exact circumstances under which phenazopyridine is no longer cost saving. CONCLUSIONS: Phenazopyridine provides cost savings compared to lidocaine for analgesia before office intradetrusor onabotulinumtoxinA injection for the treatment of idiopathic overactive bladder. If adopted by providers nationwide, phenazopyridine may reduce health care spending and minimize office visit time while maintaining patient pain control and satisfaction.
Assuntos
Anestésicos Locais , Toxinas Botulínicas Tipo A , Lidocaína , Fenazopiridina , Humanos , Toxinas Botulínicas Tipo A/administração & dosagem , Toxinas Botulínicas Tipo A/economia , Toxinas Botulínicas Tipo A/uso terapêutico , Lidocaína/administração & dosagem , Lidocaína/economia , Lidocaína/uso terapêutico , Fenazopiridina/administração & dosagem , Fenazopiridina/economia , Fenazopiridina/uso terapêutico , Administração Intravesical , Anestésicos Locais/administração & dosagem , Anestésicos Locais/economia , Anestésicos Locais/uso terapêutico , Bexiga Urinária Hiperativa/tratamento farmacológico , Bexiga Urinária Hiperativa/economia , Administração Oral , Custos e Análise de Custo , Manejo da Dor/economia , Manejo da Dor/métodos , Cuidados Pré-Operatórios/métodos , Cuidados Pré-Operatórios/economiaRESUMO
BACKGROUND: Supermarket interventions are promising to promote healthier dietary patterns, but not all individuals may be equally susceptible. We explored whether the effectiveness of nudging and pricing strategies on diet quality differs by psychological and grocery shopping characteristics. METHODS: We used data of the 12-month Supreme Nudge parallel cluster-randomised controlled supermarket trial, testing nudging and pricing strategies to promote healthier diets. Participants were Dutch speaking adults aged 30-80 years and regular shoppers of participating supermarkets (n = 12) in socially disadvantaged neighbourhoods. Data on psychological characteristics (food-related behaviours; price sensitivity; food decision styles; social cognitive factors; self-control) and grocery shopping characteristics (time spent in the supermarket; moment of the day; average supermarket visits; shopping at other retailers; supermarket proximity) were self-reported at baseline. These characteristics were tested for their moderating effects of the intervention on diet quality (scored 0-150) in linear mixed models. RESULTS: We included 162 participants from intervention supermarkets and 199 from control supermarkets (73% female, 58 (± 10.8) years old, 42% highly educated). The interventions had no overall effect on diet quality. Only five out of 23 potential moderators were statistically significant. Yet, stratified analyses of these significant moderators showed no significant effects on diet quality for one of the subgroups and statistically non-significant negative effects for the other. Negative effects were suggested for individuals with lower baseline levels of meal planning (ß - 2.6, 95% CI - 5.9; 0.8), healthy shopping convenience (ß - 3.0, 95% CI - 7.2; 1.3), and healthy food attractiveness (ß - 3.5, 95% CI - 8.3; 1.3), and with higher levels of price consciousness (ß - 2.6, 95% CI - 6.2; 1.0) and weekly supermarket visits (ß - 2.4, 95% CI - 6.8; 1.9). CONCLUSIONS: Adults with varying psychological and grocery shopping characteristics largely seem equally (un)susceptible to nudging and pricing strategies. It might be that certain characteristics lead to adverse effects, but this is not plausible, and the observed negative effects were small and statistically non-significant and may be explained by chance findings. Verification of these findings is needed in real-world trials based on larger sample sizes and with the use of more comprehensive interventions. TRIAL REGISTRATION: Dutch Trial Register ID NL7064, 30th of May, 2018, https://onderzoekmetmensen.nl/en/trial/20990.
Assuntos
Supermercados , Humanos , Feminino , Masculino , Pessoa de Meia-Idade , Adulto , Idoso , Países Baixos , Idoso de 80 Anos ou mais , Comércio , Promoção da Saúde/métodos , Dieta Saudável/economia , Custos e Análise de CustoRESUMO
BACKGROUND: The organisational care needs involved in accessing kidney transplant have not been described in the literature and therefore a detailed analysis thereof could help to establish a framework (including appropriate timing, investment, and costs) for the management of this population. The main objective of this study is to analyse the profile and care needs of kidney transplant candidates in a tertiary hospital and the direct costs of studying them. METHODS: A descriptive, cross-sectional study was conducted using data on a range of variables (sociodemographic and clinical characteristics, study duration, and investment in visits and supplementary tests) from 489 kidney transplant candidates evaluated in 2020. RESULTS: The comorbidity index was high (> 4 in 64.3%), with a mean of 5.6 ± 2.4. Part of the study population had certain characteristics that could hinder their access a kidney transplant: physical dependence (9.4%), emotional distress (33.5%), non-adherent behaviours (25.2%), or language barriers (9.4%). The median study duration was 6.6[3.4;14] months. The ratio of required visits to patients was 5.97:1, meaning an investment of 237.10 per patient, and the ratio of supplementary tests to patients was 3.5:1, meaning an investment of 402.96 per patient. CONCLUSIONS: The study population can be characterised as complex due to their profile and their investment in terms of time, visits, supplementary tests, and direct costs. Management based on our results involves designing work-adaptation strategies to the needs of the study population, which can lead to increased patient satisfaction, shorter waiting times, and reduced costs.